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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-25 02:09:42 +00:00
![Linus Torvalds](/assets/img/avatar_default.png)
- OSD/MDS latency and caps cache metrics infrastructure for the filesytem (Xiubo Li). Currently available through debugfs and will be periodically sent to the MDS in the future. - support for replica reads (balanced and localized reads) for rbd and the filesystem (myself). The default remains to always read from primary, users can opt-in with the new crush_location and read_from_replica options. Note that reading from replica is safe for general use only since Octopus. - support for RADOS allocation hint flags (myself). Currently used by rbd to propagate the compressible/incompressible hint given with the new compression_hint map option and ready for passing on more advanced hints, e.g. based on fadvise() from the filesystem. - support for efficient cross-quota-realm renames (Luis Henriques) - assorted cap handling improvements and cleanups, particularly untangling some of the locking (Jeff Layton) -----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAl7eZP0THGlkcnlvbW92 QGdtYWlsLmNvbQAKCRBKf944AhHziwJDB/98bH+dsJidUkRctVerX933DvgmRGva sIxR0otqCK2zlucKSy8R8awbhVQ2lz4DQm9vrlwFQHBjZqXnrMzDG4rd/PukmKap l8DjHRgEsH698zjwDlyyz7/1ZqOOUcCKr5fly3Erqr92yWGoy2ve76LtTKgB5jnv wdwMk5v/NBWoxZ3Q1cvexbCtc60l0FCSH4FnH7NtT8eR9zCmL9vlpZWdjKi+U5em 6tTONuSq+0F4a9eXEv6QHEjRjkRo1WlttGdK3bX7mXD4O22TslgKg9hYsVoQVTiW Cc9n6Pggv2tbUnPgn/x342W26QyMgcoHCzrYPR7w0JrU61TzBewxqfpg =4fqQ -----END PGP SIGNATURE----- Merge tag 'ceph-for-5.8-rc1' of git://github.com/ceph/ceph-client Pull ceph updates from Ilya Dryomov: "The highlights are: - OSD/MDS latency and caps cache metrics infrastructure for the filesytem (Xiubo Li). Currently available through debugfs and will be periodically sent to the MDS in the future. - support for replica reads (balanced and localized reads) for rbd and the filesystem (myself). The default remains to always read from primary, users can opt-in with the new crush_location and read_from_replica options. Note that reading from replica is safe for general use only since Octopus. - support for RADOS allocation hint flags (myself). Currently used by rbd to propagate the compressible/incompressible hint given with the new compression_hint map option and ready for passing on more advanced hints, e.g. based on fadvise() from the filesystem. - support for efficient cross-quota-realm renames (Luis Henriques) - assorted cap handling improvements and cleanups, particularly untangling some of the locking (Jeff Layton)" * tag 'ceph-for-5.8-rc1' of git://github.com/ceph/ceph-client: (29 commits) rbd: compression_hint option libceph: support for alloc hint flags libceph: read_from_replica option libceph: support for balanced and localized reads libceph: crush_location infrastructure libceph: decode CRUSH device/bucket types and names libceph: add non-asserting rbtree insertion helper ceph: skip checking caps when session reconnecting and releasing reqs ceph: make sure mdsc->mutex is nested in s->s_mutex to fix dead lock ceph: don't return -ESTALE if there's still an open file libceph, rbd: replace zero-length array with flexible-array ceph: allow rename operation under different quota realms ceph: normalize 'delta' parameter usage in check_quota_exceeded ceph: ceph_kick_flushing_caps needs the s_mutex ceph: request expedited service on session's last cap flush ceph: convert mdsc->cap_dirty to a per-session list ceph: reset i_requested_max_size if file write is not wanted ceph: throw a warning if we destroy session with mutex still locked ceph: fix potential race in ceph_check_caps ceph: document what protects i_dirty_item and i_flushing_item ...
882 lines
22 KiB
C
882 lines
22 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <linux/ceph/ceph_debug.h>
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#include <linux/backing-dev.h>
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#include <linux/ctype.h>
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#include <linux/fs.h>
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#include <linux/inet.h>
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#include <linux/in6.h>
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#include <linux/key.h>
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#include <keys/ceph-type.h>
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#include <linux/module.h>
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#include <linux/mount.h>
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#include <linux/nsproxy.h>
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#include <linux/fs_parser.h>
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#include <linux/sched.h>
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#include <linux/sched/mm.h>
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#include <linux/seq_file.h>
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#include <linux/slab.h>
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#include <linux/statfs.h>
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#include <linux/string.h>
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#include <linux/vmalloc.h>
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#include <linux/ceph/ceph_features.h>
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#include <linux/ceph/libceph.h>
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#include <linux/ceph/debugfs.h>
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#include <linux/ceph/decode.h>
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#include <linux/ceph/mon_client.h>
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#include <linux/ceph/auth.h>
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#include "crypto.h"
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/*
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* Module compatibility interface. For now it doesn't do anything,
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* but its existence signals a certain level of functionality.
