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Re: [Linux-cluster] gfs2 blocking tasks



Hi,

On Wed, 2012-08-22 at 09:35 +0200, Bart Verwilst wrote:
> Hi Steven,
> 
> I'm not sure if this is enough to fix it in 3.2:
> 
> --- inode.c.orig	2012-08-22 07:28:15.675859475 +0000
> +++ inode.c	2012-08-22 07:33:05.895865014 +0000
> @@ -1039,6 +1039,10 @@
>   	struct gfs2_rgrpd *rgd;
>   	int error;
> 
> +	error = gfs2_rindex_update(sdp);
> +	if (error)
> +		return error;
> +
>   	gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
>   	gfs2_holder_init(ip->i_gl,  LM_ST_EXCLUSIVE, 0, ghs + 1);
> 
> I've left off the "if (!rgd) { ... }" part since out_inodes doesn't 
> exist yet there, so it seemed unneeded. I'm far from a kernel developer 
> though, so please give your OK for this, so i can try to push it into 
> Ubuntu and/or upstream.
> 
> Bart
> 
It may well be enough. If we can verify that, then I'm happy to ACK this
for -stable,

Steve.

> Bart Verwilst schreef op 21.08.2012 22:35:
> > Hi Steven,
> >
> > I've tested with kernel 3.3 (
> > http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3-precise/ ), bug
> > isnt present there. Tried with 3.2.28 ( also from the kernel-ppa ),
> > and bug happens there. In the end i was idd able to trace it back to
> > 3.3-rc6, where you pushed a couple of GFS2 patches upstream.
> >
> > inode.c for example is quite different between 3.2.28 and 3.3-rc1,
> > and i do not dare to hack myself a diff file that incorporates your
> > change, fearing it will probably be less stable than it is already. 
> > :)
> >
> > Would it be too much to ask to backport your change to 3.2.x? I will
> > then test this, and try to push it upstream to -stable and/or ubuntu
> > LTS..
> >
> > Thanks a lot in advance!
> >
> > Kind regards,
> >
> > Bart
> >
> > Steven Whitehouse schreef op 21.08.2012 14:37:
> >> Hi,
> >>
> >> On Tue, 2012-08-21 at 14:23 +0200, Bart Verwilst wrote:
> >>> Hi Steven,
> >>>
> >>> The kernel of Ubuntu 12.04 LTS is based on 3.2.0, while the patch 
> >>> you
> >>> mentioned seems to be for a newer(?) version.
> >>> What should I do, offer an altered version of this patch for 
> >>> inclusion
> >>> into Ubuntu's 3.2.0 kernel, or is it a little less straightforward 
> >>> than
> >>> this? :)
> >>>
> >>> Kind regards,
> >>>
> >>> Bart
> >>>
> >> Well, since you've not got that patch in your existing kernel, then
> >> there are really two issues here. Firstly to try and verify that 
> >> this
> >> patch really is a fix for the problem, and then to figure out what 
> >> needs
> >> to be done wrt Ubuntu distro kernels. One solution may be to post it 
> >> for
> >> the upstream -stable kernel as I think most distros will then pick 
> >> this
> >> up.
> >>
> >> Are you able to build a new Ubuntu kernel with that patch in it? 
> >> That
> >> would be one way to test it. Another way which doesn't require 
> >> building
> >> kernels is this:
> >>
> >> The problem occurs when the resource groups are not uptodate, and
> >> various actions taken on the filesystem will ensure that they are
> >> uptodate. Mounting a filesystem and immediately running an unlink of 
> >> a
> >> file which is known to exist on the filesystem (before performing 
> >> any
> >> other action) should trigger that bug if it is present.
> >>
> >> It may not be that particular bug, but that looks the most likely of 
> >> any
> >> recent patch to that bit of code. Are you able to try a more recent
> >> Ubuntu kernel? If you could try one based on a more recent upstream
> >> which has that patch in it, then that might also help narrow down 
> >> the
> >> problem,
> >>
> >> Steve.
> >>
> >>> Steven Whitehouse schreef op 21.08.2012 13:27:
> >>> > Hi,
> >>> >
> >>> > On Tue, 2012-08-21 at 13:03 +0200, Bart Verwilst wrote:
> >>> >> Hi Steven,
> >>> >>
> >>> >> There is no drbd in the mix ( which is why i changed the title 
> >>> of
> >>> >> the
> >>> >> bugreport now ). I'm only using plain iSCSI. The original posted 
> >>> had
> >>> >> it
> >>> >> with drbd :)
> >>> >>
> >>> >> Kind regards,
> >>> >>
> >>> >> Bart
> >>> >>
> >>> > Ah, I see sorry.. I misunderstood the report. I wonder whether 
> >>> your
> >>> > distro kernel has this patch:
> >>> >
> >>> > 
> >>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=718b97bd6b03445be53098e3c8f896aeebc304aa
> >>> >
> >>> > Thats the most likely thing that I can see that has been fixed
> >>> > recently,
> >>> >
> >>> > Steve.
> >>> >
> >>> >
> >>> >> Steven Whitehouse schreef op 21.08.2012 12:59:
> >>> >> > Hi,
> >>> >> >
> >>> >> > On Tue, 2012-08-21 at 12:39 +0200, Bart Verwilst wrote:
> >>> >> >> Hi Steven
> >>> >> >>
> >>> >> >> Shared storage is iSCSI,
> >>> >> >>
> >>> >> >> <totem rrp_mode="none" secauth="off" token="20000"/>
> >>> >> >> <quorumd tko="4" interval="2"
> >>> >> >> device="/dev/mapper/iscsi_cluster_quorum"></quorumd>
> >>> >> >>
> >>> >> >> Actually i know why this is happening now, and can reproduce 
> >>> 100%
> >>> >> of
> >>> >> >> the time, i've added my findings as a comment to this bug 
> >>> from
> >>> >> >> somebody
> >>> >> >> having the same problem:
> >>> >> >>
> >>> >> >> 
> >>> https://bugs.launchpad.net/ubuntu/+source/gfs2-utils/+bug/1020207
> >>> >> >>
> >>> >> >> Create file on one node's gfs2 mount, rm on the other -> 
> >>> hanging
> >>> >> >> mountpoint + kernel OOPS.
> >>> >> >>
> >>> >> >> Happy that i'm finally getting somewhere with this :P
> >>> >> >>
> >>> >> >> Anything i can do to help Steven?
> >>> >> >>
> >>> >> >> Kind regards,
> >>> >> >>
> >>> >> >> Bart Verwilst
> >>> >> >>
> >>> >> > Can you reproduce this without drbd in the mix? That should 
> >>> remove
> >>> >> > one
> >>> >> > complication and make this easier to track down.
> >>> >> >
> >>> >> > I'll take a look at see what that dereference is likely to be 
> >>> in
> >>> >> the
> >>> >> > mean time,
> >>> >> >
> >>> >> > Steve.
> >>> >> >
> >>> >> >> Steven Whitehouse schreef op 21.08.2012 12:17:
> >>> >> >> > Hi,
> >>> >> >> >
> >>> >> >> > On Tue, 2012-08-21 at 12:08 +0200, Bart Verwilst wrote:
> >>> >> >> >> As yet another reply to my own post, i found this on the 
> >>> node
> >>> >> >> where
> >>> >> >> >> it
> >>> >> >> >> hangs ( this time it's vm01, and /var/lib/libvirt/sanlock
> >>> >> that's
> >>> >> >> >> hanging
> >>> >> >> >> ):
> >>> >> >> >>
> >>> >> >> >>
> >>> >> >> >> [ 1219.640653] GFS2: fsid=: Trying to join cluster 
> >>> "lock_dlm",
> >>> >> >> >> "kvm:sanlock"
> >>> >> >> >> [ 1219.660035] GFS2: fsid=kvm:sanlock.0: Joined cluster. 
> >>> Now
> >>> >> >> >> mounting
> >>> >> >> >> FS...
