diff options
| author | David Howells <dhowells@redhat.com> | 2023-11-14 11:17:24 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2024-01-01 16:37:27 +0000 |
| commit | d3acd81ef916537f4f7321f3d7861f1950d5c304 (patch) | |
| tree | c69c7061b4c9666aa019cb326cc4bb4a80c20360 /fs/afs/internal.h | |
| parent | dd94888938f8fefc6ee29ef57560c1e87cc3e05e (diff) | |
afs: Don't leave DONTUSE/NEWREPSITE servers out of server list
Don't leave servers that are marked VLSF_DONTUSE or VLSF_NEWREPSITE out of
the server list for a volume; rather, mark DONTUSE ones excluded and mark
either NEWREPSITE excluded if the number of updated servers is <50% of the
usable servers or mark !NEWREPSITE excluded otherwise.
Mark the server list as a whole with a 3-state flag to indicate whether we
think the RW volume is being replicated to the RO volume, and, if so,
whether we should switch to using updated replication sites
(VLSF_NEWREPSITE) or stick with the old for now.
This processing is pushed up from the VLDB RPC reply parser to the code
that generates the server list from that information.
Doing this allows the old list to be kept with just the exclusion flags
replaced and to keep the server records pinned and maintained.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Diffstat (limited to 'fs/afs/internal.h')
| -rw-r--r-- | fs/afs/internal.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 5ae4ca999d65..3d90415c2527 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -515,6 +515,7 @@ struct afs_vldb_entry { #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ + u8 vlsf_flags[AFS_NMAXNSERVERS]; short error; u8 nr_servers; /* Number of server records */ u8 name_len; @@ -601,6 +602,12 @@ struct afs_server { spinlock_t probe_lock; }; +enum afs_ro_replicating { + AFS_RO_NOT_REPLICATING, /* Not doing replication */ + AFS_RO_REPLICATING_USE_OLD, /* Replicating; use old version */ + AFS_RO_REPLICATING_USE_NEW, /* Replicating; switch to new version */ +} __mode(byte); + /* * Replaceable volume server list. */ @@ -608,12 +615,15 @@ struct afs_server_entry { struct afs_server *server; struct afs_volume *volume; struct list_head slink; /* Link in server->volumes */ + unsigned long flags; +#define AFS_SE_EXCLUDED 0 /* Set if server is to be excluded in rotation */ }; struct afs_server_list { struct rcu_head rcu; refcount_t usage; bool attached; /* T if attached to servers */ + enum afs_ro_replicating ro_replicating; /* RW->RO update (probably) in progress */ unsigned char nr_servers; unsigned char preferred; /* Preferred server */ unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ |