Re: ZFS Stability & MySQL (Comments Requested)

From: Jason J. W. Williams <jasonjwwilliams_at_gmail.com>
Date: Fri, 30 Apr 2010 15:39:40 -0600
Hi Pierre,

By chance did you attempt to write a test file to the ZFS filesystem
holding the database and logs? Just curious if ZFS was hung since a
MySQL restart corrected it. Thank you for your help.

-J

On Fri, Apr 30, 2010 at 2:21 PM, Pierre Massat <depaulou_at_efrei.fr> wrote:
> On Fri, Apr 30, 2010 at 3:14 PM, Jason J. W. Williams
> <jasonjwwilliams_at_gmail.com> wrote:
>> What was the iowait when the update hangs occurred? Also, what was the box's
>> uptime approx when it happened? Have you surpassed that amount of uptime
>> since? Were you able to DTrace MySQL to see what func was hanging?
>
> The iowait was 0.0% when the hangs occurred and the uptime of the box
> was something around 120 days and it's currently 166 days (I only
> stopped MySQL daemon which was around 60 days of uptime and now 46
> days).
>
> Unfortunately, I wasn't able to dtrace MySQL.
>
> --
> Pierre Massat
>
Received on Fri Apr 30 2010 - 19:39:45 UTC

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