[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2013-07-04 Thread gergnz
FWIW, just did an upgrade on some systems.

All preices machines, all were running -39

Upgraded to -48, this bug appeared.

Rolled back the clients only to -39, bug disappeared.

Site is a semi heavy web service with 1 NFS server, and 2 NFS clients
running nginx/php.

Issue was seen almost immediately upon nginx/php starting up, lots of
threads got stuck, load went up due to high I/O wait.

fstab:
10.1.2.3:/www   /data/www   nfs defaults0 0
exports:
/data/shared
10.1.2.0/24(rw,fsid=0,insecure,no_subtree_check,async,no_root_squash)
/data/shared/www
10.1.2.0/24(rw,nohide,insecure,no_subtree_check,async,no_root_squash)

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2013-05-22 Thread Bryan Quigley
I was hoping for something we could reproduce at will without impacting
production machines.   If you can find a way to simulate the load to
cause this issue*, we can proceed.  If not,  I'm not sure we have
another way to proceed on this bug.

I'm going to run some of these tests myself, but you appear to have a
setup conducive to this bug.

*You can try something like iozone3, dbench, or the phoronix-test-suite.

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2013-05-21 Thread Bryan Quigley
@darylounet
Please tell us more about your setup.   On the server, /etc/exports, and on the 
client the output of fstab, etc.   Are you using kerberos encryption? 

How often does it happen?  Do you have to do something to casue it?
Can you reproduce it at will?

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2013-05-21 Thread Cyril Aknine
Ok, all my servers are VM hosted on AWS EC2.

I have one NFS server (called back) that I recently upgraded on Ubuntu 13.04 
with the saucy 3.9.2 kernel (I haven't tried 3.9.3 yet).
I have 1,n web server(s) (called front) that runs PHP files that read/write 
media and cache files on the NFS server. front servers actually scales up and 
down, according to CPU usage.

I can reproduce the bug at will as every time autoscaling adds at least
1 front server, I get the bug. So I have to block autoscaling to have
only one front server in order to work.

Actually I can't have only one server in production state, so I switched
back on NFSv3.

I don't use kerberos. Here is some configuration files :

root@back:~# cat /etc/default/nfs-kernel-server 
RPCNFSDCOUNT=8
RPCNFSDPRIORITY=0
RPCMOUNTDOPTS=--manage-gids
NEED_SVCGSSD=
RPCSVCGSSDOPTS=
RPCNFSDOPTS=

root@back:~# cat /etc/exports
/srv/exports*(rw,async,fsid=0,no_subtree_check,no_root_squash)
/srv/exports/data   *(rw,async,no_subtree_check,no_root_squash)

root@front:~# cat /etc/fstab
LABEL=cloudimg-rootfs   /ext4   defaults,noatime0   0
/dev/xvdf   /srv/apps   ext4defaults,noatime0   0
## This is the NFS mount ##
10.0.0.254:/data/srv/nfsnfs4
defaults,rsize=32768,wsize=32768,noatime0   0
###
/dev/xvdb   /mntautodefaults,noatime,nobootwait,comment=cloudconfig 
0   2

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2013-05-21 Thread Bryan Quigley
If you can distill it to an easy to rebuild setup that would be very
helpful (that isn't dependent on AWS). Does the issue happen if you
scale up even if there isn't load?  Or, in other words, is one of your
scripts or apps important for reproducing this issue?  If so, can it be
narrowed down to something you can share?

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2013-05-21 Thread Cyril Aknine
No, it happens only on production environment with high load. I think
that it's related to multiple concurrent writes by our software, eZ
Publish.

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2013-05-18 Thread Cyril Aknine
I'm running Ubuntu 13.04 for the NFS Server and Ubuntu 12.04.2 on NFS
clients, with the latest saucy kernel 3.9.2 for both clients  server.
I'm still having the issue :

