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f2fs: split IO error injection according to RW 

This patch adds to support injecting error for write IO, this can simulate
IO error like fail_make_request or dm_flakey does.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2018-09-12 09:22:29 +08:00 committed by Jaegeuk Kim
parent 7c1a000d46
commit 6f5c2ed0a2
4 changed files with 14 additions and 5 deletions
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3
Documentation/filesystems/f2fs.txt
View File

@ -172,9 +172,10 @@ fault_type=%d Support configuring fault injection type, should be
FAULT_DIR_DEPTH 0x000000100
FAULT_EVICT_INODE 0x000000200
FAULT_TRUNCATE 0x000000400
FAULT_IO 0x000000800
FAULT_READ_IO 0x000000800
FAULT_CHECKPOINT 0x000001000
FAULT_DISCARD 0x000002000
FAULT_WRITE_IO 0x000004000
mode=%s Control block allocation mode which supports "adaptive"
and "lfs". In "lfs" mode, there should be no random
writes towards main area.

10
fs/f2fs/data.c
View File

@ -123,8 +123,9 @@ static bool f2fs_bio_post_read_required(struct bio *bio)
static void f2fs_read_end_io(struct bio *bio)
{
if (time_to_inject(F2FS_P_SB(bio_first_page_all(bio)), FAULT_IO)) {
f2fs_show_injection_info(FAULT_IO);
if (time_to_inject(F2FS_P_SB(bio_first_page_all(bio)),
FAULT_READ_IO)) {
f2fs_show_injection_info(FAULT_READ_IO);
bio->bi_status = BLK_STS_IOERR;
}
@ -145,6 +146,11 @@ static void f2fs_write_end_io(struct bio *bio)
struct bio_vec *bvec;
int i;
if (time_to_inject(sbi, FAULT_WRITE_IO)) {
f2fs_show_injection_info(FAULT_WRITE_IO);
bio->bi_status = BLK_STS_IOERR;
}
bio_for_each_segment_all(bvec, bio, i) {
struct page *page = bvec->bv_page;
enum count_type type = WB_DATA_TYPE(page);

3
fs/f2fs/f2fs.h
View File

@ -50,9 +50,10 @@ enum {
FAULT_DIR_DEPTH,
FAULT_EVICT_INODE,
FAULT_TRUNCATE,
FAULT_IO,
FAULT_READ_IO,
FAULT_CHECKPOINT,
FAULT_DISCARD,
FAULT_WRITE_IO,
FAULT_MAX,
};

3
fs/f2fs/super.c
View File

@ -50,9 +50,10 @@ char *f2fs_fault_name[FAULT_MAX] = {
[FAULT_DIR_DEPTH] = "too big dir depth",
[FAULT_EVICT_INODE] = "evict_inode fail",
[FAULT_TRUNCATE] = "truncate fail",
[FAULT_IO] = "IO error",
[FAULT_READ_IO] = "read IO error",
[FAULT_CHECKPOINT] = "checkpoint error",
[FAULT_DISCARD] = "discard error",
[FAULT_WRITE_IO] = "write IO error",
};
void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,