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dm6079
09-Jun-2012, 13:43
We've been having some issues with a 3rd party driver (EMC powerpath) that causes our SLES11 SP1 boxes to crash under certain circumstances. All of the configuration settings are in place to capture a crash dump. Except that the /var filesystem does not have enough space to write the dump files. I thought it would be a simple matter to add /var/crash as a separate filesystem with enough room to hold the files (16GB). Unfortunately, the crash kernel doesn't notice this a a distinct mount point and still tries to write under the original /var . It appears that the crash kernel is LVM aware since all of our OS filesystems are built on LVM. It's also reading /etc/fstab or it wouldn't know to mount /var And, yes, this /var/crash is mounted at the time of a crash.

How to get it to take that extra step and look for /var/crash in /etc/fstab ?? I would prefer not to just expand /var to hold the dump files since that would become available space that regular processes could potentially consume.

thanks,
Don M.

malcolmlewis
09-Jun-2012, 13:52
We've been having some issues with a 3rd party driver (EMC powerpath)
that causes our SLES11 SP1 boxes to crash under certain circumstances.
All of the configuration settings are in place to capture a crash dump.
Except that the /var filesystem does not have enough space to write
the dump files. I thought it would be a simple matter to add
/var/crash as a separate filesystem with enough room to hold the files
(16GB). Unfortunately, the crash kernel doesn't notice this a a
distinct mount point and still tries to write under the original /var
It appears that the crash kernel is LVM aware since all of our OS
filesystems are built on LVM. It's also reading /etc/fstab or it
wouldn't know to mount /var And, yes, this /var/crash is mounted at
the time of a crash.

How to get it to take that extra step and look for /var/crash in
/etc/fstab ?? I would prefer not to just expand /var to hold the
dump files since that would become available space that regular
processes could potentially consume.

thanks,
Don M.



Hi
Just remove the crash directory and either create a softlink or add
into fstab as a mount point.


cd /var
rm -r crash
ln -s /your/new/location crash




--
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 12.1 (x86_64) Kernel 3.1.10-1.9-desktop
up 0:21, 3 users, load average: 0.01, 0.03, 0.05
CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU