[gpfsug-discuss] GPFS nodes crashing during policy scan

[Matthew Robinson]

call IBM you ass,.

submit an SOS report a\nd fuckofff'


On Thu, Dec 6, 2018 at 11:46 AM Ratliff, John <jdratlif at iu.edu> wrote:

> We’re trying to run a policy scan to get a list of all the files in one of
> our filesets. There are approximately 600 million inodes in this space.
> We’re running GPFS 3.5. Every time we run the policy scan, the node that is
> running it ends up crashing. It makes it through a quarter of the inodes
> before crashing (i.e. kernel panic and system reboot). Nothing in the GPFS
> logs shows anything. It just notes that the node rebooted.
>
>
>
> In the crash logs of all the systems we’ve tried this on, we see the same
> line.
>
>
>
> <1>BUG: unable to handle kernel NULL pointer dereference at
> 00000000000000d8
>
> <1>IP: [<ffffffffa03fb7b2>]
> _ZN6Direct5dreadEP15KernelOperationRK7FileUIDxiiiPvPFiS5_PKcixyS5_EPx+0xf2/0x590
> [mmfs26]
>
>
>
> Our policy scan rule is pretty simple:
>
>
>
> RULE 'list-homedirs'
>
>     LIST 'list-homedirs'
>
>
>
> mmapplypolicy /gs/home -A 607 -g /gpfs/tmp -f /gpfs/policy/output -N
> gpfs1,gpfs2,gpfs3,gpfs4 -P /tmp/homedirs.policy -I defer -L 1
>
>
>
> Has anyone experienced something like this or have any suggestions on what
> to do to avoid it?
>
>
>
> Thanks.
>
>
>
> John Ratliff | Pervasive Technology Institute | UITS | Research Storage –
> Indiana University | http://pti.iu.edu
>
>
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>


-- 
Matthew Robinson
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919.909.0494
matthew.robinson02 at gmail.com

The greatest discovery of my generation is that man can alter his life
simply by altering his attitude of mind. - William James, Harvard
Psychologist.
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