[Gluster-users] Gluster 3.7.13 NFS Crash

Mahdi Adnan
2016-08-03T15:02:15Z

Hi,
 So i have updated to 3.7.14 and i still have the same issue with NFS.based on
what i have provided so far from logs and dumps do you think it's an NFS
issue ? should i switch to nfs-ganesha ?
the problem is, the current setup is used in a production environment, and
switching the mount point of  +50 VMs from native nfs to nfs-ganesha is not
going to be smooth and without downtime, so i really appreciate your thoughts on
this matter.


--



Respectfully

    Mahdi A. Mahdi



From: mahdi.adnan at outlook.com
To: kdhananj at redhat.com
Date: Tue, 2 Aug 2016 08:44:16 +0300
CC: gluster-users at gluster.org
Subject: Re: [Gluster-users] Gluster 3.7.13 NFS Crash




Hi,
The NFS just crashed again, latest bt;
(gdb) bt#0  0x00007f0b71a9f210 in pthread_spin_lock () from
/lib64/libpthread.so.0#1  0x00007f0b72c6fcd5 in fd_anonymous (inode=0x0) at
fd.c:804#2  0x00007f0b64ca5787 in shard_common_inode_write_do
(frame=0x7f0b707c062c, this=0x7f0b6002ac10) at shard.c:3716#3
0x00007f0b64ca5a53 in shard_common_inode_write_post_lookup_shards_handler
(frame=<optimized out>, this=<optimized out>) at shard.c:3769#4
0x00007f0b64c9eff5 in shard_common_lookup_shards_cbk (frame=0x7f0b707c062c,
cookie=<optimized out>, this=0x7f0b6002ac10, op_ret=0,
op_errno=<optimized out>, inode=<optimized out>, buf=0x7f0b51407640,
xdata=0x7f0b72f57648, postparent=0x7f0b514076b0) at shard.c:1601#5
0x00007f0b64efe141 in dht_lookup_cbk (frame=0x7f0b7075fcdc, cookie=<optimized
out>, this=<optimized out>, op_ret=0, op_errno=0, inode=0x7f0b5f1d1f58,
stbuf=0x7f0b51407640, xattr=0x7f0b72f57648, postparent=0x7f0b514076b0) at
dht-common.c:2174#6  0x00007f0b651871f3 in afr_lookup_done (frame=frame at
entry=0x7f0b7079a4c8, this=this at entry=0x7f0b60023ba0) at afr-common.c:1825#7
0x00007f0b65187b84 in afr_lookup_metadata_heal_check (frame=frame at
entry=0x7f0b7079a4c8, this=0x7f0b60023ba0, this at entry=0xca0bd88259f5a800)
at afr-common.c:2068#8  0x00007f0b6518834f in afr_lookup_entry_heal (frame=frame
at entry=0x7f0b7079a4c8, this=0xca0bd88259f5a800, this at entry=0x7f0b60023ba0)
at afr-common.c:2157#9  0x00007f0b6518867d in afr_lookup_cbk
(frame=0x7f0b7079a4c8, cookie=<optimized out>, this=0x7f0b60023ba0,
op_ret=<optimized out>,     op_errno=<optimized out>,
inode=<optimized out>, buf=0x7f0b564e9940, xdata=0x7f0b72f708c8,
postparent=0x7f0b564e99b0) at afr-common.c:2205#10 0x00007f0b653d6e42 in
client3_3_lookup_cbk (req=<optimized out>, iov=<optimized out>,
count=<optimized out>, myframe=0x7f0b7076354c)    at
client-rpc-fops.c:2981#11 0x00007f0b72a00a30 in rpc_clnt_handle_reply (clnt=clnt
at entry=0x7f0b603393c0, pollin=pollin at entry=0x7f0b50c1c2d0) at
rpc-clnt.c:764#12 0x00007f0b72a00cef in rpc_clnt_notify (trans=<optimized
out>, mydata=0x7f0b603393f0, event=<optimized out>,
data=0x7f0b50c1c2d0) at rpc-clnt.c:925#13 0x00007f0b729fc7c3 in
rpc_transport_notify (this=this at entry=0x7f0b60349040, event=event at
entry=RPC_TRANSPORT_MSG_RECEIVED, data=data at entry=0x7f0b50c1c2d0)    at
rpc-transport.c:546#14 0x00007f0b678c39a4 in socket_event_poll_in (this=this at
entry=0x7f0b60349040) at socket.c:2353#15 0x00007f0b678c65e4 in
socket_event_handler (fd=fd at entry=29, idx=idx at entry=17,
data=0x7f0b60349040, poll_in=1, poll_out=0, poll_err=0) at socket.c:2466#16
0x00007f0b72ca0f7a in event_dispatch_epoll_handler (event=0x7f0b564e9e80,
event_pool=0x7f0b7349bf20) at event-epoll.c:575#17 event_dispatch_epoll_worker
(data=0x7f0b60152d40) at event-epoll.c:678#18 0x00007f0b71a9adc5 in start_thread
() from /lib64/libpthread.so.0#19 0x00007f0b713dfced in clone () from
/lib64/libc.so.6


