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

David Teigland teigland at redhat.com
Wed Aug 22 16:16:47 UTC 2012


On Sun, Aug 19, 2012 at 11:48:53AM +0200, Bart Verwilst wrote:
> Hi list,
> 
> I'm seeing this on one of my nodes. Reading
> http://askubuntu.com/questions/118140/unaligned-aio-dio, i decided
> to ask here to see if this is a bug or sth on my end. Using sanlock
> 2.2.
> 
> [237829.026847] EXT4-fs (sda1): Unaligned AIO/DIO on inode 5246167
> by sanlock; performance will be poor.

There's not much point in using sanlock on ext4 in the first place since
it's not a shared fs.



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