2018-11-01 19:13:19 +00:00
|
|
|
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
|
|
|
|
/* erasure coding */
|
|
|
|
|
|
|
|
#include "bcachefs.h"
|
|
|
|
#include "alloc_foreground.h"
|
2022-10-09 04:29:51 +00:00
|
|
|
#include "backpointers.h"
|
2020-12-17 20:08:58 +00:00
|
|
|
#include "bkey_buf.h"
|
2018-11-01 19:13:19 +00:00
|
|
|
#include "bset.h"
|
|
|
|
#include "btree_gc.h"
|
|
|
|
#include "btree_update.h"
|
2022-10-09 04:29:51 +00:00
|
|
|
#include "btree_write_buffer.h"
|
2018-11-01 19:13:19 +00:00
|
|
|
#include "buckets.h"
|
|
|
|
#include "disk_groups.h"
|
|
|
|
#include "ec.h"
|
|
|
|
#include "error.h"
|
|
|
|
#include "io.h"
|
|
|
|
#include "keylist.h"
|
2019-04-12 02:39:39 +00:00
|
|
|
#include "recovery.h"
|
2021-11-29 21:38:27 +00:00
|
|
|
#include "replicas.h"
|
2018-11-01 19:13:19 +00:00
|
|
|
#include "super-io.h"
|
|
|
|
#include "util.h"
|
|
|
|
|
2018-11-23 07:06:18 +00:00
|
|
|
#include <linux/sort.h>
|
|
|
|
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
#include <linux/raid/pq.h>
|
|
|
|
#include <linux/raid/xor.h>
|
2018-11-23 07:06:18 +00:00
|
|
|
|
|
|
|
static void raid5_recov(unsigned disks, unsigned failed_idx,
|
|
|
|
size_t size, void **data)
|
|
|
|
{
|
|
|
|
unsigned i = 2, nr;
|
|
|
|
|
|
|
|
BUG_ON(failed_idx >= disks);
|
|
|
|
|
|
|
|
swap(data[0], data[failed_idx]);
|
|
|
|
memcpy(data[0], data[1], size);
|
|
|
|
|
|
|
|
while (i < disks) {
|
|
|
|
nr = min_t(unsigned, disks - i, MAX_XOR_BLOCKS);
|
|
|
|
xor_blocks(nr, size, data[0], data + i);
|
|
|
|
i += nr;
|
|
|
|
}
|
|
|
|
|
|
|
|
swap(data[0], data[failed_idx]);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void raid_gen(int nd, int np, size_t size, void **v)
|
|
|
|
{
|
|
|
|
if (np >= 1)
|
|
|
|
raid5_recov(nd + np, nd, size, v);
|
|
|
|
if (np >= 2)
|
|
|
|
raid6_call.gen_syndrome(nd + np, size, v);
|
|
|
|
BUG_ON(np > 2);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void raid_rec(int nr, int *ir, int nd, int np, size_t size, void **v)
|
|
|
|
{
|
|
|
|
switch (nr) {
|
|
|
|
case 0:
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
if (ir[0] < nd + 1)
|
|
|
|
raid5_recov(nd + 1, ir[0], size, v);
|
|
|
|
else
|
|
|
|
raid6_call.gen_syndrome(nd + np, size, v);
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
if (ir[1] < nd) {
|
|
|
|
/* data+data failure. */
|
|
|
|
raid6_2data_recov(nd + np, size, ir[0], ir[1], v);
|
|
|
|
} else if (ir[0] < nd) {
|
|
|
|
/* data + p/q failure */
|
|
|
|
|
|
|
|
if (ir[1] == nd) /* data + p failure */
|
|
|
|
raid6_datap_recov(nd + np, size, ir[0], v);
|
|
|
|
else { /* data + q failure */
|
|
|
|
raid5_recov(nd + 1, ir[0], size, v);
|
|
|
|
raid6_call.gen_syndrome(nd + np, size, v);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
raid_gen(nd, np, size, v);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
#include <raid/raid.h>
|
|
|
|
|
|
|
|
#endif
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
struct ec_bio {
|
|
|
|
struct bch_dev *ca;
|
|
|
|
struct ec_stripe_buf *buf;
|
|
|
|
size_t idx;
|
|
|
|
struct bio bio;
|
|
|
|
};
|
|
|
|
|
|
|
|
/* Stripes btree keys: */
|
|
|
|
|
2022-04-03 21:50:01 +00:00
|
|
|
int bch2_stripe_invalid(const struct bch_fs *c, struct bkey_s_c k,
|
2022-04-04 01:50:25 +00:00
|
|
|
int rw, struct printbuf *err)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
2018-11-01 19:10:01 +00:00
|
|
|
const struct bch_stripe *s = bkey_s_c_to_stripe(k).v;
|
|
|
|
|
2022-11-24 08:12:22 +00:00
|
|
|
if (bkey_eq(k.k->p, POS_MIN)) {
|
2023-02-04 02:01:40 +00:00
|
|
|
prt_printf(err, "stripe at POS_MIN");
|
2022-11-20 03:39:08 +00:00
|
|
|
return -BCH_ERR_invalid_bkey;
|
2022-04-03 21:50:01 +00:00
|
|
|
}
|
2021-01-22 23:01:07 +00:00
|
|
|
|
2022-04-03 21:50:01 +00:00
|
|
|
if (k.k->p.inode) {
|
2023-02-04 02:01:40 +00:00
|
|
|
prt_printf(err, "nonzero inode field");
|
2022-11-20 03:39:08 +00:00
|
|
|
return -BCH_ERR_invalid_bkey;
|
2022-04-03 21:50:01 +00:00
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2022-04-03 21:50:01 +00:00
|
|
|
if (bkey_val_bytes(k.k) < sizeof(*s)) {
|
2023-02-04 02:01:40 +00:00
|
|
|
prt_printf(err, "incorrect value size (%zu < %zu)",
|
2022-04-03 21:50:01 +00:00
|
|
|
bkey_val_bytes(k.k), sizeof(*s));
|
2022-11-20 03:39:08 +00:00
|
|
|
return -BCH_ERR_invalid_bkey;
|
2022-04-03 21:50:01 +00:00
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2022-04-03 21:50:01 +00:00
|
|
|
if (bkey_val_u64s(k.k) < stripe_val_u64s(s)) {
|
2023-02-04 02:01:40 +00:00
|
|
|
prt_printf(err, "incorrect value size (%zu < %u)",
|
2022-04-03 21:50:01 +00:00
|
|
|
bkey_val_u64s(k.k), stripe_val_u64s(s));
|
2022-11-20 03:39:08 +00:00
|
|
|
return -BCH_ERR_invalid_bkey;
|
2022-04-03 21:50:01 +00:00
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2022-04-04 01:50:25 +00:00
|
|
|
return bch2_bkey_ptrs_invalid(c, k, rw, err);
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
2018-11-01 19:10:01 +00:00
|
|
|
void bch2_stripe_to_text(struct printbuf *out, struct bch_fs *c,
|
2018-11-01 19:13:19 +00:00
|
|
|
struct bkey_s_c k)
|
|
|
|
{
|
2018-11-01 19:10:01 +00:00
|
|
|
const struct bch_stripe *s = bkey_s_c_to_stripe(k).v;
|
|
|
|
unsigned i;
|
|
|
|
|
2023-02-04 02:01:40 +00:00
|
|
|
prt_printf(out, "algo %u sectors %u blocks %u:%u csum %u gran %u",
|
2018-11-01 19:10:01 +00:00
|
|
|
s->algorithm,
|
|
|
|
le16_to_cpu(s->sectors),
|
|
|
|
s->nr_blocks - s->nr_redundant,
|
|
|
|
s->nr_redundant,
|
|
|
|
s->csum_type,
|
|
|
|
1U << s->csum_granularity_bits);
|
|
|
|
|
|
|
|
for (i = 0; i < s->nr_blocks; i++)
|
2023-02-04 02:01:40 +00:00
|
|
|
prt_printf(out, " %u:%llu:%u", s->ptrs[i].dev,
|
2018-11-26 01:53:51 +00:00
|
|
|
(u64) s->ptrs[i].offset,
|
|
|
|
stripe_blockcount_get(s, i));
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
/* returns blocknr in stripe that we matched: */
|
2021-12-09 19:19:18 +00:00
|
|
|
static const struct bch_extent_ptr *bkey_matches_stripe(struct bch_stripe *s,
|
|
|
|
struct bkey_s_c k, unsigned *block)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
2021-01-11 18:51:23 +00:00
|
|
|
struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
|
|
|
|
const struct bch_extent_ptr *ptr;
|
|
|
|
unsigned i, nr_data = s->nr_blocks - s->nr_redundant;
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
bkey_for_each_ptr(ptrs, ptr)
|
|
|
|
for (i = 0; i < nr_data; i++)
|
2021-03-12 21:55:28 +00:00
|
|
|
if (__bch2_ptr_matches_stripe(&s->ptrs[i], ptr,
|
2021-12-09 19:19:18 +00:00
|
|
|
le16_to_cpu(s->sectors))) {
|
|
|
|
*block = i;
|
|
|
|
return ptr;
|
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-12-09 19:19:18 +00:00
|
|
|
return NULL;
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
2019-05-13 04:30:02 +00:00
|
|
|
static bool extent_has_stripe_ptr(struct bkey_s_c k, u64 idx)
|
|
|
|
{
|
2019-07-25 17:52:14 +00:00
|
|
|
switch (k.k->type) {
|
|
|
|
case KEY_TYPE_extent: {
|
|
|
|
struct bkey_s_c_extent e = bkey_s_c_to_extent(k);
|
|
|
|
const union bch_extent_entry *entry;
|
2019-05-13 04:30:02 +00:00
|
|
|
|
2019-07-25 17:52:14 +00:00
|
|
|
extent_for_each_entry(e, entry)
|
|
|
|
if (extent_entry_type(entry) ==
|
|
|
|
BCH_EXTENT_ENTRY_stripe_ptr &&
|
|
|
|
entry->stripe_ptr.idx == idx)
|
|
|
|
return true;
|
2019-05-13 04:30:02 +00:00
|
|
|
|
2019-07-25 17:52:14 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2019-05-13 04:30:02 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2020-12-15 00:41:03 +00:00
|
|
|
/* Stripe bufs: */
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
static void ec_stripe_buf_exit(struct ec_stripe_buf *buf)
|
2020-12-15 00:41:03 +00:00
|
|
|
{
|
|
|
|
unsigned i;
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
for (i = 0; i < buf->key.v.nr_blocks; i++) {
|
|
|
|
kvpfree(buf->data[i], buf->size << 9);
|
|
|
|
buf->data[i] = NULL;
|
2020-12-15 00:41:03 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
static int ec_stripe_buf_init(struct ec_stripe_buf *buf,
|
|
|
|
unsigned offset, unsigned size)
|
2020-12-15 00:41:03 +00:00
|
|
|
{
|
2021-01-11 18:51:23 +00:00
|
|
|
struct bch_stripe *v = &buf->key.v;
|
|
|
|
unsigned csum_granularity = 1U << v->csum_granularity_bits;
|
|
|
|
unsigned end = offset + size;
|
2020-12-15 00:41:03 +00:00
|
|
|
unsigned i;
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
BUG_ON(end > le16_to_cpu(v->sectors));
|
|
|
|
|
|
|
|
offset = round_down(offset, csum_granularity);
|
|
|
|
end = min_t(unsigned, le16_to_cpu(v->sectors),
|
|
|
|
round_up(end, csum_granularity));
|
2020-12-15 00:41:03 +00:00
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
buf->offset = offset;
|
|
|