2013-05-14 20:13:54.0   front   Warnkernel  front kernel: [16314892.359664] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:54.0   front   Warnkernel  front kernel: [16314892.376015] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:54.0   front   Warnkernel  front kernel: [16314892.392631] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:54.0   front   Warnkernel  front kernel: [16314892.411032] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:54.0   front   Warnkernel  front kernel: [16314892.442049] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:54.0   front   Warnkernel  front kernel: [16314892.463733] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:54.0   front   Warnkernel  front kernel: [16314892.463280] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:54.0   front   Warnkernel  front kernel: [16314892.483293] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:54.0   front   Warnkernel  front kernel: [16314892.512223] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:54.0   front   Warnkernel  front kernel: [16314892.526620] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [23047649.204043] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [23047649.241656] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [23047649.267490] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [23047649.276897] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [23047649.220605] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [23047649.258010] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [23047649.295832] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [23047649.748445] 
NFS: v4 server 10.0.0.254 returned a bad sequence-id error!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [23047649.747233] 
NFS: v4 server 10.0.0.254 returned a bad sequence-id error!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [23047649.748046] 
NFS: v4 server 10.0.0.254 returned a bad sequence-id error!
2013-05-14 20:13:20.0   front   Error   kernel  front kernel: [23047649.749241] 
NFS: nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
2013-05-14 20:13:20.0   front   Error   kernel  front kernel: [23047649.749622] 
NFS: nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [16314858.377681] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:20.0   front   Error   kernel  front kernel: [16314858.441052] 
NFS: nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [16314858.440648] 
NFS: v4 server 10.0.0.254 returned a bad sequence-id error!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [23047649.748834] 
NFS: v4 server 10.0.0.254 returned a bad sequence-id error!
2013-05-14 20:13:20.0   front   Warnkernel  front kernel: [16314858.414761] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:20.0   front   Error   kernel  front kernel: [16314858.441462] 
NFS: nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
2013-05-14 20:13:19.0   front   Warnkernel  front kernel: [23047649.150977] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:19.0   front   Warnkernel  front kernel: [23047649.185261] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:19.0   front   Warnkernel  front kernel: [23047649.162637] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:15.0   front   Warnkernel  front kernel: [23047644.226955] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:15.0   front   Warnkernel  front kernel: [23047644.205856] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:15.0   front   Warnkernel  front kernel: [23047644.217111] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:15.0   front   Warnkernel  front kernel: [23047644.256086] 
NFS: nfs4_reclaim_open_state: Lock reclaim failed!
2013-05-14 20:13:15.0   front   Warnkernel  front kernel: [23047644.239608] 
NFS: 

[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2013-05-08 Thread Bryan Quigley
The 3.9 kernel has been released and if you are still having this issue
please give it a try: http://kernel.ubuntu.com/~kernel-
ppa/mainline/v3.9.1-saucy/

** Changed in: linux (Ubuntu)
   Status: Confirmed = Incomplete

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2013-05-07 Thread Veit Kleeberger
** Changed in: linux (Ubuntu)
   Status: Triaged = Confirmed

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2013-04-10 Thread Bryan Quigley
The v3.9-rc6 kernel has some more fixes that appear to be related.
Could anyone try it?  Is anyone still experiencing this issue?

http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc6-raring/

Instructions are here:
https://wiki.ubuntu.com/Kernel/MainlineBuilds#Installing_Mainline_Kernels

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-11-07 Thread Joseph Salisbury
The v3.7-rc4 kernel is now available.  It would be great if you could
test this latest kernel, which can be downloaded from:

http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.7-rc4-raring/

Note that you need to install both the linux-image and linux-image-extra
packages.

Thanks in advance!

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-11-05 Thread Andreas Heinlein
Any news on this? We're experiencing exactly the same problems as described by 
Peter, except that the workaround doesn't work for us.
We have a lot of Ubuntu 10.04 LTS clients running with /home mounted through 
NFSv4, with a Debian 6.0 server. We also had a single test machine running 
12.04 for several months now without problems. Last friday, I upgraded a second 
machine and the described problems began. 
We also had a server crash on friday, where I'm not sure whether it is related. 
The server stopped with Out of memory and no killable processes left. 
Apparently, it started killing processes to free up memory. The logs say it was 
due to imapd claiming more memory, but that could well be wrong. What we also 
see on the server is that two out of four rpciod kernel threads are stuck in 
the 'D' state, which apparently also causes a permanent load level of at least 
2.0. It doesn't seem to have any real performance impact, though. These stuck 
threads are obviously resolved when you reboot the server, but return as soon 
as you fire up the 12.04 boxes.
We already had network cards configured by /etc/network/interfaces, so Peters 
workaround doesn't work for us. I have now removed the /home line from fstab 
and instead mount /home manually on these two boxes. The clientaddr field is 
now correct (was 0.0.0.0 before), and everything seems to work now.
That is still something that needs to be resolved quickly. I suspect there are 
some protocol incompatibilities here; we already went back on the server from 
kernel 3.2.0 (from Debian backports) to the official sqeeze kernel 2.6.32 
because we had problems with ever increasing load on the server. Maybe going 
again to 3.2.0 on the server would help now, since both client and server would 
then be running the same kernel version again. But I cannot upgrade all boxes 
to 12.04 beforehand just to test. I will try and set up a test environment and 
post the results.

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-05-21 Thread Peter Winterer
Since the nfs client-adress is correct, it still works for us with
four 12.04 boxes, no crashes and no error messages anymore. There are
probably serveral causes for the nfs4 reclaim error. Keep in mind, we
have a solaris 10 as nfs-Server ... maybe there is something wrong on
the server-side?

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-05-16 Thread coli
We don't use networkmanager but configure the interfaces through
/etc/network/interfaces all the time.. But we still have this problem.

I figured out, that autofs-mounts have the correct clientaddr set while
fstab mounts don't. Our fstab-mounts also have clientaddr=0.0.0.0. But
when I manually unmount them and remount them, they get the right
clientaddr but still the problem exists, at least we still have the
error-messages in dmesg shown.

I also found this redhat bugreport
https://bugzilla.redhat.com/show_bug.cgi?id=732748 which claims that the
problem is fixed with these patches:
http://article.gmane.org/gmane.linux.nfs/48705 .

I used kernel 3.3.6-030306-generic now but we still have the
nfs4_reclaim_open_state: Lock reclaim failed! messages in dmesg but no
hang so far..


Does your workaround still work for you? Do you had any hangs or the 
error-messages in dmesg anymore?

Does anyone know what the clientaddr-field is used for?

** Bug watch added: Red Hat Bugzilla #732748
   https://bugzilla.redhat.com/show_bug.cgi?id=732748

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-05-10 Thread Peter Winterer
I experienced no server side crashes.  This is really a crazy bug! 
We have 25 Linux Boxes with 10.04 LTS everything works fine. I start to upgrade 
one by one. Still working when i start to upgrade the first box to 12.04. 
However, after upgrading the second one, both 12.05 boxes  crashes with the 
errors described above. 
The really bad workaround ist to use nfsv3 on 12.04, that is working for us. 

Maybe it relates to this bug, however the fix ist not working for us:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/974664

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-05-10 Thread Peter Winterer
After rebooting the ubuntu 12.04 box and login to system, I found the following:
the mount command shows: 
server:/path on /home/user type nfs4 
(rw,nosuid,proto=tcp,port=2049,sloppy,addr=IP ,clientaddr=0.0.0.0)  
clientaddr=0.0.0.0 is definitively wrong. 
To correct this, I had to disable  networkmanager from  managing the network 
interface.
I added  to  the /etc/network/interfaces the following:  
..
iface eth0 inet dhcp
auto eth0
..
and after rebooting, the mount command shows the right clientaddr:
server:/path on /home/user type nfs4 
(rw,nosuid,proto=tcp,port=2049,sloppy,addr=IP ,clientaddr=IP)

so far, it workss without crashes an error messages.

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-05-09 Thread coli
Maybe related to this problem we experienced a crash of our fileserver.
Can you also confirm this on your setup? Because we aren't fully sure if
the one problem is related to the other.


In the meantime, as we couldn't solve this problem, were using NFS3 on
oneiric without problems..

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-05-08 Thread Peter Winterer
Are there any news about this issue?.
After upgrading from ubuntu 10.04  to  ubuntu 12.04 precise, we are getting the 
same errors like it is described in this bug-report. We have an solaris nfs 
server and serveral Ubuntu box's as nfsv4 client. This worked fine with 10.04, 
with 12.04  we are getting these errors:


[  308.35] NFS: nfs4_reclaim_open_state: Lock reclaim failed!
 [  309.139900] nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
 [  309.140185] nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
 [  309.882763] NFS: v4 server returned a bad sequence-id error on an 
unconfirmed sequence ec5be010!
 [  311.029716] BUG: unable to handle kernel NULL pointer dereference at 
00a4
 [  311.029800] IP: [] nfs4_alloc_lockdata+0x1c/0x1c0 [nfs]
 [  311.029882] *pdpt = 2ce7f001 *pde = 
 [  311.029951] Oops:  [#1] SMP
 [  311.029980] Modules linked in: autofs4 rfcomm bnep bluetooth parport_pc 
ppdev binfmt_misc nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc joydev 
snd_hda_codec_realtek snd_hda_intel snd_hda_codec radeon snd_hwdep snd_pcm 
snd_seq_midi snd_rawmidi snd_seq_midi_event psmouse snd_seq snd_timer serio_raw 
snd_seq_device ttm hid_logitech_dj drm_kms_helper drm snd soundcore 
snd_page_alloc i2c_algo_bit mac_hid mei(C) lp parport usbhid hid e1000e
 [  311.030353]
 [  311.030367] Pid: 3312, comm: xxx.yyy.zzz.ff- Tainted: G C   
3.2.0-24-generic-pae #37-Ubuntu 
 [  311.030475] EIP: 0060:[f88c0b6c] EFLAGS: 00010282 CPU: 1
 [  311.030525] EIP is at nfs4_alloc_lockdata+0x1c/0x1c0 [nfs]
 [  311.030563] EAX: 0088 EBX: f39b69a0 ECX: ec5be700 EDX: 0050
 [  311.030611] ESI: ec5be700 EDI: 0006 EBP: ec75be88 ESP: ec75be70
 [  311.030658]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
 [  311.030700] Process xxx.yyy.zzz.ff- (pid: 3312, ti=ec75a000 task=ec45d860 
task.ti=ec75a000)
 [  311.030761] Stack:
 [  311.030781]  ec692e80 f39b69a0 ed839480 f39b69a0 0002 0006 ec75bed4 
f88c0daa
 [  311.030853]  0050 f7402580 ec75bec8  f39b1b00 ec75beb8 f88d2898 

 [  311.030930]  edab8f60 0001 f88dbeb8   ed839480 ee192c80 
f39b69a0
 [  311.031009] Call Trace:
 [  311.031041]  [f88c0daa] _nfs4_do_setlk.isra.37+0x9a/0x1f0 [nfs]
 [  311.031096]  [f88c12ba] nfs4_lock_expired+0x6a/0xb0 [nfs]
 [  311.031148]  [f88c9ab6] nfs4_reclaim_locks.isra.17+0x86/0x140 [nfs]
 [  311.031200]  [f88a82af] ? put_nfs_open_context+0xf/0x20 [nfs]
 [  311.031253]  [f88ca85a] nfs4_reclaim_open_state+0x8a/0x280 [nfs]
 [  311.031308]  [f88cab10] nfs4_do_reclaim+0xc0/0x100 [nfs]
 [  311.031367]  [f88cad00] nfs4_state_manager+0x1b0/0x2a0 [nfs]
 [  311.031417]  [c106b817] ? recalc_sigpending+0x17/0x40
 [  311.031470]  [f88cadf0] ? nfs4_state_manager+0x2a0/0x2a0 [nfs]
 [  311.031530]  [f88cae0c] nfs4_run_state_manager+0x1c/0x30 [nfs]
 [  311.031573]  [c107956d] kthread+0x6d/0x80
 [  311.031609]  [c1079500] ? flush_kthread_worker+0x80/0x80
 [  311.031655]  [c15af6be] kernel_thread_helper+0x6/0x10
 [  311.031693] Code: c7 04 24 e6 4f 8d f8 e8 b8 1b cd c8 eb a8 90 55 89 e5 57 
56 53 83 ec 0c 3e 8d 74 26 00 89 45 ec 8b 41 08 89 ce 89 55 e8 8b 55 08 8b 78 
1c 80 ce 80 f6 c2 01 8b 47 1c 8b 80 d0 01 00 00 89 45 f0
 [  311.031990] EIP: [f88c0b6c] nfs4_alloc_lockdata+0x1c/0x1c0 [nfs] SS:ESP 
0068:ec75be70
 [  311.032061] CR2: 00a4
 [  311.044208] ---[ end trace ff67295de72dfb75 ]---

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  nfs4_reclaim_locks: unhandled error crashes applications and creates
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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-03-07 Thread Joseph Salisbury
** Changed in: linux (Ubuntu)
   Status: Confirmed = Triaged

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-22 Thread Joseph Salisbury
This issue appears to be an upstream bug, since you tested the latest
upstream kernel.  Would it be possible for you to open an upstream bug
report at bugzilla.kernel.org [1]?  That will allow the upstream
Developers to examine the issue, and may provide a quicker resolution to
the bug.