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*
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* The data buffer is used to pass information both to and from
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* libceph. The return value indicates whether libceph determines
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* it is compatible with the caller (from another kernel module),
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* given the provided data.
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*
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* The data pointer can be null.
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*/
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bool libceph_compatible(void *data)
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{
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return true;
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}
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EXPORT_SYMBOL(libceph_compatible);
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static int param_get_supported_features(char *buffer,
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const struct kernel_param *kp)
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{
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return sprintf(buffer, "0x%llx", CEPH_FEATURES_SUPPORTED_DEFAULT);
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}
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static const struct kernel_param_ops param_ops_supported_features = {
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.get = param_get_supported_features,
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};
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module_param_cb(supported_features, ¶m_ops_supported_features, NULL,
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0444);
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const char *ceph_msg_type_name(int type)
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{
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switch (type) {
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case CEPH_MSG_SHUTDOWN: return "shutdown";
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case CEPH_MSG_PING: return "ping";
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case CEPH_MSG_AUTH: return "auth";
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case CEPH_MSG_AUTH_REPLY: return "auth_reply";
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case CEPH_MSG_MON_MAP: return "mon_map";
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case CEPH_MSG_MON_GET_MAP: return "mon_get_map";
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case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe";
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case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack";
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case CEPH_MSG_STATFS: return "statfs";
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case CEPH_MSG_STATFS_REPLY: return "statfs_reply";
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case CEPH_MSG_MON_GET_VERSION: return "mon_get_version";
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case CEPH_MSG_MON_GET_VERSION_REPLY: return "mon_get_version_reply";
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case CEPH_MSG_MDS_MAP: return "mds_map";
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case CEPH_MSG_FS_MAP_USER: return "fs_map_user";
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case CEPH_MSG_CLIENT_SESSION: return "client_session";
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case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect";
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case CEPH_MSG_CLIENT_REQUEST: return "client_request";
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case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward";
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case CEPH_MSG_CLIENT_REPLY: return "client_reply";
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case CEPH_MSG_CLIENT_CAPS: return "client_caps";
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case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release";
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case CEPH_MSG_CLIENT_QUOTA: return "client_quota";
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case CEPH_MSG_CLIENT_SNAP: return "client_snap";
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case CEPH_MSG_CLIENT_LEASE: return "client_lease";
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case CEPH_MSG_POOLOP_REPLY: return "poolop_reply";
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case CEPH_MSG_POOLOP: return "poolop";
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case CEPH_MSG_MON_COMMAND: return "mon_command";
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case CEPH_MSG_MON_COMMAND_ACK: return "mon_command_ack";
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case CEPH_MSG_OSD_MAP: return "osd_map";
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case CEPH_MSG_OSD_OP: return "osd_op";
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case CEPH_MSG_OSD_OPREPLY: return "osd_opreply";
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case CEPH_MSG_WATCH_NOTIFY: return "watch_notify";
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case CEPH_MSG_OSD_BACKOFF: return "osd_backoff";
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default: return "unknown";
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}
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}
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EXPORT_SYMBOL(ceph_msg_type_name);
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/*
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* Initially learn our fsid, or verify an fsid matches.
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*/
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int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid)
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{
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if (client->have_fsid) {
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if (ceph_fsid_compare(&client->fsid, fsid)) {
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pr_err("bad fsid, had %pU got %pU",
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&client->fsid, fsid);
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return -1;
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}
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} else {
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memcpy(&client->fsid, fsid, sizeof(*fsid));
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}
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return 0;
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}
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EXPORT_SYMBOL(ceph_check_fsid);
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static int strcmp_null(const char *s1, const char *s2)
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{
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if (!s1 && !s2)
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return 0;
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if (s1 && !s2)
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return -1;
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if (!s1 && s2)
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return 1;
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return strcmp(s1, s2);
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}
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int ceph_compare_options(struct ceph_options *new_opt,
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struct ceph_client *client)
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{
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struct ceph_options *opt1 = new_opt;
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struct ceph_options *opt2 = client->options;
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int ofs = offsetof(struct ceph_options, mon_addr);
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int i;
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int ret;
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/*
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* Don't bother comparing options if network namespaces don't
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* match.
