[Linux-HA] Heartbeat/DRBD - NFS Issues
sparctacus at gmail.com
Wed Jan 14 14:58:45 MST 2009
mount -o udp ?
On Wed, Jan 14, 2009 at 11:37 AM, Mike Sweetser - Adhost
<mikesw at adhost.com> wrote:
> We're having serious issues with NFS properly releasing a DRBD-based
> device when the resource tries to migrate. We repeatedly end up with
> "device or resource busy" errors when unmounting, and if we do a lazy
> umount (umount -l) then DRBD will not allow the resource to transfer,
> stating "device is open by somebody".
> The somebody appears to be NFS, as if we kill all NFS processes, it
> finally releases them. However, this isn't an option, as we have
> multiple NFS-exported resources, and we can't kill them all to migrate
> Is there a way to find which NFS processes are using the specific mount
> and kill only those, or is there another way to reset things without
> totally restarting NFS? We don't want to lose existing mounts other
> than the resource we're actually migrating.
> Mike Sweetser
> Linux-HA mailing list
> Linux-HA at lists.linux-ha.org
> See also: http://linux-ha.org/ReportingProblems
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