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libceph: pool deletion detection

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This adds the "map check" infrastructure for sending osdmap version
checks on CALC_TARGET_POOL_DNE and completing in-flight requests with
-ENOENT if the target pool doesn't exist or has just been deleted.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Ilya Dryomov 2016-04-28 16:07:27 +02:00
parent d0b19705e9
commit 4609245e26
2 changed files with 248 additions and 6 deletions
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6
include/linux/ceph/osd_client.h
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@ -151,6 +151,7 @@ struct ceph_osd_request_target {
struct ceph_osd_request {
u64 r_tid; /* unique for this client */
struct rb_node r_node;
struct rb_node r_mc_node; /* map check */
struct ceph_osd *r_osd;
struct ceph_osd_request_target r_t;
@ -191,6 +192,7 @@ struct ceph_osd_request {
int r_attempts;
struct ceph_eversion r_replay_version; /* aka reassert_version */
u32 r_last_force_resend;
u32 r_map_dne_bound;
struct ceph_osd_req_op r_ops[];
};
@ -218,6 +220,7 @@ struct ceph_osd_linger_request {
struct ceph_osd_request_target t;
u32 last_force_resend;
u32 map_dne_bound;
struct timespec mtime;
@ -225,6 +228,7 @@ struct ceph_osd_linger_request {
struct mutex lock;
struct rb_node node; /* osd */
struct rb_node osdc_node; /* osdc */
struct rb_node mc_node; /* map check */
struct list_head scan_item;
struct completion reg_commit_wait;
@ -257,6 +261,8 @@ struct ceph_osd_client {
atomic64_t last_tid; /* tid of last request */
u64 last_linger_id;
struct rb_root linger_requests; /* lingering requests */
struct rb_root map_checks;
struct rb_root linger_map_checks;
atomic_t num_requests;
atomic_t num_homeless;
struct delayed_work timeout_work;