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*/
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if (!net_eq(current->nsproxy->net_ns, read_pnet(&client->msgr.net)))
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return -1;
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ret = memcmp(opt1, opt2, ofs);
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if (ret)
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return ret;
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ret = strcmp_null(opt1->name, opt2->name);
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if (ret)
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return ret;
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if (opt1->key && !opt2->key)
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return -1;
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if (!opt1->key && opt2->key)
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return 1;
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if (opt1->key && opt2->key) {
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if (opt1->key->type != opt2->key->type)
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return -1;
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if (opt1->key->created.tv_sec != opt2->key->created.tv_sec)
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return -1;
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if (opt1->key->created.tv_nsec != opt2->key->created.tv_nsec)
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return -1;
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if (opt1->key->len != opt2->key->len)
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return -1;
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if (opt1->key->key && !opt2->key->key)
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return -1;
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if (!opt1->key->key && opt2->key->key)
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return 1;
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if (opt1->key->key && opt2->key->key) {
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ret = memcmp(opt1->key->key, opt2->key->key, opt1->key->len);
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if (ret)
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return ret;
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}
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}
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ret = ceph_compare_crush_locs(&opt1->crush_locs, &opt2->crush_locs);
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if (ret)
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return ret;
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/* any matching mon ip implies a match */
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for (i = 0; i < opt1->num_mon; i++) {
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if (ceph_monmap_contains(client->monc.monmap,
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&opt1->mon_addr[i]))
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return 0;
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}
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return -1;
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}
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EXPORT_SYMBOL(ceph_compare_options);
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/*
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* kvmalloc() doesn't fall back to the vmalloc allocator unless flags are
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* compatible with (a superset of) GFP_KERNEL. This is because while the
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* actual pages are allocated with the specified flags, the page table pages
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* are always allocated with GFP_KERNEL.
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*
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* ceph_kvmalloc() may be called with GFP_KERNEL, GFP_NOFS or GFP_NOIO.
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*/
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void *ceph_kvmalloc(size_t size, gfp_t flags)
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{
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void *p;
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if ((flags & (__GFP_IO | __GFP_FS)) == (__GFP_IO | __GFP_FS)) {
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p = kvmalloc(size, flags);
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} else if ((flags & (__GFP_IO | __GFP_FS)) == __GFP_IO) {
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unsigned int nofs_flag = memalloc_nofs_save();
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p = kvmalloc(size, GFP_KERNEL);
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memalloc_nofs_restore(nofs_flag);
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} else {
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unsigned int noio_flag = memalloc_noio_save();
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p = kvmalloc(size, GFP_KERNEL);
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memalloc_noio_restore(noio_flag);
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}
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return p;
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}
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static int parse_fsid(const char *str, struct ceph_fsid *fsid)
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{
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int i = 0;
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char tmp[3];
