linux tarball binaries segfault on failed aio setup

[Stewart Smith]

110606 17:03:41 InnoDB: Warning: io_setup() failed with EAGAIN. Will make 5 attempts before giving up.
InnoDB: Warning: io_setup() attempt 1 failed.
InnoDB: Warning: io_setup() attempt 2 failed.
InnoDB: Warning: io_setup() attempt 3 failed.
InnoDB: Warning: io_setup() attempt 4 failed.
InnoDB: Warning: io_setup() attempt 5 failed.
110606 17:03:43 InnoDB: Error: io_setup() failed with EAGAIN after 5 attempts.
InnoDB: You can disable Linux Native AIO by setting innodb_native_aio = off in my.cnf
Segmentation fault (core dumped)

[Stewart Smith (stewart)]

Ubuntu natty, binary tarball from http://www.percona.com/redir/downloads/Percona-Server-5.5/Percona-Server-5.5.11-20.2/Linux/binary/Percona-Server-5.5.11-rel20.2-116.Linux.x86_64.tar.gz

[Stewart Smith (stewart)]

from io_setup man page:

       EAGAIN The specified nr_events exceeds the user's limit of available
              events.

so we're probably hitting that.

[Stewart Smith (stewart)]

probably upstream too

<gval> stewart: yep, about bug - http://forums.mysql.com/read.php?11,406737,406737

[Stewart Smith (stewart)]

sysctl fs.aio-max-nr is set to 65536 by default on Ubuntu. As a test, I set this to 1,000,000 and things seemed to go better. We should have a better fallback in this situation.

[Yasufumi Kinoshita (yasufumi-kinoshita)]

http://bugs.mysql.com/bug.php?id=61575

seems detected as bug of InnoDB-5.5

And anyway, at the situation, InnoDB cannot start.
Abort seems not so bad behavior.

[Stewart Smith (stewart)]

Seeing as it is upstream, and there is workarounds... I'm changing to LOW for us.

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-2643