> >>> >> >> >> [ 1219.720108] GFS2: fsid=kvm:sanlock.0: jid=0, already 
> >>> locked
> >>> >> >> for
> >>> >> >> >> use
> >>> >> >> >> [ 1219.720113] GFS2: fsid=kvm:sanlock.0: jid=0: Looking at
> >>> >> >> >> journal...
> >>> >> >> >> [ 1219.772606] GFS2: fsid=kvm:sanlock.0: jid=0: Acquiring 
> >>> the
> >>> >> >> >> transaction lock...
> >>> >> >> >> [ 1219.772659] GFS2: fsid=kvm:sanlock.0: jid=0: Replaying
> >>> >> >> journal...
> >>> >> >> >> [ 1219.772675] GFS2: fsid=kvm:sanlock.0: jid=0: Replayed 0 
> >>> of
> >>> >> 0
> >>> >> >> >> blocks
> >>> >> >> >> [ 1219.772679] GFS2: fsid=kvm:sanlock.0: jid=0: Found 1 
> >>> revoke
> >>> >> >> tags
> >>> >> >> >> [ 1219.782611] init: libvirt-bin main process ended,
> >>> >> respawning
> >>> >> >> >> [ 1219.784161] GFS2: fsid=kvm:sanlock.0: jid=0: Journal
> >>> >> replayed
> >>> >> >> in
> >>> >> >> >> 1s
> >>> >> >> >> [ 1219.784268] GFS2: fsid=kvm:sanlock.0: jid=0: Done
> >>> >> >> >> [ 1219.784329] GFS2: fsid=kvm:sanlock.0: jid=1: Trying to
> >>> >> acquire
> >>> >> >> >> journal lock...
> >>> >> >> >> [ 1219.788349] GFS2: fsid=kvm:sanlock.0: jid=1: Looking at
> >>> >> >> >> journal...
> >>> >> >> >> [ 1219.886047] GFS2: fsid=kvm:sanlock.0: jid=1: Done
> >>> >> >> >> [ 1219.886110] GFS2: fsid=kvm:sanlock.0: jid=2: Trying to
> >>> >> acquire
> >>> >> >> >> journal lock...
> >>> >> >> >> [ 1219.891121] GFS2: fsid=kvm:sanlock.0: jid=2: Looking at
> >>> >> >> >> journal...
> >>> >> >> >> [ 1219.943994] init: ttyS1 main process (20318) terminated
> >>> >> with
> >>> >> >> >> status
> >>> >> >> >> 1
> >>> >> >> >> [ 1219.944037] init: ttyS1 main process ended, respawning
> >>> >> >> >> [ 1219.967054] init: ttyS0 main process (20320) terminated
> >>> >> with
> >>> >> >> >> status
> >>> >> >> >> 1
> >>> >> >> >> [ 1219.967100] init: ttyS0 main process ended, respawning
> >>> >> >> >> [ 1219.972037] ttyS0: LSR safety check engaged!
> >>> >> >> >> [ 1220.226027] GFS2: fsid=kvm:sanlock.0: jid=2: Acquiring 
> >>> the
> >>> >> >> >> transaction lock...
> >>> >> >> >> [ 1220.226160] GFS2: fsid=kvm:sanlock.0: jid=2: Replaying
> >>> >> >> journal...
> >>> >> >> >> [ 1220.311801] GFS2: fsid=kvm:sanlock.0: jid=2: Replayed 3 
> >>> of
> >>> >> 106
> >>> >> >> >> blocks
> >>> >> >> >> [ 1220.311805] GFS2: fsid=kvm:sanlock.0: jid=2: Found 4487
> >>> >> revoke
> >>> >> >> >> tags
> >>> >> >> >> [ 1220.322148] GFS2: fsid=kvm:sanlock.0: jid=2: Journal
> >>> >> replayed
> >>> >> >> in
> >>> >> >> >> 1s
> >>> >> >> >> [ 1220.322253] GFS2: fsid=kvm:sanlock.0: jid=2: Done
> >>> >> >> >
> >>> >> >> > So that looks like it successfully recovered the journals 
> >>> for
> >>> >> >> nodes
> >>> >> >> > one
> >>> >> >> > and two. How many nodes are in the cluster? What is the 
> >>> fencing
> >>> >> >> > quorum
> >>> >> >> > set up being used?
