Oh, another issue...
If you have your disk partitioned, and the tmpdir is pointing to a "small" partition, you could run out of room for that reason.
I sometimes find a tiny boot partition (not a terrible idea), plus partitions for /tmp, /var /usr, and maybe others. (Or C:, D:, etc, if you are that type of person.)
Hence, I _dislike_ splitting disks into separate filesystems.
> -----Original Message-----
> From: Reindl Harald [mailto:h.reindl@stripped]
> Sent: Wednesday, October 31, 2012 11:56 AM
> To: mysql@stripped
> Subject: Re: what is stored in /var/lib/mysql_log/ ?
>
>
>
> Am 31.10.2012 19:47, schrieb walter harms:
> > thx for your help. I have found the root cause that was not related to
> immodb.
> > It was that tmpdir was pointing to the same space. This were no
> > problem for a long time then something happended, the system was
> > optimizing and was running out of space causing a table corruption
> > (why can a failed optimisation cause a table corruption ?)
>
> because running out of disk space is a condition which is hard to test in
> any combination and should never happen