--



Respectfully

    Mahdi A. Mahdi

From: mahdi.adnan at outlook.com
To: kdhananj at redhat.com
Date: Mon, 1 Aug 2016 16:31:50 +0300
CC: gluster-users at gluster.org
Subject: Re: [Gluster-users] Gluster 3.7.13 NFS Crash




Many thanks,
here's the results;

(gdb) p cur_block$15 = 4088(gdb) p last_block$16 = 4088(gdb) p
local->first_block$17 = 4087(gdb) p odirect$18 = _gf_false(gdb) p
fd->flags$19 = 2(gdb) p local->call_count$20 = 2

If you need more core dumps, i have several files i can upload.

--



Respectfully

    Mahdi A. Mahdi



From: kdhananj at redhat.com
Date: Mon, 1 Aug 2016 18:39:27 +0530
Subject: Re: [Gluster-users] Gluster 3.7.13 NFS Crash
To: mahdi.adnan at outlook.com
CC: gluster-users at gluster.org

Sorry I didn't make myself  clear. The reason I asked YOU to do it is
because i tried it on my system and im not getting the backtrace (it's all
question marks).

Attach the core to gdb.
At the gdb prompt, go to frame 2 by typing
(gdb) f 2

There, for each of the variables i asked you to get the values of, type p
followed by the variable name.
For instance, to get the value of the variable 'odirect', do this:

(gdb) p odirect

and gdb will print its value for you in response.

-Krutika

On Mon, Aug 1, 2016 at 4:55 PM, Mahdi Adnan <mahdi.adnan at outlook.com>
wrote:



Hi,
How to get the results of the below variables ? i cant get the results from gdb.



--



Respectfully

    Mahdi A. Mahdi



From: kdhananj at redhat.com
Date: Mon, 1 Aug 2016 15:51:38 +0530
Subject: Re: [Gluster-users] Gluster 3.7.13 NFS Crash
To: mahdi.adnan at outlook.com
CC: gluster-users at gluster.org

Could you also print and share the values of the following variables from the
backtrace please:

i. cur_block
ii. last_block
iii. local->first_block
iv. odirect
v. fd->flags
vi. local->call_count

-Krutika

On Sat, Jul 30, 2016 at 5:04 PM, Mahdi Adnan <mahdi.adnan at outlook.com>
wrote:



Hi,
I really appreciate if someone can help me fix my nfs crash, its happening a lot
and it's causing lots of issues to my VMs;the problem is every few hours the
native nfs crash and the volume become unavailable from the affected node unless
i restart glusterd.the volume is used by vmware esxi as a datastore for it's
VMs with the following options;

OS: CentOS 7.2Gluster: 3.7.13
Volume Name: vlm01Type: Distributed-ReplicateVolume ID:
eacd8248-dca3-4530-9aed-7714a5a114f2Status: StartedNumber of Bricks: 7 x 3 =
21Transport-type: tcpBricks:Brick1: gfs01:/bricks/b01/vlm01Brick2:
gfs02:/bricks/b01/vlm01Brick3: gfs03:/bricks/b01/vlm01Brick4:
gfs01:/bricks/b02/vlm01Brick5: gfs02:/bricks/b02/vlm01Brick6:
gfs03:/bricks/b02/vlm01Brick7: gfs01:/bricks/b03/vlm01Brick8:
gfs02:/bricks/b03/vlm01Brick9: gfs03:/bricks/b03/vlm01Brick10:
gfs01:/bricks/b04/vlm01Brick11: gfs02:/bricks/b04/vlm01Brick12:
gfs03:/bricks/b04/vlm01Brick13: gfs01:/bricks/b05/vlm01Brick14:
gfs02:/bricks/b05/vlm01Brick15: gfs03:/bricks/b05/vlm01Brick16:
gfs01:/bricks/b06/vlm01Brick17: gfs02:/bricks/b06/vlm01Brick18:
gfs03:/bricks/b06/vlm01Brick19: gfs01:/bricks/b07/vlm01Brick20:
gfs02:/bricks/b07/vlm01Brick21: gfs03:/bricks/b07/vlm01Options
Reconfigured:performance.readdir-ahead: offperformance.quick-read:
offperformance.read-ahead: offperformance.io-cache:
offperformance.stat-prefetch: offcluster.eager-lock: enablenetwork.remote-dio:
enablecluster.quorum-type: autocluster.server-quorum-type:
serverperformance.strict-write-ordering: onperformance.write-behind:
offcluster.data-self-heal-algorithm: fullcluster.self-heal-window-size:
128features.shard-block-size: 16MBfeatures.shard: onauth.allow:
192.168.221.50,192.168.221.51,192.168.221.52,192.168.221.56,192.168.208.130,192.168.208.131,192.168.208.132,192.168.208.89,192.168.208.85,192.168.208.208.86network.ping-timeout:
10

latest bt;