|
buf->size = end - offset;
|
|
|
|
|
|
|
|
memset(buf->valid, 0xFF, sizeof(buf->valid));
|
|
|
|
|
|
|
|
for (i = 0; i < buf->key.v.nr_blocks; i++) {
|
|
|
|
buf->data[i] = kvpmalloc(buf->size << 9, GFP_KERNEL);
|
|
|
|
if (!buf->data[i])
|
2020-12-15 00:41:03 +00:00
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
err:
|
2021-01-11 18:51:23 +00:00
|
|
|
ec_stripe_buf_exit(buf);
|
2020-12-15 00:41:03 +00:00
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
/* Checksumming: */
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
static struct bch_csum ec_block_checksum(struct ec_stripe_buf *buf,
|
|
|
|
unsigned block, unsigned offset)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
|
|
|
struct bch_stripe *v = &buf->key.v;
|
|
|
|
unsigned csum_granularity = 1 << v->csum_granularity_bits;
|
2021-01-11 18:51:23 +00:00
|
|
|
unsigned end = buf->offset + buf->size;
|
|
|
|
unsigned len = min(csum_granularity, end - offset);
|
|
|
|
|
|
|
|
BUG_ON(offset >= end);
|
|
|
|
BUG_ON(offset < buf->offset);
|
|
|
|
BUG_ON(offset & (csum_granularity - 1));
|
|
|
|
BUG_ON(offset + len != le16_to_cpu(v->sectors) &&
|
|
|
|
(len & (csum_granularity - 1)));
|
|
|
|
|
|
|
|
return bch2_checksum(NULL, v->csum_type,
|
|
|
|
null_nonce(),
|
|
|
|
buf->data[block] + ((offset - buf->offset) << 9),
|
|
|
|
len << 9);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ec_generate_checksums(struct ec_stripe_buf *buf)
|
|
|
|
{
|
|
|
|
struct bch_stripe *v = &buf->key.v;
|
|
|
|
unsigned i, j, csums_per_device = stripe_csums_per_device(v);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
if (!v->csum_type)
|
2018-11-01 19:13:19 +00:00
|
|
|
return;
|
|
|
|
|
|
|
|
BUG_ON(buf->offset);
|
|
|
|
BUG_ON(buf->size != le16_to_cpu(v->sectors));
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
for (i = 0; i < v->nr_blocks; i++)
|
|
|
|
for (j = 0; j < csums_per_device; j++)
|
|
|
|
stripe_csum_set(v, i, j,
|
|
|
|
ec_block_checksum(buf, i, j << v->csum_granularity_bits));
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void ec_validate_checksums(struct bch_fs *c, struct ec_stripe_buf *buf)
|
|
|
|
{
|
|
|
|
struct bch_stripe *v = &buf->key.v;
|
|
|
|
unsigned csum_granularity = 1 << v->csum_granularity_bits;
|
|
|
|
unsigned i;
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
if (!v->csum_type)
|
2018-11-01 19:13:19 +00:00
|
|
|
return;
|
|
|
|
|
|
|
|
for (i = 0; i < v->nr_blocks; i++) {
|
|
|
|
unsigned offset = buf->offset;
|
|
|
|
unsigned end = buf->offset + buf->size;
|
|
|
|
|
|
|
|
if (!test_bit(i, buf->valid))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
while (offset < end) {
|
|
|
|
unsigned j = offset >> v->csum_granularity_bits;
|
|
|
|
unsigned len = min(csum_granularity, end - offset);
|
2021-01-11 18:51:23 +00:00
|
|
|
struct bch_csum want = stripe_csum_get(v, i, j);
|
|
|
|
struct bch_csum got = ec_block_checksum(buf, i, offset);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
if (bch2_crc_cmp(want, got)) {
|
2022-02-25 18:18:19 +00:00
|
|
|
struct printbuf buf2 = PRINTBUF;
|
2021-01-22 23:01:07 +00:00
|
|
|
|
2022-02-25 18:18:19 +00:00
|
|
|
bch2_bkey_val_to_text(&buf2, c, bkey_i_to_s_c(&buf->key.k_i));
|
2021-01-22 23:01:07 +00:00
|
|
|
|
2020-12-03 18:57:22 +00:00
|
|
|
bch_err_ratelimited(c,
|
2021-01-22 23:01:07 +00:00
|
|
|
"stripe checksum error for %ps at %u:%u: csum type %u, expected %llx got %llx\n%s",
|
|
|
|
(void *) _RET_IP_, i, j, v->csum_type,
|
2022-02-25 18:18:19 +00:00
|
|
|
want.lo, got.lo, buf2.buf);
|
|
|
|
printbuf_exit(&buf2);
|
2018-11-01 19:13:19 +00:00
|
|
|
clear_bit(i, buf->valid);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
offset += len;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Erasure coding: */
|
|
|
|
|
|
|
|
static void ec_generate_ec(struct ec_stripe_buf *buf)
|
|
|
|
{
|
|
|
|
struct bch_stripe *v = &buf->key.v;
|
|
|
|
unsigned nr_data = v->nr_blocks - v->nr_redundant;
|
|
|
|
unsigned bytes = le16_to_cpu(v->sectors) << 9;
|
|
|
|
|
2018-11-23 07:06:18 +00:00
|
|
|
raid_gen(nr_data, v->nr_redundant, bytes, buf->data);
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static unsigned ec_nr_failed(struct ec_stripe_buf *buf)
|
|
|
|
{
|
2020-12-15 00:41:03 +00:00
|
|
|
return buf->key.v.nr_blocks -
|
|
|
|
bitmap_weight(buf->valid, buf->key.v.nr_blocks);
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int ec_do_recov(struct bch_fs *c, struct ec_stripe_buf *buf)
|
|
|
|
{
|
|
|
|
struct bch_stripe *v = &buf->key.v;
|
2020-12-16 19:23:27 +00:00
|
|
|
unsigned i, failed[BCH_BKEY_PTRS_MAX], nr_failed = 0;
|
2018-11-01 19:13:19 +00:00
|
|
|
unsigned nr_data = v->nr_blocks - v->nr_redundant;
|
|
|
|
unsigned bytes = buf->size << 9;
|
|
|
|
|
|
|
|
if (ec_nr_failed(buf) > v->nr_redundant) {
|
2020-12-03 18:57:22 +00:00
|
|
|
bch_err_ratelimited(c,
|
2018-11-01 19:13:19 +00:00
|
|
|
"error doing reconstruct read: unable to read enough blocks");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < nr_data; i++)
|
|
|
|
if (!test_bit(i, buf->valid))
|
|
|
|
failed[nr_failed++] = i;
|
|
|
|
|
2018-11-23 07:06:18 +00:00
|
|
|
raid_rec(nr_failed, failed, nr_data, v->nr_redundant, bytes, buf->data);
|
2018-11-01 19:13:19 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* IO: */
|
|
|
|
|
|
|
|
static void ec_block_endio(struct bio *bio)
|
|
|
|
{
|
|
|
|
struct ec_bio *ec_bio = container_of(bio, struct ec_bio, bio);
|
2021-01-22 23:01:07 +00:00
|
|
|
struct bch_stripe *v = &ec_bio->buf->key.v;
|
|
|
|
struct bch_extent_ptr *ptr = &v->ptrs[ec_bio->idx];
|
2018-11-01 19:13:19 +00:00
|
|
|
struct bch_dev *ca = ec_bio->ca;
|
|
|
|
struct closure *cl = bio->bi_private;
|
|
|
|
|
2020-12-03 18:57:22 +00:00
|
|
|
if (bch2_dev_io_err_on(bio->bi_status, ca, "erasure coding %s error: %s",
|
2020-07-02 17:43:58 +00:00
|
|
|
bio_data_dir(bio) ? "write" : "read",
|
2020-07-21 17:34:22 +00:00
|
|
|
bch2_blk_status_to_str(bio->bi_status)))
|
2018-11-01 19:13:19 +00:00
|
|
|
clear_bit(ec_bio->idx, ec_bio->buf->valid);
|
|
|
|
|
2021-01-22 23:01:07 +00:00
|
|
|
if (ptr_stale(ca, ptr)) {
|
|
|
|
bch_err_ratelimited(ca->fs,
|
|
|
|
"error %s stripe: stale pointer after io",
|
|
|
|
bio_data_dir(bio) == READ ? "reading from" : "writing to");
|
|
|
|
clear_bit(ec_bio->idx, ec_bio->buf->valid);
|
|
|
|
}
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
bio_put(&ec_bio->bio);
|
|
|
|
percpu_ref_put(&ca->io_ref);
|
|
|
|
closure_put(cl);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ec_block_io(struct bch_fs *c, struct ec_stripe_buf *buf,
|
|
|
|
unsigned rw, unsigned idx, struct closure *cl)
|
|
|
|
{
|
|
|
|
struct bch_stripe *v = &buf->key.v;
|
|
|
|
unsigned offset = 0, bytes = buf->size << 9;
|
|
|
|
struct bch_extent_ptr *ptr = &v->ptrs[idx];
|
|
|
|
struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev);
|
2020-07-09 22:31:51 +00:00
|
|
|
enum bch_data_type data_type = idx < buf->key.v.nr_blocks - buf->key.v.nr_redundant
|
|
|
|
? BCH_DATA_user
|
|
|
|
: BCH_DATA_parity;
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
if (ptr_stale(ca, ptr)) {
|
|
|
|
bch_err_ratelimited(c,
|
|
|
|
"error %s stripe: stale pointer",
|
|
|
|
rw == READ ? "reading from" : "writing to");
|
|
|
|
clear_bit(idx, buf->valid);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
if (!bch2_dev_get_ioref(ca, rw)) {
|
|
|
|
clear_bit(idx, buf->valid);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2020-07-09 22:31:51 +00:00
|
|
|
this_cpu_add(ca->io_done->sectors[rw][data_type], buf->size);
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
while (offset < bytes) {
|
|
|
|
unsigned nr_iovecs = min_t(size_t, BIO_MAX_VECS,
|
|
|
|
DIV_ROUND_UP(bytes, PAGE_SIZE));
|
|
|
|
unsigned b = min_t(size_t, bytes - offset,
|
|
|
|
nr_iovecs << PAGE_SHIFT);
|
|
|
|
struct ec_bio *ec_bio;
|
|
|
|
|
|
|
|
ec_bio = container_of(bio_alloc_bioset(ca->disk_sb.bdev,
|
|
|
|
nr_iovecs,
|
|
|
|
rw,
|
|
|
|
GFP_KERNEL,
|
|
|
|
&c->ec_bioset),
|
|
|
|
struct ec_bio, bio);
|
|
|
|
|
|
|
|
ec_bio->ca = ca;
|
|
|
|
ec_bio->buf = buf;
|
|
|
|
ec_bio->idx = idx;
|
|
|
|
|
|
|
|
ec_bio->bio.bi_iter.bi_sector = ptr->offset + buf->offset + (offset >> 9);
|
|
|
|
ec_bio->bio.bi_end_io = ec_block_endio;
|
|
|
|
ec_bio->bio.bi_private = cl;
|
|
|
|
|
2019-07-03 23:27:42 +00:00
|
|
|
bch2_bio_map(&ec_bio->bio, buf->data[idx] + offset, b);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
closure_get(cl);
|
|
|
|
percpu_ref_get(&ca->io_ref);
|
|
|
|
|
|
|
|
submit_bio(&ec_bio->bio);
|
|
|
|
|
|
|
|
offset += b;
|
|
|
|
}
|
|
|
|
|
|
|
|
percpu_ref_put(&ca->io_ref);
|
|
|
|
}