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int err = -EINVAL;
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int d;
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dout("parse_fsid '%s'\n", str);
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tmp[2] = 0;
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while (*str && i < 16) {
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if (ispunct(*str)) {
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str++;
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continue;
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}
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if (!isxdigit(str[0]) || !isxdigit(str[1]))
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break;
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tmp[0] = str[0];
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tmp[1] = str[1];
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if (sscanf(tmp, "%x", &d) < 1)
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break;
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fsid->fsid[i] = d & 0xff;
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i++;
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str += 2;
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}
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if (i == 16)
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err = 0;
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dout("parse_fsid ret %d got fsid %pU\n", err, fsid);
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return err;
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}
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/*
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* ceph options
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*/
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enum {
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Opt_osdtimeout,
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Opt_osdkeepalivetimeout,
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Opt_mount_timeout,
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Opt_osd_idle_ttl,
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Opt_osd_request_timeout,
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/* int args above */
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Opt_fsid,
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Opt_name,
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Opt_secret,
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Opt_key,
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Opt_ip,
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Opt_crush_location,
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Opt_read_from_replica,
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/* string args above */
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Opt_share,
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Opt_crc,
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Opt_cephx_require_signatures,
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Opt_cephx_sign_messages,
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Opt_tcp_nodelay,
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Opt_abort_on_full,
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};
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enum {
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Opt_read_from_replica_no,
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Opt_read_from_replica_balance,
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Opt_read_from_replica_localize,
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};
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static const struct constant_table ceph_param_read_from_replica[] = {
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{"no", Opt_read_from_replica_no},
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{"balance", Opt_read_from_replica_balance},
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{"localize", Opt_read_from_replica_localize},
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{}
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};
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static const struct fs_parameter_spec ceph_parameters[] = {
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fsparam_flag ("abort_on_full", Opt_abort_on_full),
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fsparam_flag_no ("cephx_require_signatures", Opt_cephx_require_signatures),
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fsparam_flag_no ("cephx_sign_messages", Opt_cephx_sign_messages),
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fsparam_flag_no ("crc", Opt_crc),
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fsparam_string ("crush_location", Opt_crush_location),
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fsparam_string ("fsid", Opt_fsid),
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fsparam_string ("ip", Opt_ip),
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fsparam_string ("key", Opt_key),
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fsparam_u32 ("mount_timeout", Opt_mount_timeout),
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fsparam_string ("name", Opt_name),
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fsparam_u32 ("osd_idle_ttl", Opt_osd_idle_ttl),
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fsparam_u32 ("osd_request_timeout", Opt_osd_request_timeout),
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fsparam_u32 ("osdkeepalive", Opt_osdkeepalivetimeout),
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__fsparam (fs_param_is_s32, "osdtimeout", Opt_osdtimeout,
