[Lustre-discuss] Filesystem monitoring in Heartbeat

[Atul Vidwansa]

Hi Jagga,

You can simply mount your MDT and OST with options "errors=panic". In 
case of fibre disconnection, Lustre OSS/MDS will get IO errors and panic 
the node so that other node can take over.

With this option, your /etc/ha.d/haresources file would look like:

mds1 LVM::homevg 
Filesystem::/dev/homevg/home::/mnt/home::lustre::errors=panic

Cheers,
_Atul

Jagga Soorma wrote:
> Hi Guys,
>
> My MDT is setup with LVM and I was able to test failover based on the 
> Volume Group failing on my MDS (by unplugging both fibre cables).  
> However, for my OST's, I have created filesystems directly on the SAN 
> luns and when I unplug the fibre cables on my OSS, heartbeat does not 
> detect failure for the filesystem since it shows as mounted.  Is there 
> somehow we can trigger a failure based on multipath failing on the OSS?
>
> Any assistance would be greatly appreciated.
>
> Thanks in advance,
> -J
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