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
static int get_stripe_key(struct bch_fs *c, u64 idx, struct ec_stripe_buf *stripe)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
2019-03-25 19:10:15 +00:00
|
|
|
struct btree_trans trans;
|
2021-08-30 19:18:31 +00:00
|
|
|
struct btree_iter iter;
|
2021-01-11 18:51:23 +00:00
|
|
|
struct bkey_s_c k;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
bch2_trans_init(&trans, c, 0, 0);
|
2021-08-30 19:18:31 +00:00
|
|
|
bch2_trans_iter_init(&trans, &iter, BTREE_ID_stripes,
|
|
|
|
POS(0, idx), BTREE_ITER_SLOTS);
|
|
|
|
k = bch2_btree_iter_peek_slot(&iter);
|
2021-01-11 18:51:23 +00:00
|
|
|
ret = bkey_err(k);
|
|
|
|
if (ret)
|
|
|
|
goto err;
|
|
|
|
if (k.k->type != KEY_TYPE_stripe) {
|
|
|
|
ret = -ENOENT;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
bkey_reassemble(&stripe->key.k_i, k);
|
|
|
|
err:
|
2021-08-30 19:18:31 +00:00
|
|
|
bch2_trans_iter_exit(&trans, &iter);
|
2021-01-11 18:51:23 +00:00
|
|
|
bch2_trans_exit(&trans);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* recovery read path: */
|
|
|
|
int bch2_ec_read_extent(struct bch_fs *c, struct bch_read_bio *rbio)
|
|
|
|
{
|
2018-11-01 19:13:19 +00:00
|
|
|
struct ec_stripe_buf *buf;
|
|
|
|
struct closure cl;
|
|
|
|
struct bch_stripe *v;
|
2021-01-11 18:51:23 +00:00
|
|
|
unsigned i, offset;
|
|
|
|
int ret = 0;
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
closure_init_stack(&cl);
|
|
|
|
|
2019-10-08 22:45:29 +00:00
|
|
|
BUG_ON(!rbio->pick.has_ec);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
buf = kzalloc(sizeof(*buf), GFP_NOIO);
|
|
|
|
if (!buf)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
ret = get_stripe_key(c, rbio->pick.ec.idx, buf);
|
|
|
|
if (ret) {
|
2020-12-03 18:57:22 +00:00
|
|
|
bch_err_ratelimited(c,
|
2021-01-11 18:51:23 +00:00
|
|
|
"error doing reconstruct read: error %i looking up stripe", ret);
|
2018-11-01 19:13:19 +00:00
|
|
|
kfree(buf);
|
2021-01-11 18:51:23 +00:00
|
|
|
return -EIO;
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
v = &buf->key.v;
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
if (!bch2_ptr_matches_stripe(v, rbio->pick)) {
|
|
|
|
bch_err_ratelimited(c,
|
|
|
|
"error doing reconstruct read: pointer doesn't match stripe");
|
|
|
|
ret = -EIO;
|
|
|
|
goto err;
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
offset = rbio->bio.bi_iter.bi_sector - v->ptrs[rbio->pick.ec.block].offset;
|
|
|
|
if (offset + bio_sectors(&rbio->bio) > le16_to_cpu(v->sectors)) {
|
|
|
|
bch_err_ratelimited(c,
|
|
|
|
"error doing reconstruct read: read is bigger than stripe");
|
|
|
|
ret = -EIO;
|
|
|
|
goto err;
|
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
ret = ec_stripe_buf_init(buf, offset, bio_sectors(&rbio->bio));
|
|
|
|
if (ret)
|
|
|
|
goto err;
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
for (i = 0; i < v->nr_blocks; i++)
|
2018-11-01 19:13:19 +00:00
|
|
|
ec_block_io(c, buf, REQ_OP_READ, i, &cl);
|
|
|
|
|
|
|
|
closure_sync(&cl);
|
|
|
|
|
|
|
|
if (ec_nr_failed(buf) > v->nr_redundant) {
|
2020-12-03 18:57:22 +00:00
|
|
|
bch_err_ratelimited(c,
|
2018-11-01 19:13:19 +00:00
|
|
|
"error doing reconstruct read: unable to read enough blocks");
|
|
|
|
ret = -EIO;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
ec_validate_checksums(c, buf);
|
|
|
|
|
|
|
|
ret = ec_do_recov(c, buf);
|
|
|
|
if (ret)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
memcpy_to_bio(&rbio->bio, rbio->bio.bi_iter,
|
2021-01-11 18:51:23 +00:00
|
|
|
buf->data[rbio->pick.ec.block] + ((offset - buf->offset) << 9));
|
2018-11-01 19:13:19 +00:00
|
|
|
err:
|
2021-01-11 18:51:23 +00:00
|
|
|
ec_stripe_buf_exit(buf);
|
2018-11-01 19:13:19 +00:00
|
|
|
kfree(buf);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2018-11-24 22:09:44 +00:00
|
|
|
/* stripe bucket accounting: */
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
static int __ec_stripe_mem_alloc(struct bch_fs *c, size_t idx, gfp_t gfp)
|
|
|
|
{
|
|
|
|
ec_stripes_heap n, *h = &c->ec_stripes_heap;
|
|
|
|
|
|
|
|
if (idx >= h->size) {
|
|
|
|
if (!init_heap(&n, max(1024UL, roundup_pow_of_two(idx + 1)), gfp))
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
spin_lock(&c->ec_stripes_heap_lock);
|
|
|
|
if (n.size > h->size) {
|
|
|
|
memcpy(n.data, h->data, h->used * sizeof(h->data[0]));
|
|
|
|
n.used = h->used;
|
|
|
|
swap(*h, n);
|
|
|
|
}
|
|
|
|
spin_unlock(&c->ec_stripes_heap_lock);
|
|
|
|
|
|
|
|
free_heap(&n);
|
|
|
|
}
|
|
|
|
|
2021-12-05 04:07:33 +00:00
|
|
|
if (!genradix_ptr_alloc(&c->stripes, idx, gfp))
|
2018-11-24 22:09:44 +00:00
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
if (c->gc_pos.phase != GC_PHASE_NOT_RUNNING &&
|
2021-12-05 04:07:33 +00:00
|
|
|
!genradix_ptr_alloc(&c->gc_stripes, idx, gfp))
|
2018-11-01 19:13:19 +00:00
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2021-08-25 01:30:06 +00:00
|
|
|
static int ec_stripe_mem_alloc(struct btree_trans *trans,
|
2018-11-01 19:13:19 +00:00
|
|
|
struct btree_iter *iter)
|
|
|
|
{
|
|
|
|
size_t idx = iter->pos.offset;
|
|
|
|
|
2021-08-25 01:30:06 +00:00
|
|
|
if (!__ec_stripe_mem_alloc(trans->c, idx, GFP_NOWAIT|__GFP_NOWARN))
|
2022-07-18 03:06:38 +00:00
|
|
|
return 0;
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-08-25 01:30:06 +00:00
|
|
|
bch2_trans_unlock(trans);
|
2019-03-11 18:59:58 +00:00
|
|
|
|
2022-07-18 03:06:38 +00:00
|
|
|
return __ec_stripe_mem_alloc(trans->c, idx, GFP_KERNEL) ?:
|
|
|
|
bch2_trans_relock(trans);
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t stripe_idx_to_delete(struct bch_fs *c)
|
|
|
|
{
|
|
|
|
ec_stripes_heap *h = &c->ec_stripes_heap;
|
|
|
|
|
2019-07-11 16:45:59 +00:00
|
|
|
return h->used && h->data[0].blocks_nonempty == 0
|
|
|
|
? h->data[0].idx : -1;
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ec_stripes_heap_cmp(ec_stripes_heap *h,
|
|
|
|
struct ec_stripe_heap_entry l,
|
|
|
|
struct ec_stripe_heap_entry r)
|
|
|
|
{
|
|
|
|
return ((l.blocks_nonempty > r.blocks_nonempty) -
|
|
|
|
(l.blocks_nonempty < r.blocks_nonempty));
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void ec_stripes_heap_set_backpointer(ec_stripes_heap *h,
|
|
|
|
size_t i)
|
|
|
|
{
|
|
|
|
struct bch_fs *c = container_of(h, struct bch_fs, ec_stripes_heap);
|
|
|
|
|
2021-12-05 04:07:33 +00:00
|
|
|
genradix_ptr(&c->stripes, h->data[i].idx)->heap_idx = i;
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void heap_verify_backpointer(struct bch_fs *c, size_t idx)
|
|
|
|
{
|
|
|
|
ec_stripes_heap *h = &c->ec_stripes_heap;
|
2021-12-05 04:07:33 +00:00
|
|
|
struct stripe *m = genradix_ptr(&c->stripes, idx);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
BUG_ON(!m->alive);
|
|
|
|
BUG_ON(m->heap_idx >= h->used);
|
|
|
|
BUG_ON(h->data[m->heap_idx].idx != idx);
|
|
|
|
}
|
|
|
|
|
|
|
|
void bch2_stripes_heap_del(struct bch_fs *c,
|
2018-11-24 22:09:44 +00:00
|
|
|
struct stripe *m, size_t idx)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
2020-07-07 00:18:13 +00:00
|
|
|
if (!m->on_heap)
|
|
|
|
return;
|
|
|
|
|
|
|
|
m->on_heap = false;
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
heap_verify_backpointer(c, idx);
|
|
|
|
|
|
|
|
heap_del(&c->ec_stripes_heap, m->heap_idx,
|
|
|
|
ec_stripes_heap_cmp,
|
|
|
|
ec_stripes_heap_set_backpointer);
|
|
|
|
}
|
|
|
|
|
|
|
|
void bch2_stripes_heap_insert(struct bch_fs *c,
|
2018-11-24 22:09:44 +00:00
|
|
|
struct stripe *m, size_t idx)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
2020-07-07 00:18:13 +00:00
|
|
|
if (m->on_heap)
|
|
|
|
return;
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
BUG_ON(heap_full(&c->ec_stripes_heap));
|
|
|
|
|
2020-07-07 00:18:13 +00:00
|
|
|
m->on_heap = true;
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
heap_add(&c->ec_stripes_heap, ((struct ec_stripe_heap_entry) {
|
|
|
|
.idx = idx,
|
2018-11-26 01:53:51 +00:00
|
|
|
.blocks_nonempty = m->blocks_nonempty,
|
2018-11-01 19:13:19 +00:00
|
|
|
}),
|
|
|
|
ec_stripes_heap_cmp,
|
|
|
|
ec_stripes_heap_set_backpointer);
|
|
|
|
|
|
|
|
heap_verify_backpointer(c, idx);
|
|
|
|
}
|
|
|
|
|
2020-07-07 00:18:13 +00:00
|
|
|
void bch2_stripes_heap_update(struct bch_fs *c,
|
|
|
|
struct stripe *m, size_t idx)
|
|
|
|
{
|
|
|
|
ec_stripes_heap *h = &c->ec_stripes_heap;
|
|
|
|
size_t i;
|
|
|
|
|
|
|
|
if (!m->on_heap)
|
|
|
|
return;
|
|
|
|
|
|
|
|
heap_verify_backpointer(c, idx);
|
|
|
|
|
|
|
|
h->data[m->heap_idx].blocks_nonempty = m->blocks_nonempty;
|
|
|
|
|
|
|
|
i = m->heap_idx;
|
|
|
|
heap_sift_up(h, i, ec_stripes_heap_cmp,
|
|
|
|
ec_stripes_heap_set_backpointer);