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fs_param_deprecated, NULL),
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fsparam_enum ("read_from_replica", Opt_read_from_replica,
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ceph_param_read_from_replica),
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fsparam_string ("secret", Opt_secret),
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fsparam_flag_no ("share", Opt_share),
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fsparam_flag_no ("tcp_nodelay", Opt_tcp_nodelay),
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{}
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};
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struct ceph_options *ceph_alloc_options(void)
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{
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struct ceph_options *opt;
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opt = kzalloc(sizeof(*opt), GFP_KERNEL);
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if (!opt)
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return NULL;
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opt->crush_locs = RB_ROOT;
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opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr),
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GFP_KERNEL);
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if (!opt->mon_addr) {
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kfree(opt);
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return NULL;
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}
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opt->flags = CEPH_OPT_DEFAULT;
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opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT;
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opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT;
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opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT;
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opt->osd_request_timeout = CEPH_OSD_REQUEST_TIMEOUT_DEFAULT;
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return opt;
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}
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EXPORT_SYMBOL(ceph_alloc_options);
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void ceph_destroy_options(struct ceph_options *opt)
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{
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dout("destroy_options %p\n", opt);
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if (!opt)
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return;
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ceph_clear_crush_locs(&opt->crush_locs);
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kfree(opt->name);
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if (opt->key) {
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ceph_crypto_key_destroy(opt->key);
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kfree(opt->key);
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}
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kfree(opt->mon_addr);
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kfree(opt);
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}
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EXPORT_SYMBOL(ceph_destroy_options);
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/* get secret from key store */
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static int get_secret(struct ceph_crypto_key *dst, const char *name,
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struct p_log *log)
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{
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struct key *ukey;
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int key_err;
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int err = 0;
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struct ceph_crypto_key *ckey;
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ukey = request_key(&key_type_ceph, name, NULL);
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if (IS_ERR(ukey)) {
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/* request_key errors don't map nicely to mount(2)
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errors; don't even try, but still printk */
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key_err = PTR_ERR(ukey);
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switch (key_err) {
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case -ENOKEY:
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error_plog(log, "Failed due to key not found: %s",
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name);
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break;
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case -EKEYEXPIRED:
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error_plog(log, "Failed due to expired key: %s",
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name);
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break;
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case -EKEYREVOKED:
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error_plog(log, "Failed due to revoked key: %s",
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name);
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break;
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default:
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error_plog(log, "Failed due to key error %d: %s",
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key_err, name);
