EXT4-fs: Unaligned AIO/DIO on inode xx by sanlock; performance will be poor.

Bart Verwilst lists at verwilst.be
Wed Aug 22 21:37:28 UTC 2012


Hi David,

root at vm03-test:~# find / -inum 5246167 -print
root at vm03-test:~#

Can't seem to find the inode..

Wrt. file locks instead of sanlock, 
http://libvirt.org/locking.html#plugins only talks about sanlock?

Kind regards,

Bart

David Teigland schreef op 22.08.2012 21:37:
> On Wed, Aug 22, 2012 at 09:22:07PM +0200, Bart Verwilst wrote:
>> True. But i'm not using sanlock on ext4. :)
>
> Hm, I wonder if libvirt is putting some sanlock files outside of
> /var/lib/libvirt/sanlock...  can you find out what file inode 5246167 
> is?
>
> (BTW, with any shared fs I recommend first trying to use file locks
> instead of sanlock.)
>
>
>> /var/log/syslog:Aug 22 09:56:50 vm03-test kernel: [43429.050495]
>> EXT4-fs (sda1): Unaligned AIO/DIO on inode 5246167 by sanlock;
>> performance will be poor.


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