|
|
|
|
heap_sift_down(h, i, ec_stripes_heap_cmp,
|
|
|
|
ec_stripes_heap_set_backpointer);
|
|
|
|
|
|
|
|
heap_verify_backpointer(c, idx);
|
|
|
|
|
2023-02-09 17:22:58 +00:00
|
|
|
if (stripe_idx_to_delete(c) >= 0)
|
|
|
|
bch2_do_stripe_deletes(c);
|
2020-07-07 00:18:13 +00:00
|
|
|
}
|
|
|
|
|
2018-11-24 22:09:44 +00:00
|
|
|
/* stripe deletion */
|
|
|
|
|
2019-03-14 00:49:16 +00:00
|
|
|
static int ec_stripe_delete(struct bch_fs *c, size_t idx)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
2021-02-21 00:27:37 +00:00
|
|
|
return bch2_btree_delete_range(c, BTREE_ID_stripes,
|
2019-03-14 00:49:16 +00:00
|
|
|
POS(0, idx),
|
2022-10-11 08:32:41 +00:00
|
|
|
POS(0, idx),
|
2021-12-29 18:49:34 +00:00
|
|
|
0, NULL);
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void ec_stripe_delete_work(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct bch_fs *c =
|
|
|
|
container_of(work, struct bch_fs, ec_stripe_delete_work);
|
|
|
|
ssize_t idx;
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
spin_lock(&c->ec_stripes_heap_lock);
|
|
|
|
idx = stripe_idx_to_delete(c);
|
2020-07-07 00:18:13 +00:00
|
|
|
if (idx < 0) {
|
|
|
|
spin_unlock(&c->ec_stripes_heap_lock);
|
2018-11-01 19:13:19 +00:00
|
|
|
break;
|
2020-07-07 00:18:13 +00:00
|
|
|
}
|
|
|
|
|
2021-12-05 04:07:33 +00:00
|
|
|
bch2_stripes_heap_del(c, genradix_ptr(&c->stripes, idx), idx);
|
2020-07-07 00:18:13 +00:00
|
|
|
spin_unlock(&c->ec_stripes_heap_lock);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2019-07-10 20:04:58 +00:00
|
|
|
if (ec_stripe_delete(c, idx))
|
|
|
|
break;
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
2023-02-09 17:22:58 +00:00
|
|
|
|
2023-02-09 17:21:45 +00:00
|
|
|
bch2_write_ref_put(c, BCH_WRITE_REF_stripe_delete);
|
2023-02-09 17:22:58 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void bch2_do_stripe_deletes(struct bch_fs *c)
|
|
|
|
{
|
2023-02-09 17:21:45 +00:00
|
|
|
if (bch2_write_ref_tryget(c, BCH_WRITE_REF_stripe_delete) &&
|
2023-02-09 17:22:58 +00:00
|
|
|
!schedule_work(&c->ec_stripe_delete_work))
|
2023-02-09 17:21:45 +00:00
|
|
|
bch2_write_ref_put(c, BCH_WRITE_REF_stripe_delete);
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
2018-11-24 22:09:44 +00:00
|
|
|
/* stripe creation: */
|
|
|
|
|
2021-12-05 04:07:33 +00:00
|
|
|
static int ec_stripe_bkey_insert(struct btree_trans *trans,
|
2021-01-17 22:43:49 +00:00
|
|
|
struct bkey_i_stripe *stripe,
|
|
|
|
struct disk_reservation *res)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
2021-12-05 04:07:33 +00:00
|
|
|
struct bch_fs *c = trans->c;
|
2021-08-30 19:18:31 +00:00
|
|
|
struct btree_iter iter;
|
2018-11-01 19:13:19 +00:00
|
|
|
struct bkey_s_c k;
|
2021-01-19 01:20:24 +00:00
|
|
|
struct bpos min_pos = POS(0, 1);
|
|
|
|
struct bpos start_pos = bpos_max(min_pos, POS(0, c->ec_stripe_hint));
|
2018-11-01 19:13:19 +00:00
|
|
|
int ret;
|
|
|
|
|
2022-07-18 00:08:37 +00:00
|
|
|
for_each_btree_key_norestart(trans, iter, BTREE_ID_stripes, start_pos,
|
2019-04-17 19:49:28 +00:00
|
|
|
BTREE_ITER_SLOTS|BTREE_ITER_INTENT, k, ret) {
|
2022-11-24 08:12:22 +00:00
|
|
|
if (bkey_gt(k.k->p, POS(0, U32_MAX))) {
|
2019-08-22 21:09:16 +00:00
|
|
|
if (start_pos.offset) {
|
2021-01-19 01:20:24 +00:00
|
|
|
start_pos = min_pos;
|
2021-08-30 19:18:31 +00:00
|
|
|
bch2_btree_iter_set_pos(&iter, start_pos);
|
2019-08-22 21:09:16 +00:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2022-09-18 21:10:33 +00:00
|
|
|
ret = -BCH_ERR_ENOSPC_stripe_create;
|
2019-03-14 00:49:16 +00:00
|
|
|
break;
|
2019-08-22 21:09:16 +00:00
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
if (bkey_deleted(k.k))
|
2022-07-18 00:08:37 +00:00
|
|
|
break;
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
2022-07-18 00:08:37 +00:00
|
|
|
c->ec_stripe_hint = iter.pos.offset;
|
|
|
|
|
|
|
|
if (ret)
|
|
|
|
goto err;
|
2019-08-22 21:09:16 +00:00
|
|
|
|
2021-12-05 04:07:33 +00:00
|
|
|
ret = ec_stripe_mem_alloc(trans, &iter);
|
2018-11-01 19:13:19 +00:00
|
|
|
if (ret)
|
2019-03-11 18:59:58 +00:00
|
|
|
goto err;
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-08-30 19:18:31 +00:00
|
|
|
stripe->k.p = iter.pos;
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-12-05 04:07:33 +00:00
|
|
|
ret = bch2_trans_update(trans, &iter, &stripe->k_i, 0);
|
|
|
|
err:
|
|
|
|
bch2_trans_iter_exit(trans, &iter);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2021-01-17 22:43:49 +00:00
|
|
|
static int ec_stripe_bkey_update(struct btree_trans *trans,
|
2021-12-05 04:07:33 +00:00
|
|
|
struct bkey_i_stripe *new,
|
|
|
|
struct disk_reservation *res)
|
2021-01-17 22:43:49 +00:00
|
|
|
{
|
2021-08-30 19:18:31 +00:00
|
|
|
struct btree_iter iter;
|
2021-01-17 22:43:49 +00:00
|
|
|
struct bkey_s_c k;
|
|
|
|
const struct bch_stripe *existing;
|
|
|
|
unsigned i;
|
|
|
|
int ret;
|
|
|
|
|
2021-08-30 19:18:31 +00:00
|
|
|
bch2_trans_iter_init(trans, &iter, BTREE_ID_stripes,
|
|
|
|
new->k.p, BTREE_ITER_INTENT);
|
|
|
|
k = bch2_btree_iter_peek_slot(&iter);
|
2021-01-17 22:43:49 +00:00
|
|
|
ret = bkey_err(k);
|
|
|
|
if (ret)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
if (!k.k || k.k->type != KEY_TYPE_stripe) {
|
2021-01-28 00:36:09 +00:00
|
|
|
bch_err(trans->c, "error updating stripe: not found");
|
2021-01-17 22:43:49 +00:00
|
|
|
ret = -ENOENT;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
existing = bkey_s_c_to_stripe(k).v;
|
|
|
|
|
|
|
|
if (existing->nr_blocks != new->v.nr_blocks) {
|
2021-01-28 00:36:09 +00:00
|
|
|
bch_err(trans->c, "error updating stripe: nr_blocks does not match");
|
2021-01-17 22:43:49 +00:00
|
|
|
ret = -EINVAL;
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < new->v.nr_blocks; i++)
|
|
|
|
stripe_blockcount_set(&new->v, i,
|
|
|
|
stripe_blockcount_get(existing, i));
|
|
|
|
|
2021-08-30 19:18:31 +00:00
|
|
|
ret = bch2_trans_update(trans, &iter, &new->k_i, 0);
|
2021-01-17 22:43:49 +00:00
|
|
|
err:
|
2021-08-30 19:18:31 +00:00
|
|
|
bch2_trans_iter_exit(trans, &iter);
|
2021-01-17 22:43:49 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
static void extent_stripe_ptr_add(struct bkey_s_extent e,
|
|
|
|
struct ec_stripe_buf *s,
|
|
|
|
struct bch_extent_ptr *ptr,
|
|
|
|
unsigned block)
|
|
|
|
{
|
|
|
|
struct bch_extent_stripe_ptr *dst = (void *) ptr;
|
|
|
|
union bch_extent_entry *end = extent_entry_last(e);
|
|
|
|
|
|
|
|
memmove_u64s_up(dst + 1, dst, (u64 *) end - (u64 *) dst);
|
|
|
|
e.k->u64s += sizeof(*dst) / sizeof(u64);
|
|
|
|
|
|
|
|
*dst = (struct bch_extent_stripe_ptr) {
|
|
|
|
.type = 1 << BCH_EXTENT_ENTRY_stripe_ptr,
|
|
|
|
.block = block,
|
2021-01-22 23:01:07 +00:00
|
|
|
.redundancy = s->key.v.nr_redundant,
|
2018-11-01 19:13:19 +00:00
|
|
|
.idx = s->key.k.p.offset,
|
|
|
|
};
|
|
|
|
}
|
|
|
|
|
2022-07-17 04:44:19 +00:00
|
|
|
static int ec_stripe_update_extent(struct btree_trans *trans,
|
2022-10-09 04:29:51 +00:00
|
|
|
struct bpos bucket, u8 gen,
|
2022-07-17 04:44:19 +00:00
|
|
|
struct ec_stripe_buf *s,
|
2022-10-09 04:29:51 +00:00
|
|
|
u64 *bp_offset)
|
2022-07-17 04:44:19 +00:00
|
|
|
{
|
2022-10-09 04:29:51 +00:00
|
|
|
struct bch_fs *c = trans->c;
|
|
|
|
struct bch_backpointer bp;
|
|
|
|
struct btree_iter iter;
|
|
|
|
struct bkey_s_c k;
|
2022-07-17 04:44:19 +00:00
|
|
|
const struct bch_extent_ptr *ptr_c;
|
|
|
|
struct bch_extent_ptr *ptr, *ec_ptr = NULL;
|
|
|
|
struct bkey_i *n;
|
|
|
|
int ret, dev, block;
|
|
|
|
|
2022-10-14 11:02:36 +00:00
|
|
|
ret = bch2_get_next_backpointer(trans, bucket, gen,
|
|
|
|
bp_offset, &bp, BTREE_ITER_CACHED);
|
2022-10-09 04:29:51 +00:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
if (*bp_offset == U64_MAX)
|
|
|
|
return 0;
|
2022-07-17 04:44:19 +00:00
|
|
|
|
2022-10-09 04:29:51 +00:00
|
|
|
if (bch2_fs_inconsistent_on(bp.level, c, "found btree node in erasure coded bucket!?"))
|
|
|
|
return -EIO;
|
|
|
|
|
|
|
|
k = bch2_backpointer_get_key(trans, &iter, bucket, *bp_offset, bp);
|
|
|
|
ret = bkey_err(k);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
if (!k.k) {
|
|
|
|
/*
|
|
|
|
* extent no longer exists - we could flush the btree
|
|
|
|
* write buffer and retry to verify, but no need:
|
|
|
|
*/
|
2022-07-17 04:44:19 +00:00
|
|
|
return 0;
|
2022-10-09 04:29:51 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (extent_has_stripe_ptr(k, s->key.k.p.offset))
|
|
|
|
goto out;
|
2022-07-17 04:44:19 +00:00
|
|
|
|
|
|
|
ptr_c = bkey_matches_stripe(&s->key.v, k, &block);
|
|
|
|
/*
|
|
|
|
* It doesn't generally make sense to erasure code cached ptrs:
|
|
|
|
* XXX: should we be incrementing a counter?
