[Linux-HA] 'Stale NFS File Handle' using LVM on shared SCSI

[Chris Gallo]

You need to have the NFS system files mounted as well. They are kept
in /var/lib/nfs and need to be the same on each node serving NFS
shares. That will get rid of the stale file handler thing.

A tutorial to do this with drbd can be found here
http://www.linux-ha.org/DRBD/NFS

Also, I HIGHLY suggest moving to ha version2, its MUCH more flexible
in terms of what you can do.


ChrisG

On 11/12/06, Kirk Ismay <captain at netidea.com> wrote:
> Hi everyone,
>
> I'm trying to set up an Active-Active NFS server using heartbeat v2.0.7
> on Debian Sarge (3.1).
>
> I'm using two servers connected to a StorCase Infostation external
> SCSI-to-SATA RAID, using LSI Logic LSI53C1030 adapters on the servers
> (an FC SAN wasn't within the budget). I have the fail-over process
> working after a fashion, in that the service IP, and file-system switch
> from one node to the other.  The problem is that the NFS client
> complains of having a 'Stale NFS File Handle' after the switch.
>
>  From reading the HaNFS document here: http://www.linux-ha.org/HaNFS, I
> understand that it can happen if the device numbers change.  I have
> verified that this is what is happening, though the document says that
> using LVM is supposed to prevent this.
>
> Here is my haresources:
>
> node1   192.168.0.50
> node2   192.168.0.51 LVM::/dev/storage0 \
>     Filesystem::/dev/mapper/storage0-raid0::/srv/exports/raid0::ext3 \
>     nfs::node1
>
> I am using Matt  Schillinger's scripts:
> http://chilli.linuxmds.com/~mschilli/NFS/active-active-nfs.html
>
> Here's my device listing from both systems:
>
> node1:
> brw-------  1 root root 253, 14 2006-11-12 02:12 /dev/mapper/storage0-raid0
> brw-------  1 root root 253, 12 2006-10-31 15:22 /dev/mapper/storage1-home1
> brw-------  1 root root 253, 10 2006-10-31 15:22 /dev/mapper/storage2-home2
>
> node2:
> brw-------  1 root root 253, 4 2006-11-12 01:35 /dev/mapper/storage0-raid0
> brw-------  1 root root 253, 2 2006-11-11 23:14 /dev/mapper/storage1-home1
> brw-------  1 root root 253, 0 2006-11-11 23:14 /dev/mapper/storage2-home2
>
> Is there a way to configure LVM to use a specific device number for each
> LV?
>
> Also, I originally had LinuxSCSI::1:0:0:0 in my haresources, but I could
> only achieve fail-over's one way. If I tried to move the device back, it
> wouldn't work. According to  dmesg it said that it was a dead device.
> It seems to work without using LinuxSCSI, I actually mounted two
> separate LV's on each node on the same RAID volume, and ran bonnie on
> both nodes.  Nothing complained.  I have no idea if that is safe or not.
>
> If anyone has used the StorCase RAID before, I'd love to be able to
> compare notes.
>
> Thanks in advance.
>
> Sincerely,
> Kirk Ismay
> System Administrator
>
> --
> Net Idea
> 201-625 Front Street Nelson, BC V1L 4B6
>
>
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