(gdb) bt #0  0x00007f196acab210 in pthread_spin_lock () from
/lib64/libpthread.so.0#1  0x00007f196be7bcd5 in fd_anonymous (inode=0x0) at
fd.c:804#2  0x00007f195deb1787 in shard_common_inode_write_do
(frame=0x7f19699f1164, this=0x7f195802ac10) at shard.c:3716#3
0x00007f195deb1a53 in shard_common_inode_write_post_lookup_shards_handler
(frame=<optimized out>, this=<optimized out>) at shard.c:3769#4
0x00007f195deaaff5 in shard_common_lookup_shards_cbk (frame=0x7f19699f1164,
cookie=<optimized out>, this=0x7f195802ac10, op_ret=0,
op_errno=<optimized out>, inode=<optimized out>, buf=0x7f194970bc40,
xdata=0x7f196c15451c, postparent=0x7f194970bcb0) at shard.c:1601#5
0x00007f195e10a141 in dht_lookup_cbk (frame=0x7f196998e7d4, cookie=<optimized
out>, this=<optimized out>, op_ret=0, op_errno=0, inode=0x7f195c532b18,
stbuf=0x7f194970bc40, xattr=0x7f196c15451c, postparent=0x7f194970bcb0) at
dht-common.c:2174#6  0x00007f195e3931f3 in afr_lookup_done (frame=frame at
entry=0x7f196997f8a4, this=this at entry=0x7f1958022a20) at afr-common.c:1825#7
0x00007f195e393b84 in afr_lookup_metadata_heal_check (frame=frame at
entry=0x7f196997f8a4, this=0x7f1958022a20, this at entry=0xe3a929e0b67fa500)
at afr-common.c:2068#8  0x00007f195e39434f in afr_lookup_entry_heal (frame=frame
at entry=0x7f196997f8a4, this=0xe3a929e0b67fa500, this at entry=0x7f1958022a20)
at afr-common.c:2157#9  0x00007f195e39467d in afr_lookup_cbk
(frame=0x7f196997f8a4, cookie=<optimized out>, this=0x7f1958022a20,
op_ret=<optimized out>,     op_errno=<optimized out>,
inode=<optimized out>, buf=0x7f195effa940, xdata=0x7f196c1853b0,
postparent=0x7f195effa9b0) at afr-common.c:2205#10 0x00007f195e5e2e42 in
client3_3_lookup_cbk (req=<optimized out>, iov=<optimized out>,
count=<optimized out>, myframe=0x7f196999952c)    at
client-rpc-fops.c:2981#11 0x00007f196bc0ca30 in rpc_clnt_handle_reply (clnt=clnt
at entry=0x7f19583adaf0, pollin=pollin at entry=0x7f195907f930) at
rpc-clnt.c:764#12 0x00007f196bc0ccef in rpc_clnt_notify (trans=<optimized
out>, mydata=0x7f19583adb20, event=<optimized out>,
data=0x7f195907f930) at rpc-clnt.c:925#13 0x00007f196bc087c3 in
rpc_transport_notify (this=this at entry=0x7f19583bd770, event=event at
entry=RPC_TRANSPORT_MSG_RECEIVED, data=data at entry=0x7f195907f930)    at
rpc-transport.c:546#14 0x00007f1960acf9a4 in socket_event_poll_in (this=this at
entry=0x7f19583bd770) at socket.c:2353#15 0x00007f1960ad25e4 in
socket_event_handler (fd=fd at entry=25, idx=idx at entry=14,
data=0x7f19583bd770, poll_in=1, poll_out=0, poll_err=0) at socket.c:2466#16
0x00007f196beacf7a in event_dispatch_epoll_handler (event=0x7f195effae80,
event_pool=0x7f196dbf5f20) at event-epoll.c:575#17 event_dispatch_epoll_worker
(data=0x7f196dc41e10) at event-epoll.c:678#18 0x00007f196aca6dc5 in start_thread
() from /lib64/libpthread.so.0#19 0x00007f196a5ebced in clone () from
/lib64/libc.so.6



nfs logs and the core dump can be found in the dropbox link
below;https://db.tt/rZrC9d7f


thanks in advance.Respectfully
Mahdi A. Mahdi



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