|
|
|
|
*/
|
|
|
|
if (!ptr_c || ptr_c->cached)
|
2022-10-09 04:29:51 +00:00
|
|
|
goto out;
|
2022-07-17 04:44:19 +00:00
|
|
|
|
|
|
|
dev = s->key.v.ptrs[block].dev;
|
|
|
|
|
2022-11-24 03:13:19 +00:00
|
|
|
n = bch2_bkey_make_mut(trans, k);
|
2022-07-17 04:44:19 +00:00
|
|
|
ret = PTR_ERR_OR_ZERO(n);
|
|
|
|
if (ret)
|
2022-10-09 04:29:51 +00:00
|
|
|
goto out;
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2022-07-17 04:44:19 +00:00
|
|
|
bch2_bkey_drop_ptrs(bkey_i_to_s(n), ptr, ptr->dev != dev);
|
|
|
|
ec_ptr = (void *) bch2_bkey_has_device(bkey_i_to_s_c(n), dev);
|
|
|
|
BUG_ON(!ec_ptr);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2022-07-17 04:44:19 +00:00
|
|
|
extent_stripe_ptr_add(bkey_i_to_s_extent(n), s, ec_ptr, block);
|
2021-08-29 23:34:37 +00:00
|
|
|
|
2022-10-09 04:29:51 +00:00
|
|
|
ret = bch2_trans_update(trans, &iter, n, 0);
|
|
|
|
out:
|
|
|
|
bch2_trans_iter_exit(trans, &iter);
|
|
|
|
return ret;
|
2022-07-17 04:44:19 +00:00
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2022-10-09 04:29:51 +00:00
|
|
|
static int ec_stripe_update_bucket(struct btree_trans *trans, struct ec_stripe_buf *s,
|
|
|
|
unsigned block)
|
2022-07-17 04:44:19 +00:00
|
|
|
{
|
2022-10-09 04:29:51 +00:00
|
|
|
struct bch_fs *c = trans->c;
|
|
|
|
struct bch_extent_ptr bucket = s->key.v.ptrs[block];
|
|
|
|
struct bpos bucket_pos = PTR_BUCKET_POS(c, &bucket);
|
|
|
|
u64 bp_offset = 0;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
ret = commit_do(trans, NULL, NULL,
|
|
|
|
BTREE_INSERT_NOFAIL,
|
|
|
|
ec_stripe_update_extent(trans, bucket_pos, bucket.gen,
|
|
|
|
s, &bp_offset));
|
|
|
|
if (ret)
|
|
|
|
break;
|
|
|
|
if (bp_offset == U64_MAX)
|
|
|
|
break;
|
|
|
|
|
|
|
|
bp_offset++;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ec_stripe_update_extents(struct bch_fs *c, struct ec_stripe_buf *s)
|
|
|
|
{
|
|
|
|
struct btree_trans trans;
|
|
|
|
struct bch_stripe *v = &s->key.v;
|
|
|
|
unsigned i, nr_data = v->nr_blocks - v->nr_redundant;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
bch2_trans_init(&trans, c, 0, 0);
|
2019-03-14 00:49:16 +00:00
|
|
|
|
2022-10-09 04:29:51 +00:00
|
|
|
ret = bch2_btree_write_buffer_flush(&trans);
|
|
|
|
if (ret)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
for (i = 0; i < nr_data; i++) {
|
|
|
|
ret = ec_stripe_update_bucket(&trans, s, i);
|
|
|
|
if (ret)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
err:
|
|
|
|
bch2_trans_exit(&trans);
|
|
|
|
|
|
|
|
return ret;
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* data buckets of new stripe all written: create the stripe
|
|
|
|
*/
|
|
|
|
static void ec_stripe_create(struct ec_stripe_new *s)
|
|
|
|
{
|
|
|
|
struct bch_fs *c = s->c;
|
|
|
|
struct open_bucket *ob;
|
2020-07-07 00:18:13 +00:00
|
|
|
struct stripe *m;
|
2020-12-15 00:41:03 +00:00
|
|
|
struct bch_stripe *v = &s->new_stripe.key.v;
|
2018-11-01 19:13:19 +00:00
|
|
|
unsigned i, nr_data = v->nr_blocks - v->nr_redundant;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
BUG_ON(s->h->s == s);
|
|
|
|
|
2020-12-15 00:41:03 +00:00
|
|
|
closure_sync(&s->iodone);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
if (s->err) {
|
2022-12-12 01:37:11 +00:00
|
|
|
if (!bch2_err_matches(s->err, EROFS))
|
2020-07-07 00:59:46 +00:00
|
|
|
bch_err(c, "error creating stripe: error writing data buckets");
|
2018-11-01 19:13:19 +00:00
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
2020-12-15 00:41:03 +00:00
|
|
|
if (s->have_existing_stripe) {
|
|
|
|
ec_validate_checksums(c, &s->existing_stripe);
|
|
|
|
|
|
|
|
if (ec_do_recov(c, &s->existing_stripe)) {
|
|
|
|
bch_err(c, "error creating stripe: error reading existing stripe");
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < nr_data; i++)
|
|
|
|
if (stripe_blockcount_get(&s->existing_stripe.key.v, i))
|
|
|
|
swap(s->new_stripe.data[i],
|
|
|
|
s->existing_stripe.data[i]);
|
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
ec_stripe_buf_exit(&s->existing_stripe);
|
2020-12-15 00:41:03 +00:00
|
|
|
}
|
|
|
|
|
2020-07-07 02:33:54 +00:00
|
|
|
BUG_ON(!s->allocated);
|
|
|
|
|
2023-02-09 17:21:45 +00:00
|
|
|
if (!bch2_write_ref_tryget(c, BCH_WRITE_REF_stripe_create))
|
2018-11-01 19:13:19 +00:00
|
|
|
goto err;
|
|
|
|
|
2020-12-15 00:41:03 +00:00
|
|
|
ec_generate_ec(&s->new_stripe);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2020-12-15 00:41:03 +00:00
|
|
|
ec_generate_checksums(&s->new_stripe);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
/* write p/q: */
|
|
|
|
for (i = nr_data; i < v->nr_blocks; i++)
|
2020-12-15 00:41:03 +00:00
|
|
|
ec_block_io(c, &s->new_stripe, REQ_OP_WRITE, i, &s->iodone);
|
|
|
|
closure_sync(&s->iodone);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2020-12-15 00:41:03 +00:00
|
|
|
if (ec_nr_failed(&s->new_stripe)) {
|
|
|
|
bch_err(c, "error creating stripe: error writing redundancy buckets");
|
|
|
|
goto err_put_writes;
|
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-12-05 04:07:33 +00:00
|
|
|
ret = bch2_trans_do(c, &s->res, NULL, BTREE_INSERT_NOFAIL,
|
|
|
|
s->have_existing_stripe
|
|
|
|
? ec_stripe_bkey_update(&trans, &s->new_stripe.key, &s->res)
|
|
|
|
: ec_stripe_bkey_insert(&trans, &s->new_stripe.key, &s->res));
|
2018-11-01 19:13:19 +00:00
|
|
|
if (ret) {
|
|
|
|
bch_err(c, "error creating stripe: error creating stripe key");
|
2020-07-07 00:18:13 +00:00
|
|
|
goto err_put_writes;
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
2022-10-09 04:29:51 +00:00
|
|
|
ret = ec_stripe_update_extents(c, &s->new_stripe);
|
|
|
|
if (ret)
|
|
|
|
bch_err(c, "error creating stripe: error updating pointers: %s",
|
|
|
|
bch2_err_str(ret));
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2020-07-07 00:18:13 +00:00
|
|
|
spin_lock(&c->ec_stripes_heap_lock);
|
2021-12-05 04:07:33 +00:00
|
|
|
m = genradix_ptr(&c->stripes, s->new_stripe.key.k.p.offset);
|
2021-01-17 22:43:49 +00:00
|
|
|
|
2020-07-07 00:18:13 +00:00
|
|
|
BUG_ON(m->on_heap);
|
2020-12-15 00:41:03 +00:00
|
|
|
bch2_stripes_heap_insert(c, m, s->new_stripe.key.k.p.offset);
|
2020-07-07 00:18:13 +00:00
|
|
|
spin_unlock(&c->ec_stripes_heap_lock);
|
2018-11-01 19:13:19 +00:00
|
|
|
err_put_writes:
|
2023-02-09 17:21:45 +00:00
|
|
|
bch2_write_ref_put(c, BCH_WRITE_REF_stripe_create);
|
2018-11-01 19:13:19 +00:00
|
|
|
err:
|
2020-07-09 22:31:51 +00:00
|
|
|
bch2_disk_reservation_put(c, &s->res);
|
|
|
|
|
2021-01-19 04:26:42 +00:00
|
|
|
for (i = 0; i < v->nr_blocks; i++)
|
|
|
|
if (s->blocks[i]) {
|
|
|
|
ob = c->open_buckets + s->blocks[i];
|
|
|
|
|
|
|
|
if (i < nr_data) {
|
|
|
|
ob->ec = NULL;
|
|
|
|
__bch2_open_bucket_put(c, ob);
|
|
|
|
} else {
|
|
|
|
bch2_open_bucket_put(c, ob);
|
|
|
|
}
|
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
ec_stripe_buf_exit(&s->existing_stripe);
|
|
|
|
ec_stripe_buf_exit(&s->new_stripe);
|
2020-12-15 00:41:03 +00:00
|
|
|
closure_debug_destroy(&s->iodone);
|
2018-11-01 19:13:19 +00:00
|
|
|
kfree(s);
|
|
|
|
}
|
|
|
|
|
2020-07-07 00:59:46 +00:00
|
|
|
static void ec_stripe_create_work(struct work_struct *work)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
2020-07-07 00:59:46 +00:00
|
|
|
struct bch_fs *c = container_of(work,
|
|
|
|
struct bch_fs, ec_stripe_create_work);
|
|
|
|
struct ec_stripe_new *s, *n;
|
|
|
|
restart:
|
|
|
|
mutex_lock(&c->ec_stripe_new_lock);
|
|
|
|
list_for_each_entry_safe(s, n, &c->ec_stripe_new_list, list)
|
|
|
|
if (!atomic_read(&s->pin)) {
|
|
|
|
list_del(&s->list);
|
|
|
|
mutex_unlock(&c->ec_stripe_new_lock);
|
|
|
|
ec_stripe_create(s);
|
|
|
|
goto restart;
|
|
|
|
}
|
|
|
|
mutex_unlock(&c->ec_stripe_new_lock);
|
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2020-07-07 00:59:46 +00:00
|
|
|
static void ec_stripe_new_put(struct bch_fs *c, struct ec_stripe_new *s)
|
|
|
|
{
|
|
|
|
BUG_ON(atomic_read(&s->pin) <= 0);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2020-07-07 00:59:46 +00:00
|
|
|
if (atomic_dec_and_test(&s->pin)) {
|
|
|
|
BUG_ON(!s->pending);
|
|
|
|
queue_work(system_long_wq, &c->ec_stripe_create_work);
|
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
2020-07-07 00:59:46 +00:00
|
|
|