> >>> >> >> >
> >>> >> >> >> [ 1221.457120] BUG: unable to handle kernel NULL pointer
> >>> >> >> dereference
> >>> >> >> >> at
> >>> >> >> >> 0000000000000018
> >>> >> >> >
> >>> >> >> > So this is a dereference of something which is 24 bytes 
> >>> into
> >>> >> some
> >>> >> >> > structure or other. Certainly something which should not 
> >>> happen
> >>> >> so
> >>> >> >> we
> >>> >> >> > need to take a look at that.
> >>> >> >> >
> >>> >> >> > Was this a one off, or something that you can reproduce?
> >>> >> >> >
> >>> >> >> > Steve.
> >>> >> >> >
> >>> >> >> >
> >>> >> >> >> [ 1221.457508] IP: [<ffffffffa04f800a>] 
> >>> gfs2_unlink+0x8a/0x220
> >>> >> >> >> [gfs2]
> >>> >> >> >> [ 1221.457958] PGD 2170f2067 PUD 20c0ff067 PMD 0
> >>> >> >> >> [ 1221.458197] Oops: 0000 [#1] SMP
> >>> >> >> >> [ 1221.458374] CPU 0
> >>> >> >> >> [ 1221.458460] Modules linked in: gfs2 dlm ipmi_si mptctl
> >>> >> mptbase
> >>> >> >> >> ipmi_devintf ipmi_msghandler dell_rbu ip6table_filter
> >>> >> ip6_tables
> >>> >> >> >> iptable_filter ip_tables ebtable_nat ebtables x_tables
> >>> >> kvm_intel
> >>> >> >> kvm
> >>> >> >> >> ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager
> >>> >> >> >> ocfs2_stackglue
> >>> >> >> >> configfs dm_round_robin ib_iser bridge rdma_cm ib_cm iw_cm
> >>> >> ib_sa
> >>> >> >> >> ib_mad
> >>> >> >> >> ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi
> >>> >> >> scsi_transport_iscsi
> >>> >> >> >> bonding nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc
> >>> >> 8021q
> >>> >> >> garp
> >>> >> >> >> stp
> >>> >> >> >> joydev dm_multipath dcdbas mac_hid i7core_edac edac_core
> >>> >> >> >> acpi_power_meter lp parport usbhid hid bnx2 mpt2sas
> >>> >> >> >> scsi_transport_sas
> >>> >> >> >> e1000e raid_class scsi_dh_rdac usb_storage [last unloaded:
> >>> >> >> ipmi_si]
> >>> >> >> >> [ 1221.463058]
> >>> >> >> >> [ 1221.463146] Pid: 20611, comm: libvirtd Not tainted
> >>> >> >> >> 3.2.0-26-generic
> >>> >> >> >> #41-Ubuntu Dell Inc. PowerEdge R310/05XKKK
> >>> >> >> >> [ 1221.463626] RIP: 0010:[<ffffffffa04f800a>]
> >>> >> >> [<ffffffffa04f800a>]
> >>> >> >> >> gfs2_unlink+0x8a/0x220 [gfs2]
> >>> >> >> >> [ 1221.464100] RSP: 0018:ffff88020cfe1d28  EFLAGS: 
> >>> 00010296
> >>> >> >> >> [ 1221.464344] RAX: 0000000000000000 RBX: ffff88021ef58000
