[Gluster-users] glusterfsd process spinning
Pranith Kumar Karampuri
pkarampu at redhat.com
Mon Jun 2 09:26:25 UTC 2014
This is good news, so something was definitely going on. Could you compress the file using bzip or something and see how much size it would be. I will check and see if there is a way for you to upload the logs.
Pranith
----- Original Message -----
> From: "Franco Broi" <franco.broi at iongeo.com>
> To: "Pranith Kumar Karampuri" <pkarampu at redhat.com>
> Cc: gluster-users at gluster.org
> Sent: Monday, June 2, 2014 2:48:56 PM
> Subject: Re: [Gluster-users] glusterfsd process spinning
>
> Hi Pranith
>
> Here's a listing of the brick logs, looks very odd especially the size
> of the log for data10.
>
> [root at nas3 bricks]# ls -ltrh
> total 2.6G
> -rw------- 1 root root 381K May 13 12:15 data12-gvol.log-20140511
> -rw------- 1 root root 430M May 13 12:15 data11-gvol.log-20140511
> -rw------- 1 root root 328K May 13 12:15 data9-gvol.log-20140511
> -rw------- 1 root root 2.0M May 13 12:15 data10-gvol.log-20140511
> -rw------- 1 root root 0 May 18 03:43 data10-gvol.log-20140525
> -rw------- 1 root root 0 May 18 03:43 data11-gvol.log-20140525
> -rw------- 1 root root 0 May 18 03:43 data12-gvol.log-20140525
> -rw------- 1 root root 0 May 18 03:43 data9-gvol.log-20140525
> -rw------- 1 root root 0 May 25 03:19 data10-gvol.log-20140601
> -rw------- 1 root root 0 May 25 03:19 data11-gvol.log-20140601
> -rw------- 1 root root 0 May 25 03:19 data9-gvol.log-20140601
> -rw------- 1 root root 98M May 26 03:04 data12-gvol.log-20140518
> -rw------- 1 root root 0 Jun 1 03:37 data10-gvol.log
> -rw------- 1 root root 0 Jun 1 03:37 data11-gvol.log
> -rw------- 1 root root 0 Jun 1 03:37 data12-gvol.log
> -rw------- 1 root root 0 Jun 1 03:37 data9-gvol.log
> -rw------- 1 root root 1.8G Jun 2 16:35 data10-gvol.log-20140518
> -rw------- 1 root root 279M Jun 2 16:35 data9-gvol.log-20140518
> -rw------- 1 root root 328K Jun 2 16:35 data12-gvol.log-20140601
> -rw------- 1 root root 8.3M Jun 2 16:35 data11-gvol.log-20140518
>
> Too big to post everything.
>
> Cheers,
>
> On Sun, 2014-06-01 at 22:00 -0400, Pranith Kumar Karampuri wrote:
> >
> > ----- Original Message -----
> > > From: "Pranith Kumar Karampuri" <pkarampu at redhat.com>
> > > To: "Franco Broi" <franco.broi at iongeo.com>
> > > Cc: gluster-users at gluster.org
> > > Sent: Monday, June 2, 2014 7:01:34 AM
> > > Subject: Re: [Gluster-users] glusterfsd process spinning
> > >
> > >
> > >
> > > ----- Original Message -----
> > > > From: "Franco Broi" <franco.broi at iongeo.com>
> > > > To: "Pranith Kumar Karampuri" <pkarampu at redhat.com>
> > > > Cc: gluster-users at gluster.org
> > > > Sent: Sunday, June 1, 2014 10:53:51 AM
> > > > Subject: Re: [Gluster-users] glusterfsd process spinning
> > > >
> > > >
> > > > The volume is almost completely idle now and the CPU for the brick
> > > > process has returned to normal. I've included the profile and I think
> > > > it
> > > > shows the latency for the bad brick (data12) is unusually high,
> > > > probably
> > > > indicating the filesystem is at fault after all??
> > >
> > > I am not sure if we can believe the outputs now that you say the brick
> > > returned to normal. Next time it is acting up, do the same procedure and
> > > post the result.
> >
> > On second thought may be its not a bad idea to inspect the log files of the
> > bricks in nas3. Could you post them.
> >
> > Pranith
> >
> > >
> > > Pranith
> > > >
> > > > On Sun, 2014-06-01 at 01:01 -0400, Pranith Kumar Karampuri wrote:
> > > > > Franco,
> > > > > Could you do the following to get more information:
> > > > >
> > > > > "gluster volume profile <volname> start"
> > > > >
> > > > > Wait for some time, this will start gathering what operations are
> > > > > coming
> > > > > to
> > > > > all the bricks"
> > > > > Now execute "gluster volume profile <volname> info" >
> > > > > /file/you/should/reply/to/this/mail/with
> > > > >
> > > > > Then execute:
> > > > > gluster volume profile <volname> stop
> > > > >
> > > > > Lets see if this throws any light on the problem at hand
> > > > >
> > > > > Pranith
> > > > > ----- Original Message -----
> > > > > > From: "Franco Broi" <franco.broi at iongeo.com>
> > > > > > To: gluster-users at gluster.org
> > > > > > Sent: Sunday, June 1, 2014 9:02:48 AM
> > > > > > Subject: [Gluster-users] glusterfsd process spinning
> > > > > >
> > > > > > Hi
> > > > > >
> > > > > > I've been suffering from continual problems with my gluster
> > > > > > filesystem
> > > > > > slowing down due to what I thought was congestion on a single brick
> > > > > > being caused by a problem with the underlying filesystem running
> > > > > > slow
> > > > > > but I've just noticed that the glusterfsd process for that
> > > > > > particular
> > > > > > brick is running at 100%+, even when the filesystem is almost idle.
> > > > > >
> > > > > > I've done a couple of straces of the brick and another on the same
> > > > > > server, does the high number of futex errors give any clues as to
> > > > > > what
> > > > > > might be wrong?
> > > > > >
> > > > > > % time seconds usecs/call calls errors syscall
> > > > > > ------ ----------- ----------- --------- --------- ----------------
> > > > > > 45.58 0.027554 0 191665 20772 futex
> > > > > > 28.26 0.017084 0 137133 readv
> > > > > > 26.04 0.015743 0 66259 epoll_wait
> > > > > > 0.13 0.000077 3 23 writev
> > > > > > 0.00 0.000000 0 1 epoll_ctl
> > > > > > ------ ----------- ----------- --------- --------- ----------------
> > > > > > 100.00 0.060458 395081 20772 total
> > > > > >
> > > > > > % time seconds usecs/call calls errors syscall
> > > > > > ------ ----------- ----------- --------- --------- ----------------
> > > > > > 99.25 0.334020 133 2516 epoll_wait
> > > > > > 0.40 0.001347 0 4090 26 futex
> > > > > > 0.35 0.001192 0 5064 readv
> > > > > > 0.00 0.000000 0 20 writev
> > > > > > ------ ----------- ----------- --------- --------- ----------------
> > > > > > 100.00 0.336559 11690 26 total
> > > > > >
> > > > > >
> > > > > >
> > > > > > Cheers,
> > > > > >
> > > > > > _______________________________________________
> > > > > > Gluster-users mailing list
> > > > > > Gluster-users at gluster.org
> > > > > > http://supercolony.gluster.org/mailman/listinfo/gluster-users
> > > > > >
> > > >
> > > >
> > >
>
>
>
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