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}
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err = -EPERM;
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goto out;
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}
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ckey = ukey->payload.data[0];
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err = ceph_crypto_key_clone(dst, ckey);
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if (err)
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goto out_key;
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/* pass through, err is 0 */
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out_key:
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key_put(ukey);
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out:
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return err;
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}
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int ceph_parse_mon_ips(const char *buf, size_t len, struct ceph_options *opt,
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struct fc_log *l)
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{
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struct p_log log = {.prefix = "libceph", .log = l};
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int ret;
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/* ip1[:port1][,ip2[:port2]...] */
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ret = ceph_parse_ips(buf, buf + len, opt->mon_addr, CEPH_MAX_MON,
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&opt->num_mon);
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|
if (ret) {
|
|
error_plog(&log, "Failed to parse monitor IPs: %d", ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(ceph_parse_mon_ips);
|
|
|
|
int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
|
|
struct fc_log *l)
|
|
{
|
|
struct fs_parse_result result;
|
|
int token, err;
|
|
struct p_log log = {.prefix = "libceph", .log = l};
|
|
|
|
token = __fs_parse(&log, ceph_parameters, param, &result);
|
|
dout("%s fs_parse '%s' token %d\n", __func__, param->key, token);
|
|
if (token < 0)
|
|
return token;
|
|
|
|
switch (token) {
|
|
case Opt_ip:
|
|
err = ceph_parse_ips(param->string,
|
|
param->string + param->size,
|
|
&opt->my_addr,
|
|
1, NULL);
|
|
if (err) {
|
|
error_plog(&log, "Failed to parse ip: %d", err);
|
|
return err;
|
|
}
|
|
opt->flags |= CEPH_OPT_MYIP;
|
|
break;
|
|
|
|
case Opt_fsid:
|
|
err = parse_fsid(param->string, &opt->fsid);
|
|
if (err) {
|
|
error_plog(&log, "Failed to parse fsid: %d", err);
|
|
return err;
|
|
}
|
|
opt->flags |= CEPH_OPT_FSID;
|
|
break;
|
|
case Opt_name:
|
|
kfree(opt->name);
|
|
opt->name = param->string;
|
|
param->string = NULL;
|
|
break;
|
|
case Opt_secret:
|
|
ceph_crypto_key_destroy(opt->key);
|
|
kfree(opt->key);
|
|
|
|
opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
|
|
if (!opt->key)
|
|
return -ENOMEM;
|
|
err = ceph_crypto_key_unarmor(opt->key, param->string);
|
|
if (err) {
|
|
error_plog(&log, "Failed to parse secret: %d", err);
|
|
return err;
|
|
}
|
|
break;
|
|
case Opt_key:
|
|
ceph_crypto_key_destroy(opt->key);
|
|
kfree(opt->key);
|
|
|
|
opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
|
|
if (!opt->key)
|
|
return -ENOMEM;
|
|
return get_secret(opt->key, param->string, &log);
|
|
case Opt_crush_location:
|
|
ceph_clear_crush_locs(&opt->crush_locs);
|
|
err = ceph_parse_crush_location(param->string,
|
|
&opt->crush_locs);
|
|
if (err) {
|
|
error_plog(&log, "Failed to parse CRUSH location: %d",
|
|
err);
|
|
return err;
|
|
}
|
|
break;
|
|
case Opt_read_from_replica:
|
|
switch (result.uint_32) {
|
|
case Opt_read_from_replica_no:
|
|
opt->osd_req_flags &= ~(CEPH_OSD_FLAG_BALANCE_READS |
|
|
CEPH_OSD_FLAG_LOCALIZE_READS);
|
|
break;
|
|
case Opt_read_from_replica_balance:
|
|
opt->osd_req_flags |= CEPH_OSD_FLAG_BALANCE_READS;
|
|
opt->osd_req_flags &= ~CEPH_OSD_FLAG_LOCALIZE_READS;
|
|
break;
|
|
case Opt_read_from_replica_localize:
|
|
opt->osd_req_flags |= CEPH_OSD_FLAG_LOCALIZE_READS;
|
|
opt->osd_req_flags &= ~CEPH_OSD_FLAG_BALANCE_READS;
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
break;
|
|
|
|
case Opt_osdtimeout:
|
|
warn_plog(&log, "Ignoring osdtimeout");
|
|
break;
|
|
case Opt_osdkeepalivetimeout:
|
|
/* 0 isn't well defined right now, reject it */
|
|
if (result.uint_32 < 1 || result.uint_32 > INT_MAX / 1000)
|
|
goto out_of_range;
|
|
opt->osd_keepalive_timeout =
|
|
msecs_to_jiffies(result.uint_32 * 1000);
|
|
break;
|
|
case Opt_osd_idle_ttl:
|
|
/* 0 isn't well defined right now, reject it */
|
|
if (result.uint_32 < 1 || result.uint_32 > INT_MAX / 1000)
|
|
goto out_of_range;
|
|
opt->osd_idle_ttl = msecs_to_jiffies(result.uint_32 * 1000);
|
|
break;
|
|
case Opt_mount_timeout:
|
|
/* 0 is "wait forever" (i.e. infinite timeout) */
|
|
if (result.uint_32 > INT_MAX / 1000)
|
|
goto out_of_range;
|
|
opt->mount_timeout = msecs_to_jiffies(result.uint_32 * 1000);
|
|
break;
|
|
case Opt_osd_request_timeout:
|
|
/* 0 is "wait forever" (i.e. infinite timeout) */
|
|
if (result.uint_32 > INT_MAX / 1000)
|
|
goto out_of_range;
|
|
opt->osd_request_timeout =
|
|
msecs_to_jiffies(result.uint_32 * 1000);
|
|
break;
|
|
|
|
case Opt_share:
|
|
if (!result.negated)
|
|
opt->flags &= ~CEPH_OPT_NOSHARE;
|
|
else
|
|
opt->flags |= CEPH_OPT_NOSHARE;
|
|
break;
|
|
case Opt_crc:
|
|
if (!result.negated)
|
|
opt->flags &= ~CEPH_OPT_NOCRC;
|
|
else
|
|
opt->flags |= CEPH_OPT_NOCRC;
|
|
break;
|
|
case Opt_cephx_require_signatures:
|
|
if (!result.negated)
|
|
opt->flags &= ~CEPH_OPT_NOMSGAUTH;
|
|
else
|
|
opt->flags |= CEPH_OPT_NOMSGAUTH;
|
|
break;
|
|
case Opt_cephx_sign_messages:
|
|