> >>> >> RCX:
> >>> >> >> >> ffff88020cfe1d40
> >>> >> >> >> [ 1221.464662] RDX: 0000000000000000 RSI: 00000000000183f3
> >>> >> RDI:
> >>> >> >> >> ffff88022efa2440
> >>> >> >> >> [ 1221.464979] RBP: ffff88020cfe1e38 R08: 4000000000000000
> >>> >> R09:
> >>> >> >> >> 0000000000000000
> >>> >> >> >> [ 1221.465297] R10: fdd50265775f720a R11: 0000000000000003
> >>> >> R12:
> >>> >> >> >> ffff88021ef50000
> >>> >> >> >> [ 1221.465615] R13: ffff88020cfe1d80 R14: ffff8802178980c0
> >>> >> R15:
> >>> >> >> >> ffff88022efa2000
> >>> >> >> >> [ 1221.466115] FS:  00007f4d2c0e7700(0000)
> >>> >> >> GS:ffff880237200000(0000)
> >>> >> >> >> knlGS:0000000000000000
> >>> >> >> >> [ 1221.466487] CS:  0010 DS: 0000 ES: 0000 CR0:
> >>> >> 0000000080050033
> >>> >> >> >> [ 1221.466748] CR2: 0000000000000018 CR3: 00000002175e4000
> >>> >> CR4:
> >>> >> >> >> 00000000000006f0
> >>> >> >> >> [ 1221.467066] DR0: 0000000000000000 DR1: 0000000000000000
> >>> >> DR2:
> >>> >> >> >> 0000000000000000
> >>> >> >> >> [ 1221.467384] DR3: 0000000000000000 DR6: 00000000ffff0ff0
> >>> >> DR7:
> >>> >> >> >> 0000000000000400
> >>> >> >> >> [ 1221.467702] Process libvirtd (pid: 20611, threadinfo
> >>> >> >> >> ffff88020cfe0000, task ffff8802241cdbc0)
> >>> >> >> >> [ 1221.468091] Stack:
> >>> >> >> >> [ 1221.468199]  0000000000000003 ffff88022f108048
> >>> >> >> ffff88020cfe1d58
> >>> >> >> >> ffff88020cfe1d40
> >>> >> >> >> [ 1221.468581]  ffff88020cfe1d40 ffff88022f108000
> >>> >> >> ffff88022354aa00
> >>> >> >> >> 0000000000000001
> >>> >> >> >> [ 1221.468963]  0000000000000000 0000000000000000
> >>> >> >> ffffffffa04f7fda
> >>> >> >> >> ffff88020cfe1d80
> >>> >> >> >> [ 1221.469346] Call Trace:
> >>> >> >> >> [ 1221.469486]  [<ffffffffa04f7fda>] ? 
> >>> gfs2_unlink+0x5a/0x220
> >>> >> >> [gfs2]
> >>> >> >> >> [ 1221.469955]  [<ffffffffa04f7ff4>] ? 
> >>> gfs2_unlink+0x74/0x220
> >>> >> >> [gfs2]
> >>> >> >> >> [ 1221.470236]  [<ffffffff8129cb2c>] ?
> >>> >> >> >> security_inode_permission+0x1c/0x30
> >>> >> >> >> [ 1221.470536]  [<ffffffff81184e70>]
> >>> >> vfs_unlink.part.26+0x80/0xf0
> >>> >> >> >> [ 1221.470802]  [<ffffffff81184f1c>] vfs_unlink+0x3c/0x60
> >>> >> >> >> [ 1221.471040]  [<ffffffff8118758a>] 
> >>> do_unlinkat+0x1aa/0x1d0
> >>> >> >> >> [ 1221.471290]  [<ffffffff81177fc0>] ? 