static void ec_stripe_set_pending(struct bch_fs *c, struct ec_stripe_head *h)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
2020-07-07 00:59:46 +00:00
|
|
|
struct ec_stripe_new *s = h->s;
|
|
|
|
|
2020-07-07 02:33:54 +00:00
|
|
|
BUG_ON(!s->allocated && !s->err);
|
|
|
|
|
2020-07-07 00:59:46 +00:00
|
|
|
h->s = NULL;
|
|
|
|
s->pending = true;
|
|
|
|
|
|
|
|
mutex_lock(&c->ec_stripe_new_lock);
|
|
|
|
list_add(&s->list, &c->ec_stripe_new_list);
|
|
|
|
mutex_unlock(&c->ec_stripe_new_lock);
|
|
|
|
|
|
|
|
ec_stripe_new_put(c, s);
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* have a full bucket - hand it off to be erasure coded: */
|
|
|
|
void bch2_ec_bucket_written(struct bch_fs *c, struct open_bucket *ob)
|
|
|
|
{
|
|
|
|
struct ec_stripe_new *s = ob->ec;
|
|
|
|
|
|
|
|
if (ob->sectors_free)
|
|
|
|
s->err = -1;
|
|
|
|
|
2020-07-07 00:59:46 +00:00
|
|
|
ec_stripe_new_put(c, s);
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void bch2_ec_bucket_cancel(struct bch_fs *c, struct open_bucket *ob)
|
|
|
|
{
|
|
|
|
struct ec_stripe_new *s = ob->ec;
|
|
|
|
|
|
|
|
s->err = -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
void *bch2_writepoint_ec_buf(struct bch_fs *c, struct write_point *wp)
|
|
|
|
{
|
|
|
|
struct open_bucket *ob = ec_open_bucket(c, &wp->ptrs);
|
|
|
|
struct bch_dev *ca;
|
|
|
|
unsigned offset;
|
|
|
|
|
|
|
|
if (!ob)
|
|
|
|
return NULL;
|
|
|
|
|
2021-12-26 02:21:46 +00:00
|
|
|
ca = bch_dev_bkey_exists(c, ob->dev);
|
2018-11-01 19:13:19 +00:00
|
|
|
offset = ca->mi.bucket_size - ob->sectors_free;
|
|
|
|
|
2020-12-15 00:41:03 +00:00
|
|
|
return ob->ec->new_stripe.data[ob->ec_idx] + (offset << 9);
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int unsigned_cmp(const void *_l, const void *_r)
|
|
|
|
{
|
|
|
|
unsigned l = *((const unsigned *) _l);
|
|
|
|
unsigned r = *((const unsigned *) _r);
|
|
|
|
|
2019-04-12 08:54:12 +00:00
|
|
|
return cmp_int(l, r);
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* pick most common bucket size: */
|
|
|
|
static unsigned pick_blocksize(struct bch_fs *c,
|
|
|
|
struct bch_devs_mask *devs)
|
|
|
|
{
|
|
|
|
struct bch_dev *ca;
|
|
|
|
unsigned i, nr = 0, sizes[BCH_SB_MEMBERS_MAX];
|
|
|
|
struct {
|
|
|
|
unsigned nr, size;
|
|
|
|
} cur = { 0, 0 }, best = { 0, 0 };
|
|
|
|
|
|
|
|
for_each_member_device_rcu(ca, c, i, devs)
|
|
|
|
sizes[nr++] = ca->mi.bucket_size;
|
|
|
|
|
|
|
|
sort(sizes, nr, sizeof(unsigned), unsigned_cmp, NULL);
|
|
|
|
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
|
|
if (sizes[i] != cur.size) {
|
|
|
|
if (cur.nr > best.nr)
|
|
|
|
best = cur;
|
|
|
|
|
|
|
|
cur.nr = 0;
|
|
|
|
cur.size = sizes[i];
|
|
|
|
}
|
|
|
|
|
|
|
|
cur.nr++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cur.nr > best.nr)
|
|
|
|
best = cur;
|
|
|
|
|
|
|
|
return best.size;
|
|
|
|
}
|
|
|
|
|
2020-06-30 18:44:19 +00:00
|
|
|
static bool may_create_new_stripe(struct bch_fs *c)
|
|
|
|
{
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2020-07-07 02:33:54 +00:00
|
|
|
static void ec_stripe_key_init(struct bch_fs *c,
|
|
|
|
struct bkey_i_stripe *s,
|
|
|
|
unsigned nr_data,
|
|
|
|
unsigned nr_parity,
|
|
|
|
unsigned stripe_size)
|
|
|
|
{
|
|
|
|
unsigned u64s;
|
|
|
|
|
|
|
|
bkey_stripe_init(&s->k_i);
|
|
|
|
s->v.sectors = cpu_to_le16(stripe_size);
|
|
|
|
s->v.algorithm = 0;
|
|
|
|
s->v.nr_blocks = nr_data + nr_parity;
|
|
|
|
s->v.nr_redundant = nr_parity;
|
2021-12-14 19:34:03 +00:00
|
|
|
s->v.csum_granularity_bits = ilog2(c->opts.encoded_extent_max >> 9);
|
2021-11-11 17:11:33 +00:00
|
|
|
s->v.csum_type = BCH_CSUM_crc32c;
|
2020-07-07 02:33:54 +00:00
|
|
|
s->v.pad = 0;
|
|
|
|
|
|
|
|
while ((u64s = stripe_val_u64s(&s->v)) > BKEY_VAL_U64s_MAX) {
|
|
|
|
BUG_ON(1 << s->v.csum_granularity_bits >=
|
|
|
|
le16_to_cpu(s->v.sectors) ||
|
|
|
|
s->v.csum_granularity_bits == U8_MAX);
|
|
|
|
s->v.csum_granularity_bits++;
|
|
|
|
}
|
|
|
|
|
|
|
|
set_bkey_val_u64s(&s->k, u64s);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ec_new_stripe_alloc(struct bch_fs *c, struct ec_stripe_head *h)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
|
|
|
struct ec_stripe_new *s;
|
|
|
|
|
|
|
|
lockdep_assert_held(&h->lock);
|
|
|
|
|
|
|
|
s = kzalloc(sizeof(*s), GFP_KERNEL);
|
|
|
|
if (!s)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
mutex_init(&s->lock);
|
2020-12-15 00:41:03 +00:00
|
|
|
closure_init(&s->iodone, NULL);
|
2018-11-01 19:13:19 +00:00
|
|
|
atomic_set(&s->pin, 1);
|
|
|
|
s->c = c;
|
|
|
|
s->h = h;
|
2020-07-07 02:33:54 +00:00
|
|
|
s->nr_data = min_t(unsigned, h->nr_active_devs,
|
2020-12-16 19:23:27 +00:00
|
|
|
BCH_BKEY_PTRS_MAX) - h->redundancy;
|
2020-07-07 02:33:54 +00:00
|
|
|
s->nr_parity = h->redundancy;
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2020-12-15 00:41:03 +00:00
|
|
|
ec_stripe_key_init(c, &s->new_stripe.key, s->nr_data,
|
2020-07-07 02:33:54 +00:00
|
|
|
s->nr_parity, h->blocksize);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
h->s = s;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct ec_stripe_head *
|
|
|
|
ec_new_stripe_head_alloc(struct bch_fs *c, unsigned target,
|
2020-12-15 17:53:30 +00:00
|
|
|
unsigned algo, unsigned redundancy,
|
|
|
|
bool copygc)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
|
|
|
struct ec_stripe_head *h;
|
|
|
|
struct bch_dev *ca;
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
h = kzalloc(sizeof(*h), GFP_KERNEL);
|
|
|
|
if (!h)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
mutex_init(&h->lock);
|
|
|
|
mutex_lock(&h->lock);
|
|
|
|
|
|
|
|
h->target = target;
|
|
|
|
h->algo = algo;
|
|
|
|
h->redundancy = redundancy;
|
2020-12-15 17:53:30 +00:00
|
|
|
h->copygc = copygc;
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
rcu_read_lock();
|
2020-07-09 22:28:11 +00:00
|
|
|
h->devs = target_rw_devs(c, BCH_DATA_user, target);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
for_each_member_device_rcu(ca, c, i, &h->devs)
|
|
|
|
if (!ca->mi.durability)
|
|
|
|
__clear_bit(i, h->devs.d);
|
|
|
|
|
|
|
|
h->blocksize = pick_blocksize(c, &h->devs);
|
|
|
|
|
|
|
|
for_each_member_device_rcu(ca, c, i, &h->devs)
|
|
|
|
if (ca->mi.bucket_size == h->blocksize)
|
|
|
|
h->nr_active_devs++;
|
|
|
|
|
|
|
|
rcu_read_unlock();
|
2020-07-07 00:59:46 +00:00
|
|
|
list_add(&h->list, &c->ec_stripe_head_list);
|
2018-11-01 19:13:19 +00:00
|
|
|
return h;
|
|
|
|
}
|
|
|
|
|
2020-07-07 00:59:46 +00:00
|
|
|
void bch2_ec_stripe_head_put(struct bch_fs *c, struct ec_stripe_head *h)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
|
|
|
if (h->s &&
|
2020-07-07 02:33:54 +00:00
|
|
|
h->s->allocated &&
|
2018-11-01 19:13:19 +00:00
|
|
|
bitmap_weight(h->s->blocks_allocated,
|
2021-01-19 04:26:42 +00:00
|
|
|
h->s->nr_data) == h->s->nr_data)
|
2020-07-07 00:59:46 +00:00
|
|
|
ec_stripe_set_pending(c, h);
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
mutex_unlock(&h->lock);
|
|
|
|
}
|
|
|
|
|
2020-07-07 02:33:54 +00:00
|
|
|
struct ec_stripe_head *__bch2_ec_stripe_head_get(struct bch_fs *c,
|
2020-12-15 17:53:30 +00:00
|
|
|
unsigned target,
|
|
|
|
unsigned algo,
|
|
|
|
unsigned redundancy,
|
|
|
|
bool copygc)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
|
|
|
struct ec_stripe_head *h;
|
|
|
|
|
|
|
|
if (!redundancy)
|
|
|
|
return NULL;
|
|
|
|
|
2020-07-07 00:59:46 +00:00
|
|
|
mutex_lock(&c->ec_stripe_head_lock);
|
|
|
|
list_for_each_entry(h, &c->ec_stripe_head_list, list)
|
2018-11-01 19:13:19 +00:00
|
|
|
if (h->target == target &&
|
|
|
|
h->algo == algo &&
|
2020-12-15 17:53:30 +00:00
|
|
|
h->redundancy == redundancy &&
|
|
|
|
h->copygc == copygc) {
|
2018-11-01 19:13:19 +00:00
|
|
|
mutex_lock(&h->lock);
|
|
|
|
goto found;
|
|
|
|
}
|
|
|
|
|
2020-12-15 17:53:30 +00:00
|
|
|
h = ec_new_stripe_head_alloc(c, target, algo, redundancy, copygc);
|
2018-11-01 19:13:19 +00:00
|
|
|
found:
|
2020-07-07 00:59:46 +00:00
|
|
|
mutex_unlock(&c->ec_stripe_head_lock);
|
2018-11-01 19:13:19 +00:00
|
|
|
return h;
|
|
|
|
}
|
|
|
|
|
2021-11-28 18:42:05 +00:00
|
|
|
static int new_stripe_alloc_buckets(struct bch_fs *c, struct ec_stripe_head *h,
|
|
|
|
struct closure *cl)
|
2020-07-07 02:33:54 +00:00
|
|
|
{
|
2021-01-19 04:26:42 +00:00
|
|
|
