[Linux-cluster] System load at 1.00 for gfs2?

[Juan Ramon Martin Blanco]

On Wed, May 13, 2009 at 7:35 PM, Ray Van Dolson <rvandolson at esri.com> wrote:

> Running a gfs2 filesystem on RHEL 5.3 PPC (kernel 2.6.18-128.1.10.el5)
> backed by clvm (two nodes).
>
> # gfs2_tool list
> 253:4 domus:homedir1
>
> # gfs2_tool getargs /domus1
> data 2
> suiddir 0
> quota 0
> posix_acl 0
> num_glockd 1
> upgrade 0
> debug 0
> localflocks 0
> localcaching 0
> ignore_local_fs 0
> spectator 0
> hostdata jid=1:id=196610:first=0
> locktable
> lockproto
>
> As soon as I mount the gfs2 filesystem on either node, that node's
> system load average goes to 1.00 and stays there until the filesystem
> is unmounted.
>
> top, sar and iostat all show the system as being completely idle, and
> no iowait going on:
>
> Linux 2.6.18-128.1.10.el5 (domusA.esri.com)   05/13/2009
>
> 12:00:01 AM   runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15
> 12:10:01 AM         0       145      1.00      1.00      1.00
> 12:20:01 AM         0       145      1.00      1.00      1.00
> 12:30:01 AM         0       145      1.00      1.01      1.00
> 12:40:01 AM         0       145      1.00      1.00      1.00
> 12:50:01 AM         0       145      1.01      1.01      1.00
> 01:00:01 AM         0       145      1.00      1.00      1.00
> 01:10:01 AM         0       145      1.00      1.00      1.00
>
> 12:00:01 AM       CPU     %user     %nice   %system   %iowait    %steal
> %idle
> 12:10:01 AM       all      0.09      0.00      0.46      0.02      0.00
> 99.43
> 12:20:01 AM       all      0.09      0.00      0.45      0.02      0.00
> 99.44
> 12:30:01 AM       all      0.09      0.52      0.48      0.02      0.00
> 98.88
> 12:40:01 AM       all      0.10      0.00      0.45      0.02      0.00
> 99.43
> 12:50:01 AM       all      0.09      0.00      0.45      0.02      0.00
> 99.44
> 01:00:01 AM       all      0.09      0.00      0.45      0.02      0.00
> 99.44
> 01:10:01 AM       all      0.09      0.00      0.45      0.02      0.00
> 99.43
>
> Can anyone speculate on what might be causing this?  I found one other
> post on the subject[1], but there were no replies.  Would any other
> information be helpful?
>
This is still happening to me, using the last available packages from rhel5.
Load is incremented by 1 everytime I mount a gfs2 filesystem.
I am not using kmod-gfs2, do I have to?

Regards,
Juan Ramón Martín

>
> Ray
>
> [1]: http://www.redhat.com/archives/linux-cluster/2009-March/msg00166.html
>
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