if (!result.negated)
|
|
opt->flags &= ~CEPH_OPT_NOMSGSIGN;
|
|
else
|
|
opt->flags |= CEPH_OPT_NOMSGSIGN;
|
|
break;
|
|
case Opt_tcp_nodelay:
|
|
if (!result.negated)
|
|
opt->flags |= CEPH_OPT_TCP_NODELAY;
|
|
else
|
|
opt->flags &= ~CEPH_OPT_TCP_NODELAY;
|
|
break;
|
|
|
|
case Opt_abort_on_full:
|
|
opt->flags |= CEPH_OPT_ABORT_ON_FULL;
|
|
break;
|
|
|
|
default:
|
|
BUG();
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_of_range:
|
|
return inval_plog(&log, "%s out of range", param->key);
|
|
}
|
|
EXPORT_SYMBOL(ceph_parse_param);
|
|
|
|
int ceph_print_client_options(struct seq_file *m, struct ceph_client *client,
|
|
bool show_all)
|
|
{
|
|
struct ceph_options *opt = client->options;
|
|
size_t pos = m->count;
|
|
struct rb_node *n;
|
|
|
|
if (opt->name) {
|
|
seq_puts(m, "name=");
|
|
seq_escape(m, opt->name, ", \t\n\\");
|
|
seq_putc(m, ',');
|
|
}
|
|
if (opt->key)
|
|
seq_puts(m, "secret=<hidden>,");
|
|
|
|
if (!RB_EMPTY_ROOT(&opt->crush_locs)) {
|
|
seq_puts(m, "crush_location=");
|
|
for (n = rb_first(&opt->crush_locs); ; ) {
|
|
struct crush_loc_node *loc =
|
|
rb_entry(n, struct crush_loc_node, cl_node);
|
|
|
|
seq_printf(m, "%s:%s", loc->cl_loc.cl_type_name,
|
|
loc->cl_loc.cl_name);
|
|
n = rb_next(n);
|
|
if (!n)
|
|
break;
|
|
|
|
seq_putc(m, '|');
|
|
}
|
|
seq_putc(m, ',');
|
|
}
|
|
if (opt->osd_req_flags & CEPH_OSD_FLAG_BALANCE_READS) {
|
|
seq_puts(m, "read_from_replica=balance,");
|
|
} else if (opt->osd_req_flags & CEPH_OSD_FLAG_LOCALIZE_READS) {
|
|
seq_puts(m, "read_from_replica=localize,");
|
|
}
|
|
|
|
if (opt->flags & CEPH_OPT_FSID)
|
|
seq_printf(m, "fsid=%pU,", &opt->fsid);
|
|
if (opt->flags & CEPH_OPT_NOSHARE)
|
|
seq_puts(m, "noshare,");
|
|
if (opt->flags & CEPH_OPT_NOCRC)
|
|
seq_puts(m, "nocrc,");
|
|
if (opt->flags & CEPH_OPT_NOMSGAUTH)
|
|
seq_puts(m, "nocephx_require_signatures,");
|
|
if (opt->flags & CEPH_OPT_NOMSGSIGN)
|
|
seq_puts(m, "nocephx_sign_messages,");
|
|
if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0)
|
|
seq_puts(m, "notcp_nodelay,");
|
|
if (show_all && (opt->flags & CEPH_OPT_ABORT_ON_FULL))
|
|
seq_puts(m, "abort_on_full,");
|
|
|
|
if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT)
|
|
seq_printf(m, "mount_timeout=%d,",
|
|
jiffies_to_msecs(opt->mount_timeout) / 1000);
|
|
if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT)
|
|
seq_printf(m, "osd_idle_ttl=%d,",
|
|
jiffies_to_msecs(opt->osd_idle_ttl) / 1000);
|
|
if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT)
|
|
seq_printf(m, "osdkeepalivetimeout=%d,",
|
|
jiffies_to_msecs(opt->osd_keepalive_timeout) / 1000);
|
|
if (opt->osd_request_timeout != CEPH_OSD_REQUEST_TIMEOUT_DEFAULT)
|
|
seq_printf(m, "osd_request_timeout=%d,",
|
|
jiffies_to_msecs(opt->osd_request_timeout) / 1000);
|
|
|
|
/* drop redundant comma */
|
|
if (m->count != pos)
|
|
m->count--;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(ceph_print_client_options);
|
|
|
|
struct ceph_entity_addr *ceph_client_addr(struct ceph_client *client)
|
|
{
|
|
return &client->msgr.inst.addr;
|
|
}
|
|
EXPORT_SYMBOL(ceph_client_addr);
|
|
|
|
u64 ceph_client_gid(struct ceph_client *client)
|
|
{
|
|
return client->monc.auth->global_id;
|
|
}
|
|
EXPORT_SYMBOL(ceph_client_gid);
|
|
|
|
/*
|
|
* create a fresh client instance
|
|
*/
|
|
struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private)
|
|
{
|
|
struct ceph_client *client;
|
|
struct ceph_entity_addr *myaddr = NULL;
|
|
int err;
|
|
|
|
err = wait_for_random_bytes();
|
|
if (err < 0)
|
|
return ERR_PTR(err);
|
|
|
|
client = kzalloc(sizeof(*client), GFP_KERNEL);
|
|
if (client == NULL)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
client->private = private;
|
|
client->options = opt;
|
|
|
|
mutex_init(&client->mount_mutex);
|
|
init_waitqueue_head(&client->auth_wq);
|
|
client->auth_err = 0;
|
|
|
|
client->extra_mon_dispatch = NULL;
|
|
client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT;
|
|
client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT;
|
|
|
|
if (!ceph_test_opt(client, NOMSGAUTH))
|
|
client->required_features |= CEPH_FEATURE_MSG_AUTH;
|
|
|
|
/* msgr */
|
|
if (ceph_test_opt(client, MYIP))
|
|
myaddr = &client->options->my_addr;
|
|
|
|
ceph_messenger_init(&client->msgr, myaddr);
|
|
|
|
/* subsystems */
|
|
err = ceph_monc_init(&client->monc, client);
|
|
if (err < 0)
|
|
goto fail;
|
|
err = ceph_osdc_init(&client->osdc, client);
|
|
if (err < 0)
|
|
goto fail_monc;
|
|
|
|
return client;
|
|
|
|
fail_monc:
|
|
ceph_monc_stop(&client->monc);
|
|
fail:
|
|
ceph_messenger_fini(&client->msgr);
|
|
kfree(client);
|
|
return ERR_PTR(err);
|
|
}
|
|
EXPORT_SYMBOL(ceph_create_client);
|
|
|
|
void ceph_destroy_client(struct ceph_client *client)
|
|
{
|
|
dout("destroy_client %p\n", client);
|
|
|
|
atomic_set(&client->msgr.stopping, 1);
|
|
|
|
/* unmount */
|
|
ceph_osdc_stop(&client->osdc);
|
|
ceph_monc_stop(&client->monc);
|
|
ceph_messenger_fini(&client->msgr);
|
|
|
|
ceph_debugfs_client_cleanup(client);
|
|
|
|
ceph_destroy_options(client->options);
|
|
|
|
kfree(client);
|
|
dout("destroy_client %p done\n", client);
|
|
}
|
|
EXPORT_SYMBOL(ceph_destroy_client);
|
|
|
|
void ceph_reset_client_addr(struct ceph_client *client)
|
|
{
|
|
ceph_messenger_reset_nonce(&client->msgr);
|
|
ceph_monc_reopen_session(&client->monc);
|
|
ceph_osdc_reopen_osds(&client->osdc);
|
|
}
|
|
EXPORT_SYMBOL(ceph_reset_client_addr);
|
|
|
|
/*
|
|
* true if we have the mon map (and have thus joined the cluster)
|
|
*/
|
|
static bool have_mon_and_osd_map(struct ceph_client *client)
|
|
{
|
|
return client->monc.monmap && client->monc.monmap->epoch &&
|
|
client->osdc.osdmap && client->osdc.osdmap->epoch;
|
|
}
|
|
|
|
/*
|
|
* mount: join the ceph cluster, and open root directory.