struct bch_devs_mask devs = h->devs;
|
2020-07-07 02:33:54 +00:00
|
|
|
struct open_bucket *ob;
|
2021-01-19 04:26:42 +00:00
|
|
|
struct open_buckets buckets;
|
|
|
|
unsigned i, j, nr_have_parity = 0, nr_have_data = 0;
|
2020-07-07 02:33:54 +00:00
|
|
|
bool have_cache = true;
|
2021-11-28 18:42:05 +00:00
|
|
|
int ret = 0;
|
2020-07-07 02:33:54 +00:00
|
|
|
|
2021-01-19 04:26:42 +00:00
|
|
|
for (i = 0; i < h->s->new_stripe.key.v.nr_blocks; i++) {
|
|
|
|
if (test_bit(i, h->s->blocks_gotten)) {
|
|
|
|
__clear_bit(h->s->new_stripe.key.v.ptrs[i].dev, devs.d);
|
|
|
|
if (i < h->s->nr_data)
|
|
|
|
nr_have_data++;
|
|
|
|
else
|
|
|
|
nr_have_parity++;
|
|
|
|
}
|
2020-07-07 02:33:54 +00:00
|
|
|
}
|
|
|
|
|
2021-01-19 04:26:42 +00:00
|
|
|
BUG_ON(nr_have_data > h->s->nr_data);
|
|
|
|
BUG_ON(nr_have_parity > h->s->nr_parity);
|
2020-07-07 02:33:54 +00:00
|
|
|
|
2021-01-19 04:26:42 +00:00
|
|
|
buckets.nr = 0;
|
|
|
|
if (nr_have_parity < h->s->nr_parity) {
|
|
|
|
ret = bch2_bucket_alloc_set(c, &buckets,
|
2020-07-07 02:33:54 +00:00
|
|
|
&h->parity_stripe,
|
|
|
|
&devs,
|
2021-01-19 04:26:42 +00:00
|
|
|
h->s->nr_parity,
|
|
|
|
&nr_have_parity,
|
2020-07-07 02:33:54 +00:00
|
|
|
&have_cache,
|
2020-12-15 17:53:30 +00:00
|
|
|
h->copygc
|
2022-03-13 23:27:55 +00:00
|
|
|
? RESERVE_movinggc
|
|
|
|
: RESERVE_none,
|
2020-07-07 02:33:54 +00:00
|
|
|
0,
|
2020-12-15 17:38:17 +00:00
|
|
|
cl);
|
2021-01-19 04:26:42 +00:00
|
|
|
|
|
|
|
open_bucket_for_each(c, &buckets, ob, i) {
|
|
|
|
j = find_next_zero_bit(h->s->blocks_gotten,
|
|
|
|
h->s->nr_data + h->s->nr_parity,
|
|
|
|
h->s->nr_data);
|
|
|
|
BUG_ON(j >= h->s->nr_data + h->s->nr_parity);
|
|
|
|
|
|
|
|
h->s->blocks[j] = buckets.v[i];
|
2021-12-26 02:21:46 +00:00
|
|
|
h->s->new_stripe.key.v.ptrs[j] = bch2_ob_ptr(c, ob);
|
2021-01-19 04:26:42 +00:00
|
|
|
__set_bit(j, h->s->blocks_gotten);
|
|
|
|
}
|
|
|
|
|
2020-07-07 02:33:54 +00:00
|
|
|
if (ret)
|
2022-01-10 01:48:31 +00:00
|
|
|
return ret;
|
2020-07-07 02:33:54 +00:00
|
|
|
}
|
|
|
|
|
2021-01-19 04:26:42 +00:00
|
|
|
buckets.nr = 0;
|
|
|
|
if (nr_have_data < h->s->nr_data) {
|
|
|
|
ret = bch2_bucket_alloc_set(c, &buckets,
|
2020-07-07 02:33:54 +00:00
|
|
|
&h->block_stripe,
|
|
|
|
&devs,
|
2021-01-19 04:26:42 +00:00
|
|
|
h->s->nr_data,
|
|
|
|
&nr_have_data,
|
2020-07-07 02:33:54 +00:00
|
|
|
&have_cache,
|
2020-12-15 17:53:30 +00:00
|
|
|
h->copygc
|
2022-03-13 23:27:55 +00:00
|
|
|
? RESERVE_movinggc
|
|
|
|
: RESERVE_none,
|
2020-07-07 02:33:54 +00:00
|
|
|
0,
|
2020-12-15 17:38:17 +00:00
|
|
|
cl);
|
2021-01-19 04:26:42 +00:00
|
|
|
|
|
|
|
open_bucket_for_each(c, &buckets, ob, i) {
|
|
|
|
j = find_next_zero_bit(h->s->blocks_gotten,
|
|
|
|
h->s->nr_data, 0);
|
|
|
|
BUG_ON(j >= h->s->nr_data);
|
|
|
|
|
|
|
|
h->s->blocks[j] = buckets.v[i];
|
2021-12-26 02:21:46 +00:00
|
|
|
h->s->new_stripe.key.v.ptrs[j] = bch2_ob_ptr(c, ob);
|
2021-01-19 04:26:42 +00:00
|
|
|
__set_bit(j, h->s->blocks_gotten);
|
|
|
|
}
|
|
|
|
|
2020-07-07 02:33:54 +00:00
|
|
|
if (ret)
|
2022-01-10 01:48:31 +00:00
|
|
|
return ret;
|
2020-07-07 02:33:54 +00:00
|
|
|
}
|
2022-01-10 01:48:31 +00:00
|
|
|
|
|
|
|
return 0;
|
2020-07-07 02:33:54 +00:00
|
|
|
}
|
|
|
|
|
2020-06-30 18:44:19 +00:00
|
|
|
/* XXX: doesn't obey target: */
|
|
|
|
static s64 get_existing_stripe(struct bch_fs *c,
|
2021-01-11 18:51:23 +00:00
|
|
|
struct ec_stripe_head *head)
|
2020-06-30 18:44:19 +00:00
|
|
|
{
|
|
|
|
ec_stripes_heap *h = &c->ec_stripes_heap;
|
|
|
|
struct stripe *m;
|
|
|
|
size_t heap_idx;
|
|
|
|
u64 stripe_idx;
|
2021-01-22 23:01:07 +00:00
|
|
|
s64 ret = -1;
|
2020-06-30 18:44:19 +00:00
|
|
|
|
|
|
|
if (may_create_new_stripe(c))
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
spin_lock(&c->ec_stripes_heap_lock);
|
|
|
|
for (heap_idx = 0; heap_idx < h->used; heap_idx++) {
|
2021-01-22 23:01:07 +00:00
|
|
|
/* No blocks worth reusing, stripe will just be deleted: */
|
2020-06-30 18:44:19 +00:00
|
|
|
if (!h->data[heap_idx].blocks_nonempty)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
stripe_idx = h->data[heap_idx].idx;
|
2021-12-05 04:07:33 +00:00
|
|
|
m = genradix_ptr(&c->stripes, stripe_idx);
|
2020-06-30 18:44:19 +00:00
|
|
|
|
2021-01-11 18:51:23 +00:00
|
|
|
if (m->algorithm == head->algo &&
|
|
|
|
m->nr_redundant == head->redundancy &&
|
|
|
|
m->sectors == head->blocksize &&
|
2020-06-30 18:44:19 +00:00
|
|
|
m->blocks_nonempty < m->nr_blocks - m->nr_redundant) {
|
|
|
|
bch2_stripes_heap_del(c, m, stripe_idx);
|
2021-01-22 23:01:07 +00:00
|
|
|
ret = stripe_idx;
|
|
|
|
break;
|
2020-06-30 18:44:19 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
spin_unlock(&c->ec_stripes_heap_lock);
|
2021-01-22 23:01:07 +00:00
|
|
|
return ret;
|
2020-06-30 18:44:19 +00:00
|
|
|
}
|
|
|
|
|
2021-02-10 00:18:13 +00:00
|
|
|
static int __bch2_ec_stripe_head_reuse(struct bch_fs *c,
|
|
|
|
struct ec_stripe_head *h)
|
|
|
|
{
|
|
|
|
unsigned i;
|
|
|
|
s64 idx;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
idx = get_existing_stripe(c, h);
|
2022-10-09 06:30:50 +00:00
|
|
|
if (idx < 0)
|
2022-09-18 21:10:33 +00:00
|
|
|
return -BCH_ERR_ENOSPC_stripe_reuse;
|
2021-02-10 00:18:13 +00:00
|
|
|
|
|
|
|
h->s->have_existing_stripe = true;
|
|
|
|
ret = get_stripe_key(c, idx, &h->s->existing_stripe);
|
|
|
|
if (ret) {
|
|
|
|
bch2_fs_fatal_error(c, "error reading stripe key: %i", ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ec_stripe_buf_init(&h->s->existing_stripe, 0, h->blocksize)) {
|
|
|
|
/*
|
|
|
|
* this is a problem: we have deleted from the
|
|
|
|
* stripes heap already
|
|
|
|
*/
|
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
|
|
|
|
BUG_ON(h->s->existing_stripe.size != h->blocksize);
|
|
|
|
BUG_ON(h->s->existing_stripe.size != h->s->existing_stripe.key.v.sectors);
|
|
|
|
|
|
|
|
for (i = 0; i < h->s->existing_stripe.key.v.nr_blocks; i++) {
|
|
|
|
if (stripe_blockcount_get(&h->s->existing_stripe.key.v, i)) {
|
|
|
|
__set_bit(i, h->s->blocks_gotten);
|
|
|
|
__set_bit(i, h->s->blocks_allocated);
|
|
|
|
}
|
|
|
|
|
|
|
|
ec_block_io(c, &h->s->existing_stripe, READ, i, &h->s->iodone);
|
|
|
|
}
|
|
|
|
|
|
|
|
bkey_copy(&h->s->new_stripe.key.k_i,
|
2022-10-09 04:29:51 +00:00
|
|
|
&h->s->existing_stripe.key.k_i);
|
2021-02-10 00:18:13 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __bch2_ec_stripe_head_reserve(struct bch_fs *c,
|
|
|
|
struct ec_stripe_head *h)
|
|
|
|
{
|
2022-10-09 06:30:50 +00:00
|
|
|
return bch2_disk_reservation_get(c, &h->s->res,
|
|
|
|
h->blocksize,
|
|
|
|
h->s->nr_parity, 0);
|
2021-02-10 00:18:13 +00:00
|
|
|
}
|
|
|
|
|
2020-07-07 02:33:54 +00:00
|
|
|
struct ec_stripe_head *bch2_ec_stripe_head_get(struct bch_fs *c,
|
|
|
|
unsigned target,
|
|
|
|
unsigned algo,
|
2020-12-15 17:38:17 +00:00
|
|
|
unsigned redundancy,
|
2020-12-15 17:53:30 +00:00
|
|
|
bool copygc,
|
2020-12-15 17:38:17 +00:00
|
|
|
struct closure *cl)
|
2020-07-07 02:33:54 +00:00
|
|
|
{
|
|
|
|
struct ec_stripe_head *h;
|
2020-07-09 22:31:51 +00:00
|
|
|
int ret;
|
2021-02-10 00:18:13 +00:00
|
|
|
bool needs_stripe_new;
|
2020-07-07 02:33:54 +00:00
|
|
|
|
2020-12-15 17:53:30 +00:00
|
|
|
h = __bch2_ec_stripe_head_get(c, target, algo, redundancy, copygc);
|
2020-12-15 00:41:03 +00:00
|
|
|
if (!h) {
|
|
|
|
bch_err(c, "no stripe head");
|
2020-07-07 02:33:54 +00:00
|
|
|
return NULL;
|
2020-12-15 00:41:03 +00:00
|
|
|
}
|
2020-07-07 02:33:54 +00:00
|
|
|
|
2021-02-10 00:18:13 +00:00
|
|
|
needs_stripe_new = !h->s;
|
|
|
|
if (needs_stripe_new) {
|
2020-12-09 18:39:30 +00:00
|
|
|
if (ec_new_stripe_alloc(c, h)) {
|
2021-02-10 00:18:13 +00:00
|
|
|
ret = -ENOMEM;
|
2020-12-15 00:41:03 +00:00
|
|
|
bch_err(c, "failed to allocate new stripe");
|
2021-02-10 00:18:13 +00:00
|
|
|
goto err;
|
2020-12-15 00:41:03 +00:00
|
|
|
}
|
|
|
|
|
2021-02-10 00:18:13 +00:00
|
|
|
if (ec_stripe_buf_init(&h->s->new_stripe, 0, h->blocksize))
|
2020-12-15 00:41:03 +00:00
|
|
|
BUG();
|
2020-12-09 18:39:30 +00:00
|
|
|
}
|
2020-06-30 18:44:19 +00:00
|
|
|
|
2021-02-10 00:18:13 +00:00
|
|
|
/*
|
|
|
|
* Try reserve a new stripe before reusing an
|
|
|
|
* existing stripe. This will prevent unnecessary
|
|
|
|
* read amplification during write oriented workloads.
