[Gluster-users] Latest glusterfs 3.8.5 server not compatible with livbirt libgfapi access

[Prasanna Kalever]

Hi,

After our past two days of investigations, this is no longer a new/fresh bug :)

The cause for is double unref of fd introduced in 3.8.5 with [1]

We have thoroughly investigated on this, and the fix [2] is likely to
be coming in the next gluster update.

[1] http://review.gluster.org/#/c/15585
[2] http://review.gluster.org/#/c/15768/

--
Prasanna


On Thu, Nov 3, 2016 at 4:34 PM, Radu Radutiu <rradutiu at gmail.com> wrote:
> Hi,
>
> After updating glusterfs server to 3.8.5 (from Centos-gluster-3.8.repo) the
> KVM virtual machines (qemu-kvm-ev-2.3.0-31) that access storage using
> libgfapi are no longer able to start. The libvirt log file shows:
>
> [2016-11-02 14:26:41.864024] I [MSGID: 104045] [glfs-master.c:91:notify]
> 0-gfapi: New graph 73332d32-3937-3130-2d32-3031362d3131 (0) coming up
> [2016-11-02 14:26:41.864075] I [MSGID: 114020] [client.c:2356:notify]
> 0-testvol-client-0: parent translators are ready, attempting connect on
> transport
> [2016-11-02 14:26:41.882975] I [rpc-clnt.c:1947:rpc_clnt_reconfig]
> 0-testvol-client-0: changing port to 49152 (from 0)
> [2016-11-02 14:26:41.889362] I [MSGID: 114057]
> [client-handshake.c:1446:select_server_supported_programs]
> 0-testvol-client-0: Using Program GlusterFS 3.3, Num (1298437), Version
> (330)
> [2016-11-02 14:26:41.890001] I [MSGID: 114046]
> [client-handshake.c:1222:client_setvolume_cbk] 0-testvol-client-0: Connected
> to testvol-client-0, attached to remote volume '/data/brick1/testvol'.
> [2016-11-02 14:26:41.890035] I [MSGID: 114047]
> [client-handshake.c:1233:client_setvolume_cbk] 0-testvol-client-0: Server
> and Client lk-version numbers are not same, reopening the fds
> [2016-11-02 14:26:41.917990] I [MSGID: 114035]
> [client-handshake.c:201:client_set_lk_version_cbk] 0-testvol-client-0:
> Server lk version = 1
> [2016-11-02 14:26:41.919289] I [MSGID: 104041]
> [glfs-resolve.c:885:__glfs_active_subvol] 0-testvol: switched to graph
> 73332d32-3937-3130-2d32-3031362d3131 (0)
> [2016-11-02 14:26:41.922174] I [MSGID: 114021] [client.c:2365:notify]
> 0-testvol-client-0: current graph is no longer active, destroying rpc_client
> [2016-11-02 14:26:41.922269] I [MSGID: 114018]
> [client.c:2280:client_rpc_notify] 0-testvol-client-0: disconnected from
> testvol-client-0. Client process will keep trying to connect to glusterd
> until brick's port is available
> [2016-11-02 14:26:41.922592] I [MSGID: 101053]
> [mem-pool.c:617:mem_pool_destroy] 0-gfapi: size=84 max=1 total=1
> [2016-11-02 14:26:41.923044] I [MSGID: 101053]
> [mem-pool.c:617:mem_pool_destroy] 0-gfapi: size=188 max=2 total=2
> [2016-11-02 14:26:41.923419] I [MSGID: 101053]
> [mem-pool.c:617:mem_pool_destroy] 0-gfapi: size=140 max=2 total=2
> [2016-11-02 14:26:41.923442] I [MSGID: 101053]
> [mem-pool.c:617:mem_pool_destroy] 0-testvol-client-0: size=1324 max=2
> total=5
> [2016-11-02 14:26:41.923458] I [MSGID: 101053]
> [mem-pool.c:617:mem_pool_destroy] 0-testvol-dht: size=1148 max=0 total=0
> [2016-11-02 14:26:41.923546] I [MSGID: 101053]
> [mem-pool.c:617:mem_pool_destroy] 0-testvol-dht: size=3380 max=2 total=5
> [2016-11-02 14:26:41.923815] I [MSGID: 101053]
> [mem-pool.c:617:mem_pool_destroy] 0-testvol-read-ahead: size=188 max=0
> total=0
> [2016-11-02 14:26:41.923832] I [MSGID: 101053]
> [mem-pool.c:617:mem_pool_destroy] 0-testvol-readdir-ahead: size=60 max=0
> total=0
> [2016-11-02 14:26:41.923844] I [MSGID: 101053]
> [mem-pool.c:617:mem_pool_destroy] 0-testvol-io-cache: size=68 max=0 total=0
> [2016-11-02 14:26:41.923856] I [MSGID: 101053]
> [mem-pool.c:617:mem_pool_destroy] 0-testvol-io-cache: size=252 max=1 total=3
> [2016-11-02 14:26:41.923877] I [io-stats.c:3747:fini] 0-testvol: io-stats
> translator unloaded
> [2016-11-02 14:26:41.924191] I [MSGID: 101191]
> [event-epoll.c:659:event_dispatch_epoll_worker] 0-epoll: Exited thread with
> index 2
> [2016-11-02 14:26:41.924232] I [MSGID: 101191]
> [event-epoll.c:659:event_dispatch_epoll_worker] 0-epoll: Exited thread with
> index 1
> 2016-11-02T14:26:42.825041Z qemu-kvm: -drive
> file=gluster://s3/testvol/c7.img,if=none,id=drive-virtio-disk0,format=qcow2,cache=none:
> Could not read L1 table: Bad file descriptor
>
> The brick is available , runs on the same host  and mounted in another
> directory using fuse (to confirm that it is indeed fine).
> If I downgrade the gluster server to 3.8.4 everything works fine. Anyone has
> seen this or has any idea how to debug?
>
> Regards,
> Radu
>
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