[Bugs] [Bug 1222409] nfs-ganesha: HA failover happens but I/O does not move ahead when volume has two mounts and I/O going on both mounts

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1222409



--- Comment #5 from Saurabh <saujain at redhat.com> ---
as per gfapi.log from nfs3,

[2015-05-18 14:08:22.308125] I
[client-handshake.c:187:client_set_lk_version_cbk] 0-vol2-client-7: Server lk
version = 1
[2015-05-18 14:08:22.319205] I [afr-common.c:1673:afr_local_discovery_cbk]
0-vol2-replicate-3: selecting local read_child vol2-client-7
[2015-05-18 14:08:22.319249] I [afr-common.c:1673:afr_local_discovery_cbk]
0-vol2-replicate-1: selecting local read_child vol2-client-3
[2015-05-18 14:08:22.319280] I [afr-common.c:1673:afr_local_discovery_cbk]
0-vol2-replicate-5: selecting local read_child vol2-client-11
[2015-05-18 14:08:22.319378] I [MSGID: 104041]
[glfs-resolve.c:843:__glfs_active_subvol] 0-vol2: switched to graph
6e667333-2d33-3437-372d-323031352d30 (0)
[2015-05-18 14:54:55.598244] W
[client-callback.c:65:client_cbk_cache_invalidation] 0-vol2-client-11: XDR
decode of cache_invalidation failed.
[2015-05-18 14:54:59.302948] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
[2015-05-18 14:54:59.303540] W [MSGID: 108008]
[afr-read-txn.c:237:afr_read_txn] 0-vol2-replicate-5: Unreadable subvolume -1
found with event generation 2. (Possible split-brain)
[2015-05-18 14:55:19.427492] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
[2015-05-18 14:56:00.410174] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
[2015-05-18 14:56:17.207031] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
The message "W [MSGID: 108008] [afr-read-txn.c:237:afr_read_txn]
0-vol2-replicate-5: Unreadable subvolume -1 found with event generation 2.
(Possible split-brain)" repeated 3 times between [2015-05-18 14:54:59.303540]
and [2015-05-18 14:56:17.219316]
[2015-05-18 14:56:54.106281] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
[2015-05-18 14:56:54.126517] W [MSGID: 108008]
[afr-read-txn.c:237:afr_read_txn] 0-vol2-replicate-5: Unreadable subvolume -1
found with event generation 2. (Possible split-brain)
[2015-05-18 14:56:54.283049] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
[2015-05-18 14:57:54.191362] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
[2015-05-18 14:58:08.095779] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
[2015-05-18 14:58:26.778498] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
The message "W [MSGID: 108008] [afr-read-txn.c:237:afr_read_txn]
0-vol2-replicate-5: Unreadable subvolume -1 found with event generation 2.
(Possible split-brain)" repeated 4 times between [2015-05-18 14:56:54.126517]
and [2015-05-18 14:58:26.780169]
[2015-05-18 14:58:39.474909] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
[2015-05-18 14:58:39.475858] W [MSGID: 108008]
[afr-read-txn.c:237:afr_read_txn] 0-vol2-replicate-5: Unreadable subvolume -1
found with event generation 2. (Possible split-brain)


from gfapi.log on nfs4,
The message "W [MSGID: 108008] [afr-read-txn.c:237:afr_read_txn]
0-vol2-replicate-5: Unreadable subvolume -1 found with event generation 12.
(Possible split-brain)" repeated 5 times between [2015-05-18 14:50:58.054198]
and [2015-05-18 14:52:26.797085]
[2015-05-18 14:53:13.243341] W
[client-callback.c:65:client_cbk_cache_invalidation] 0-vol2-client-10: XDR
decode of cache_invalidation failed.
[2015-05-18 14:53:17.390477] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-10: remote operation failed: Stale file handle
[2015-05-18 14:53:17.395473] W [MSGID: 108008]
[afr-read-txn.c:237:afr_read_txn] 0-vol2-replicate-5: Unreadable subvolume -1
found with event generation 12. (Possible split-brain)
[2015-05-18 14:53:17.481876] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
[2015-05-18 14:53:51.528836] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-11: remote operation failed: Stale file handle
[2015-05-18 14:53:56.245641] W [client-rpc-fops.c:506:client3_3_stat_cbk]
0-vol2-client-10: remote operation failed: Stale file handle

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