|
|
|
|
*/
|
|
|
|
ret = 0;
|
|
|
|
if (!h->s->allocated && !h->s->res.sectors && !h->s->have_existing_stripe)
|
|
|
|
ret = __bch2_ec_stripe_head_reserve(c, h);
|
|
|
|
if (ret && needs_stripe_new)
|
|
|
|
ret = __bch2_ec_stripe_head_reuse(c, h);
|
2022-10-09 06:30:50 +00:00
|
|
|
if (ret) {
|
|
|
|
bch_err_ratelimited(c, "failed to get stripe: %s", bch2_err_str(ret));
|
2021-02-10 00:18:13 +00:00
|
|
|
goto err;
|
2022-10-09 06:30:50 +00:00
|
|
|
}
|
2020-07-09 22:31:51 +00:00
|
|
|
|
2021-02-10 00:18:13 +00:00
|
|
|
if (!h->s->allocated) {
|
2020-12-15 17:38:17 +00:00
|
|
|
ret = new_stripe_alloc_buckets(c, h, cl);
|
2021-02-10 00:18:13 +00:00
|
|
|
if (ret)
|
|
|
|
goto err;
|
2020-07-07 02:33:54 +00:00
|
|
|
|
|
|
|
h->s->allocated = true;
|
|
|
|
}
|
2021-02-10 00:18:13 +00:00
|
|
|
|
2020-07-07 02:33:54 +00:00
|
|
|
return h;
|
2021-02-10 00:18:13 +00:00
|
|
|
|
|
|
|
err:
|
|
|
|
bch2_ec_stripe_head_put(c, h);
|
2021-11-28 18:42:05 +00:00
|
|
|
return ERR_PTR(ret);
|
2020-07-07 02:33:54 +00:00
|
|
|
}
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
void bch2_ec_stop_dev(struct bch_fs *c, struct bch_dev *ca)
|
|
|
|
{
|
|
|
|
struct ec_stripe_head *h;
|
|
|
|
struct open_bucket *ob;
|
|
|
|
unsigned i;
|
|
|
|
|
2020-07-07 00:59:46 +00:00
|
|
|
mutex_lock(&c->ec_stripe_head_lock);
|
|
|
|
list_for_each_entry(h, &c->ec_stripe_head_list, list) {
|
2018-11-01 19:13:19 +00:00
|
|
|
|
|
|
|
mutex_lock(&h->lock);
|
|
|
|
if (!h->s)
|
|
|
|
goto unlock;
|
|
|
|
|
2021-01-19 04:26:42 +00:00
|
|
|
for (i = 0; i < h->s->new_stripe.key.v.nr_blocks; i++) {
|
|
|
|
if (!h->s->blocks[i])
|
|
|
|
continue;
|
|
|
|
|
|
|
|
ob = c->open_buckets + h->s->blocks[i];
|
2021-12-26 02:21:46 +00:00
|
|
|
if (ob->dev == ca->dev_idx)
|
2018-11-01 19:13:19 +00:00
|
|
|
goto found;
|
2021-01-19 04:26:42 +00:00
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
goto unlock;
|
|
|
|
found:
|
2020-07-07 00:59:46 +00:00
|
|
|
h->s->err = -EROFS;
|
|
|
|
ec_stripe_set_pending(c, h);
|
2018-11-01 19:13:19 +00:00
|
|
|
unlock:
|
|
|
|
mutex_unlock(&h->lock);
|
|
|
|
}
|
2020-07-07 00:59:46 +00:00
|
|
|
mutex_unlock(&c->ec_stripe_head_lock);
|
2018-11-01 19:13:19 +00:00
|
|
|
}
|
|
|
|
|
2021-01-14 21:19:23 +00:00
|
|
|
void bch2_stripes_heap_start(struct bch_fs *c)
|
|
|
|
{
|
|
|
|
struct genradix_iter iter;
|
|
|
|
struct stripe *m;
|
|
|
|
|
2021-12-05 04:07:33 +00:00
|
|
|
genradix_for_each(&c->stripes, iter, m)
|
2021-01-14 21:19:23 +00:00
|
|
|
if (m->alive)
|
|
|
|
bch2_stripes_heap_insert(c, m, iter.pos);
|
|
|
|
}
|
|
|
|
|
2021-12-26 01:07:00 +00:00
|
|
|
int bch2_stripes_read(struct bch_fs *c)
|
2018-11-26 01:53:51 +00:00
|
|
|
{
|
2021-12-26 01:07:00 +00:00
|
|
|
struct btree_trans trans;
|
|
|
|
struct btree_iter iter;
|
|
|
|
struct bkey_s_c k;
|
2021-11-29 21:38:27 +00:00
|
|
|
const struct bch_stripe *s;
|
|
|
|
struct stripe *m;
|
|
|
|
unsigned i;
|
2021-12-26 01:07:00 +00:00
|
|
|
int ret;
|
2019-07-12 21:08:32 +00:00
|
|
|
|
2021-12-26 01:07:00 +00:00
|
|
|
bch2_trans_init(&trans, c, 0, 0);
|
2021-11-29 21:38:27 +00:00
|
|
|
|
2021-12-26 01:07:00 +00:00
|
|
|
for_each_btree_key(&trans, iter, BTREE_ID_stripes, POS_MIN,
|
|
|
|
BTREE_ITER_PREFETCH, k, ret) {
|
|
|
|
if (k.k->type != KEY_TYPE_stripe)
|
|
|
|
continue;
|
2021-11-28 19:31:19 +00:00
|
|
|
|
2021-12-26 01:07:00 +00:00
|
|
|
ret = __ec_stripe_mem_alloc(c, k.k->p.offset, GFP_KERNEL);
|
|
|
|
if (ret)
|
|
|
|
break;
|
2021-11-29 21:38:27 +00:00
|
|
|
|
2021-12-26 01:07:00 +00:00
|
|
|
s = bkey_s_c_to_stripe(k).v;
|
2021-11-29 21:38:27 +00:00
|
|
|
|
2021-12-26 01:07:00 +00:00
|
|
|
m = genradix_ptr(&c->stripes, k.k->p.offset);
|
|
|
|
m->alive = true;
|
|
|
|
m->sectors = le16_to_cpu(s->sectors);
|
|
|
|
m->algorithm = s->algorithm;
|
|
|
|
m->nr_blocks = s->nr_blocks;
|
|
|
|
m->nr_redundant = s->nr_redundant;
|
|
|
|
m->blocks_nonempty = 0;
|
2021-11-29 21:38:27 +00:00
|
|
|
|
2021-12-26 01:07:00 +00:00
|
|
|
for (i = 0; i < s->nr_blocks; i++)
|
|
|
|
m->blocks_nonempty += !!stripe_blockcount_get(s, i);
|
2018-11-26 01:53:51 +00:00
|
|
|
|
2021-12-26 01:07:00 +00:00
|
|
|
spin_lock(&c->ec_stripes_heap_lock);
|
|
|
|
bch2_stripes_heap_update(c, m, k.k->p.offset);
|
|
|
|
spin_unlock(&c->ec_stripes_heap_lock);
|
|
|
|
}
|
|
|
|
bch2_trans_iter_exit(&trans, &iter);
|
2021-10-29 22:43:18 +00:00
|
|
|
|
|
|
|
bch2_trans_exit(&trans);
|
2021-12-26 01:07:00 +00:00
|
|
|
|
2020-05-24 18:06:10 +00:00
|
|
|
if (ret)
|
2019-04-17 19:49:28 +00:00
|
|
|
bch_err(c, "error reading stripes: %i", ret);
|
2018-11-26 01:53:51 +00:00
|
|
|
|
2020-05-24 18:06:10 +00:00
|
|
|
return ret;
|
2018-11-26 01:53:51 +00:00
|
|
|
}
|
|
|
|
|
2020-07-07 00:18:13 +00:00
|
|
|
void bch2_stripes_heap_to_text(struct printbuf *out, struct bch_fs *c)
|
|
|
|
{
|
|
|
|
ec_stripes_heap *h = &c->ec_stripes_heap;
|
|
|
|
struct stripe *m;
|
|
|
|
size_t i;
|
|
|
|
|
|
|
|
spin_lock(&c->ec_stripes_heap_lock);
|
2020-11-05 17:16:05 +00:00
|
|
|
for (i = 0; i < min_t(size_t, h->used, 20); i++) {
|
2021-12-05 04:07:33 +00:00
|
|
|
m = genradix_ptr(&c->stripes, h->data[i].idx);
|
2020-07-07 00:18:13 +00:00
|
|
|
|
2023-02-04 02:01:40 +00:00
|
|
|
prt_printf(out, "%zu %u/%u+%u\n", h->data[i].idx,
|
2020-07-07 00:18:13 +00:00
|
|
|
h->data[i].blocks_nonempty,
|
|
|
|
m->nr_blocks - m->nr_redundant,
|
|
|
|
m->nr_redundant);
|
|
|
|
}
|
|
|
|
spin_unlock(&c->ec_stripes_heap_lock);
|
|
|
|
}
|
|
|
|
|
2020-07-25 21:06:11 +00:00
|
|
|
void bch2_new_stripes_to_text(struct printbuf *out, struct bch_fs *c)
|
|
|
|
{
|
|
|
|
struct ec_stripe_head *h;
|
|
|
|
struct ec_stripe_new *s;
|
|
|
|
|
|
|
|
mutex_lock(&c->ec_stripe_head_lock);
|
|
|
|
list_for_each_entry(h, &c->ec_stripe_head_list, list) {
|
2023-02-04 02:01:40 +00:00
|
|
|
prt_printf(out, "target %u algo %u redundancy %u:\n",
|
2020-07-25 21:06:11 +00:00
|
|
|
h->target, h->algo, h->redundancy);
|
|
|
|
|
|
|
|
if (h->s)
|
2023-02-04 02:01:40 +00:00
|
|
|
prt_printf(out, "\tpending: blocks %u+%u allocated %u\n",
|
2021-01-19 04:26:42 +00:00
|
|
|
h->s->nr_data, h->s->nr_parity,
|
2020-07-25 21:06:11 +00:00
|
|
|
bitmap_weight(h->s->blocks_allocated,
|
2021-01-19 04:26:42 +00:00
|
|
|
h->s->nr_data));
|
2020-07-25 21:06:11 +00:00
|
|
|
}
|
|
|
|
mutex_unlock(&c->ec_stripe_head_lock);
|
|
|
|
|
|
|
|
mutex_lock(&c->ec_stripe_new_lock);
|
2020-08-05 03:12:49 +00:00
|
|
|
list_for_each_entry(s, &c->ec_stripe_new_list, list) {
|
2023-02-04 02:01:40 +00:00
|
|
|
prt_printf(out, "\tin flight: blocks %u+%u pin %u\n",
|
2021-01-19 04:26:42 +00:00
|
|
|
s->nr_data, s->nr_parity,
|
2020-07-25 21:06:11 +00:00
|
|
|
atomic_read(&s->pin));
|
|
|
|
}
|
|
|
|
mutex_unlock(&c->ec_stripe_new_lock);
|
|
|
|
}
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
void bch2_fs_ec_exit(struct bch_fs *c)
|
|
|
|
{
|
|
|
|
struct ec_stripe_head *h;
|
|
|
|
|
|
|
|
while (1) {
|
2020-07-07 00:59:46 +00:00
|
|
|
mutex_lock(&c->ec_stripe_head_lock);
|
|
|
|
h = list_first_entry_or_null(&c->ec_stripe_head_list,
|
2018-11-01 19:13:19 +00:00
|
|
|
struct ec_stripe_head, list);
|
|
|
|
if (h)
|
|
|
|
list_del(&h->list);
|
2020-07-07 00:59:46 +00:00
|
|
|
mutex_unlock(&c->ec_stripe_head_lock);
|
2018-11-01 19:13:19 +00:00
|
|
|
if (!h)
|
|
|
|
break;
|
|
|
|
|
|
|
|
BUG_ON(h->s);
|
|
|
|
kfree(h);
|
|
|
|
}
|
|
|
|
|
2020-07-07 00:59:46 +00:00
|
|
|
BUG_ON(!list_empty(&c->ec_stripe_new_list));
|
|
|
|
|
2018-11-01 19:13:19 +00:00
|
|
|
free_heap(&c->ec_stripes_heap);
|
2021-12-05 04:07:33 +00:00
|
|
|
genradix_free(&c->stripes);
|
2018-11-01 19:13:19 +00:00
|
|
|
bioset_exit(&c->ec_bioset);
|
|
|
|
}
|
|
|
|
|
2022-04-09 05:23:50 +00:00
|
|
|
void bch2_fs_ec_init_early(struct bch_fs *c)
|
2018-11-01 19:13:19 +00:00
|
|
|
{
|
2020-07-07 00:59:46 +00:00
|
|
|
INIT_WORK(&c->ec_stripe_create_work, ec_stripe_create_work);
|
2018-11-01 19:13:19 +00:00
|
|
|
INIT_WORK(&c->ec_stripe_delete_work, ec_stripe_delete_work);
|
2022-04-09 05:23:50 +00:00
|
|
|
}
|
2018-11-01 19:13:19 +00:00
|
|
|
|
2022-04-09 05:23:50 +00:00
|
|
|
int bch2_fs_ec_init(struct bch_fs *c)
|
|
|
|
{
|
2018-11-01 19:13:19 +00:00
|
|
|
return bioset_init(&c->ec_bioset, 1, offsetof(struct ec_bio, bio),
|
|
|
|
BIOSET_NEED_BVECS);
|
|
|
|
}
|