If you are comfortable with opening a bug upstream, It would be great if
you can report back the upstream bug number in this bug report.  That
will allow us to link this bug to the upstream report.

[1] https://wiki.ubuntu.com/Bugs/Upstream/kernel

** Tags removed: needs-upstream-testing
** Tags added: kernel-bug-exists-upstream

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-22 Thread Joseph Salisbury
I will also perform some searches upstream to see if this issue is being
discussed.

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-22 Thread coli
Okay some more information:

The problem doesn't appear when just one Oneiric is running (in this
case it's running fine!) but as soon as a second Oneiric-installation is
used at the same time the problem appears. It also appears when I
install the Natty-kernel on both of those machines and they are running
at the same time but it hadn't happen when both machines were running
Natty with the same Natty-Kernel as oneiric now. And at the moment all
of our working-stations are running Natty with the Natty-kernel without
problems.

Strange problem. I will try the kernel linked above now and report back
soon!


To sum it up at the moment:

1 Natty with Natty-Kernel: runs fine
1 Oneiric with Oneiric-Kernel: runs fine
1 Oneiric with Natty-Kernel: runs fine
2 or more Natties with Natty-Kernel: run fine
2 or more Oneirics with Oneiric-Kernel: problem appears
2 or more Onericis with Natty-Kernel: problem appears

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-22 Thread coli
Okay tested and the problem also appears when both Oneirics are running
kernel 3.3.0-030300rc3-generic

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-16 Thread coli
apport information

** Tags added: apport-collected

** Description changed:

  We tried to move our Natty clients to Oneiric but have a severe show-
  stopper bug. Oneiric seems to have a problem with nfs. We use nfs for
  our home-folders with strict permissions. nfs4-server is running
  solaris.
  
  As said no problem on natty, just with oneiric. Oneiric is running fine
  some minutes, then in the dmesg we get such output:
  
  
  [ 7778.934514] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7778.934521] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7869.899811] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7869.899818] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7869.938180] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7869.938184] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7869.950989] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7869.950993] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7869.977253] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7869.977258] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7870.364422] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7870.364429] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7870.594833] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7870.594839] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7870.652639] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7870.652644] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7870.678166] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7870.678171] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7880.217148] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7880.217155] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7880.277521] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7880.277527] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7880.374106] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7880.374113] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7880.440398] nfs4_reclaim_locks: unhandled error -10024. Zeroing state
  [ 7880.440404] nfs4_reclaim_open_state: Lock reclaim failed!
  [ 7880.451121] nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
  [ 7880.451330] nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
  [ 7880.451520] nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
  [ 7880.451738] nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
  [ 7880.451921] nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
  [ 7880.452099] nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
  [ 7880.452279] nfs4_reclaim_open_state: unhandled error -10026. Zeroing state
  [ 8160.252077] INFO: task claws-mail:23156 blocked for more than 120 seconds.
  [ 8160.252085] echo 0  /proc/sys/kernel/hung_task_timeout_secs disables 
this message.
  [ 8160.252092] claws-mail  D  0 23156   1848 
0x0004
  [ 8160.252103]  8800363e3a08 0046 8800363e39a8 
a03275f0
  [ 8160.252109]  8800363e3fd8 8800363e3fd8 8800363e3fd8 
00012a40
  [ 8160.252115]  8800191edc80 88003d7cdc80 8800363e39e8 
88003fc132c0
  [ 8160.252121] Call Trace:
  [ 8160.252148]  [a03275f0] ? rpc_put_task+0x10/0x20 [sunrpc]
  [ 8160.252158]  [8110a180] ? __lock_page+0x70/0x70
  [ 8160.252164]  [815eff1f] schedule+0x3f/0x60
  [ 8160.252168]  [815effcf] io_schedule+0x8f/0xd0
  [ 8160.252173]  [8110a18e] sleep_on_page+0xe/0x20
  [ 8160.252177]  [815f07ef] __wait_on_bit+0x5f/0x90
  [ 8160.252182]  [8110a378] wait_on_page_bit+0x78/0x80
  [ 8160.252189]  [81081c50] ? autoremove_wake_function+0x40/0x40
  [ 8160.252194]  [8110a48c] filemap_fdatawait_range+0x10c/0x1a0
  [ 8160.252216]  [a03be1d0] ? nfs_writedata_alloc+0x150/0x150 [nfs]
  [ 8160.252233]  [a03b89e0] ? nfs_free_request+0x90/0x90 [nfs]
  [ 8160.252243]  [81115211] ? do_writepages+0x21/0x40
  [ 8160.252252]  [8110bd5b] ? __filemap_fdatawrite_range+0x5b/0x60
  [ 8160.252261]  [8110bdc8] filemap_write_and_wait_range+0x68/0x80
  [ 8160.252271]  [811940e2] vfs_fsync_range+0x42/0xa0
  [ 8160.252277]  [811941ac] vfs_fsync+0x1c/0x20
  [ 8160.252295]  [a03ad2e3] nfs_file_flush+0x53/0x80 [nfs]
  [ 8160.252301]  [811661ff] filp_close+0x3f/0x90
  [ 8160.252307]  [81060f3a] put_files_struct.part.14+0x7a/0xe0
  [ 8160.252312]  [81062a08] put_files_struct+0x18/0x20
  [ 8160.252316]  [81062ad4] exit_files+0x54/0x70
  [ 8160.252320]  [81062fed] do_exit+0x19d/0x440
  [ 8160.252325]  [8107186a] ? __dequeue_signal+0x6a/0xb0
  [ 8160.252330]  [81063434] do_group_exit+0x44/0xa0
  [ 8160.252334]  [8107406d] get_signal_to_deliver+0x27d/0x3f0
  [ 8160.252340]  