> >>> vfs_write+0x110/0x180
> >>> >> >> >> [ 1221.471538]  [<ffffffff811782a7>] ? sys_write+0x67/0x90
> >>> >> >> >> [ 1221.471780]  [<ffffffff81188106>] sys_unlink+0x16/0x20
> >>> >> >> >> [ 1221.472019]  [<ffffffff81661fc2>]
> >>> >> >> system_call_fastpath+0x16/0x1b
> >>> >> >> >> [ 1221.472290] Code: 00 00 49 83 c5 40 31 d2 4c 89 e9 be 
> >>> 01 00
> >>> >> 00
> >>> >> >> 00
> >>> >> >> >> e8
> >>> >> >> >> fc 1e ff ff 48 8b b3 28 02 00 00 4c 89 ff e8 ad 7e 00 00 
> >>> 48 8d
> >>> >> 8d
> >>> >> >> 08
> >>> >> >> >> ff
> >>> >> >> >> ff ff <48> 8b 78 18 31 d2 be 01 00 00 00 48 83 e9 80 e8 d2 
> >>> 1e
> >>> >> ff
> >>> >> >> ff
> >>> >> >> >> 48
> >>> >> >> >> [ 1221.473936] RIP  [<ffffffffa04f800a>]
> >>> >> gfs2_unlink+0x8a/0x220
> >>> >> >> >> [gfs2]
> >>> >> >> >> [ 1221.474240]  RSP <ffff88020cfe1d28>
> >>> >> >> >> [ 1221.474408] CR2: 0000000000000018
> >>> >> >> >> [ 1221.474959] ---[ end trace f7df780fd45600a8 ]---
> >>> >> >> >>
> >>> >> >> >>
> >>> >> >> >> Bart Verwilst schreef op 20.08.2012 09:50:
> >>> >> >> >> > Nothing out of the ordinary, should have mentioned that!
> >>> >> >> >> >
> >>> >> >> >> > <snip>
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> read
> >>> >> >> >> 20
> >>> >> >> >> > bytes from fd 17
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> >> client
> >>> >> >> >> > command is 7
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> About
> >>> >> >> >> to
> >>> >> >> >> > process command
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> memb:
> >>> >> >> command
> >>> >> >> >> to
> >>> >> >> >> > process is 7
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> memb:
> >>> >> >> >> > get_all_members: allocated new buffer (retsize=1024)
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> memb:
> >>> >> >> >> > get_all_members: retlen = 1760
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> memb:
> >>> >> >> command
> >>> >> >> >> > return code is 4
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> >> > Returning command data. length = 1760
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> >> sending
> >>> >> >> >> > reply 40000007 to fd 17
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> read
> >>> >> >> >> 20
> >>> >> >> >> > bytes from fd 17
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> >> client
> >>> >> >> >> > command is 800000b7
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> About
> >>> >> >> >> to
> >>> >> >> >> > process command
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> memb:
> >>> >> >> command
> >>> >> >> >> to
> >>> >> >> >> > process is 800000b7
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> memb:
> >>> >> >> command
> >>> >> >> >> > return code is 0
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> >> > Returning command data. length = 0
> >>> >> >> >> > Aug 19 00:08:00 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> >> sending
> >>> >> >> >> > reply c00000b7 to fd 17
> >>> >> >> >> > Aug 19 00:08:01 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> read
> >>> >> >> >> 20
> >>> >> >> >> > bytes from fd 17
> >>> >> >> >> > Aug 19 00:08:01 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> >> client
> >>> >> >> >> > command is 7
> >>> >> >> >> > Aug 19 00:08:01 vm02-test corosync[7394]:   [CMAN  ] 
> >>> daemon:
> >>> >> >> About
> >>> >> >> >> to
> >>> >> >> >> > process command
> >>> >> >> >> > </snip>
> >>> >> >> >> >
> >>> >> >> >> > Digimer schreef op 20.08.2012 00:01:
> >>> >> >> >> >> On 08/19/2012 05:34 PM, Bart Verwilst wrote:
> >>> >> >> >> >>> Aug 19 00:10:01 vm02-test kernel: [282120.240067] 
> >>> INFO:
> >>> >> task
> >>> >> >> >> >>> kworker/1:0:3117 blocked for more than 120 seconds.
> >>> >> >> >> >>> Aug 19 00:10:01 vm02-test kernel: [282120.240182] 
> >>> "echo
> >>> 0
> >>> >> >
> >>> >> >> >> >>> /proc/sys/kernel/hung_task_timeout_secs" disables this
> >>> >> >> message.
> >>> >> >> >> >>
> >>> >> >> >> >> Nothing around Aug 19 00:08:00 ?
> >>> >> >> >>
> >>> >> >> >> --
> >>> >> >> >> Linux-cluster mailing list
> >>> >> >> >> Linux-cluster redhat com
> >>> >> >> >> https://www.redhat.com/mailman/listinfo/linux-cluster
> >>> >> >>
> >>> >>
> >>>
> 



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