|
|
*/
|
|
int __ceph_open_session(struct ceph_client *client, unsigned long started)
|
|
{
|
|
unsigned long timeout = client->options->mount_timeout;
|
|
long err;
|
|
|
|
/* open session, and wait for mon and osd maps */
|
|
err = ceph_monc_open_session(&client->monc);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
while (!have_mon_and_osd_map(client)) {
|
|
if (timeout && time_after_eq(jiffies, started + timeout))
|
|
return -ETIMEDOUT;
|
|
|
|
/* wait */
|
|
dout("mount waiting for mon_map\n");
|
|
err = wait_event_interruptible_timeout(client->auth_wq,
|
|
have_mon_and_osd_map(client) || (client->auth_err < 0),
|
|
ceph_timeout_jiffies(timeout));
|
|
if (err < 0)
|
|
return err;
|
|
if (client->auth_err < 0)
|
|
return client->auth_err;
|
|
}
|
|
|
|
pr_info("client%llu fsid %pU\n", ceph_client_gid(client),
|
|
&client->fsid);
|
|
ceph_debugfs_client_init(client);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(__ceph_open_session);
|
|
|
|
int ceph_open_session(struct ceph_client *client)
|
|
{
|
|
int ret;
|
|
unsigned long started = jiffies; /* note the start time */
|
|
|
|
dout("open_session start\n");
|
|
mutex_lock(&client->mount_mutex);
|
|
|
|
ret = __ceph_open_session(client, started);
|
|
|
|
mutex_unlock(&client->mount_mutex);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ceph_open_session);
|
|
|
|
int ceph_wait_for_latest_osdmap(struct ceph_client *client,
|
|
unsigned long timeout)
|
|
{
|
|
u64 newest_epoch;
|
|
int ret;
|
|
|
|
ret = ceph_monc_get_version(&client->monc, "osdmap", &newest_epoch);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (client->osdc.osdmap->epoch >= newest_epoch)
|
|
return 0;
|
|
|
|
ceph_osdc_maybe_request_map(&client->osdc);
|
|
return ceph_monc_wait_osdmap(&client->monc, newest_epoch, timeout);
|
|
}
|
|
EXPORT_SYMBOL(ceph_wait_for_latest_osdmap);
|
|
|
|
static int __init init_ceph_lib(void)
|
|
{
|
|
int ret = 0;
|
|
|
|
ceph_debugfs_init();
|
|
|
|
ret = ceph_crypto_init();
|
|
if (ret < 0)
|
|
goto out_debugfs;
|
|
|
|
ret = ceph_msgr_init();
|
|
if (ret < 0)
|
|
goto out_crypto;
|
|
|
|
ret = ceph_osdc_setup();
|
|
if (ret < 0)
|
|
goto out_msgr;
|
|
|
|
pr_info("loaded (mon/osd proto %d/%d)\n",
|
|
CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL);
|
|
|
|
return 0;
|
|
|
|
out_msgr:
|
|
ceph_msgr_exit();
|
|
out_crypto:
|
|
ceph_crypto_shutdown();
|
|
out_debugfs:
|
|
ceph_debugfs_cleanup();
|
|
return ret;
|
|
}
|
|
|
|
static void __exit exit_ceph_lib(void)
|
|
{
|
|
dout("exit_ceph_lib\n");
|
|
WARN_ON(!ceph_strings_empty());
|
|
|
|
ceph_osdc_cleanup();
|
|
ceph_msgr_exit();
|
|
ceph_crypto_shutdown();
|
|
ceph_debugfs_cleanup();
|
|
}
|
|
|
|
module_init(init_ceph_lib);
|
|
module_exit(exit_ceph_lib);
|
|
|
|
MODULE_AUTHOR("Sage Weil <sage@newdream.net>");
|
|
MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>");
|
|
MODULE_AUTHOR("Patience Warnick <patience@newdream.net>");
|
|
MODULE_DESCRIPTION("Ceph core library");
|
|
MODULE_LICENSE("GPL");
|