[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-16 Thread coli
@Joseph: Which kernel do you mean should I test? Here's just v3.2 rc4
for oneiric http://kernel.ubuntu.com/~kernel-ppa/mainline/ or shall I
manually compile the most recent kernel?

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-16 Thread coli
Okay downgrading to 3.0.0-12 doesn't change anything, but downgrading to
the latest natty-kernel 2.6.38-13-generic seems to have fixed the
problem, at least so far (no hangs within two hours now).

If someone has the same problem, I just downloaded the natty-kernel
here: http://packages.ubuntu.com/natty-updates/linux-
image-2.6.38-13-generic and installed it with dpkg -i. Of course that's
no longtime solution because ubuntu-packages may require kernel 3+.

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-16 Thread Joseph Salisbury
It would be great if you could try the kernel available at:
[1] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3-rc3-precise/

There is a .deb file located at that link, so you should be able to
download it and run:

sudo dpkg -i FILE_NAME.deb

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-16 Thread Steve Langasek
Since this is an nfs client issue with kernel backtraces, which means
it's definitely a bug in the kernel, not in the nfs-utils package.

** Changed in: nfs-utils (Ubuntu)
   Status: New = Invalid

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-16 Thread Steve Langasek
Since this is an nfs client issue with kernel backtraces, it's
definitely a bug in the kernel, not in the nfs-utils package.

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-15 Thread Joseph Salisbury
Would it be possible for you to test the latest upstream kernel?  It
will allow additional upstream developers to examine the issue. Refer to
https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.3 kernel[1] (Not a kernel in the daily directory).  Once you've
tested the upstream kernel, please remove the 'needs-upstream-testing'
tag(Only that one tag, please leave the other tags). This can be done by
clicking on the yellow pencil icon next to the tag located at the bottom
of the bug description and deleting the 'needs-upstream-testing' text.

If this bug is fixed by the mainline kernel, please add the following
tag 'kernel-fixed-upstream-KERNEL-VERSION'.  For example, if kernel
version 3.3-rc2 fixed the issue, the tag would be: 'kernel-fixed-
upstream-v3.3-rc2'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, 
please add the tag: 'kernel-unable-to-test-upstream'.  
Once testing of the upstream kernel is complete, please mark this bug as 
Confirmed.


Thanks in advance.

[1] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3-rc3-precise/


** Package changed: linux-meta (Ubuntu) = linux (Ubuntu)

** Tags added: needs-upstream-testing oneiric regression-release

** Changed in: linux (Ubuntu)
   Importance: Undecided = Medium

** Tags added: kernel-da-key

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[Bug 932687] Re: nfs4_reclaim_locks: unhandled error crashes applications and creates high load

2012-02-15 Thread Joseph Salisbury
** Also affects: nfs-utils (Ubuntu)
   Importance: Undecided
   Status: New

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