[Lustre-discuss] I/O error on clients

[Andreas Dilger]

On 2010-07-13, at 18:56, Peter Kitchener wrote:
> Is there any sort of ETA on 1.8.4?

The scheduled release data is July 31.

>> See bug 22897 for a description of the bug.  But the fix is a simple 
>> one-liner in bug 22786, attachment 29866.  The fix will first appear in 
>> lustre 1.8.4.  I would highly recommend to anyone using 1.8.2 or 1.8.3 
>> that they add that patch.
> 
> I have attempted to build the OST/MDT rpms with the match mentioned by Chris previously against the current running lustre kernel src rpm (2.6.18.164-1.11.el5_lustre.1.8.2). When i install the RPMS lustre and lustre-modules that were built and attempt to remount the OST/MDT partitions i receive the following messages output for each partition. I've had to roll back to the rpms from the lustre website as they work.
> 
> Jul 14 10:23:06 beryllium kernel: LDISKFS-fs: mounted filesystem md3 with ordered data mode
> Jul 14 10:23:07 beryllium kernel: fsfilt_ldiskfs: disagrees about version of symbol ldiskfs_free_blocks


Looks like you either didn't rebuild the ldiskfs module, or you forgot to reload the Lustre modules before starting again.  You can use "lustre_rmmod" to remove all of the Lustre modules.  If you rebooted, or did this already, and this error is still present then it looks like you somehow didn't build the modules correctly.

Cheers, Andreas
--
Andreas Dilger
Lustre Technical Lead
Oracle Corporation Canada Inc.