From: Andrew Morton <akpm@zip.com.au>
To: Christoph Rohland <cr@sap.com>
Cc: zlatko.calusic@iskon.hr, linux-kernel@vger.kernel.org,
Hugh Dickins <hugh@veritas.com>
Subject: Re: 2.5.18 / ext3 / oracle trouble
Date: Mon, 27 May 2002 00:52:47 -0700 [thread overview]
Message-ID: <3CF1E5CF.2B11258F@zip.com.au> (raw)
In-Reply-To: <877klr2ank.fsf@atlas.iskon.hr> <d6vi836v.fsf@sap.com>
Christoph Rohland wrote:
>
> Hi Zlatko,
>
> On Sun, 26 May 2002, Zlatko Calusic wrote:
> > Hi!
> >
> > After lots of testing, I can say that 2.5.18 works great in all
> > three modes of ext3 for all but one purpose. Oracle database still
> > gets corrupted during insert load. More precisely, online redo log
> > gets corrupted, database panics and restore is in order.
> >
> > This leads me to thinking that there's something wrong with sysv
> > shared memory in 2.5.x. Although the problem could also be in
> > fsync() or swap_out() & co. paths, it's yet to be discovered.
> >
> > It could also be that journaled mode helps the trouble, and it could
> > be that some swapping makes it more certain, but none of these two
> > facts are proved for sure. Take it as an observation.
> >
> > Christoph, I don't know if you're still taking care of shmem in
> > 2.5.x, so take my apologies if you didn't want to see this email.
> >
> > Regards,
> > --
> > Zlatko
>
> Unfortunately I do not have the time to work on shmem right now. Hugh
> Dickins is the right guy to contact nowadays.
>
Most likely suspect here is the heavy fsync() load is triggering
some timing problem in ext3 - it'll be pushing the commits though
at high rate.
I'll teach fsx-linux (great test app, btw) about fsync() and see
how it stands up. And if Zlatko can retest on ext2 that would be a
big help.
-
next prev parent reply other threads:[~2002-05-27 7:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-26 15:26 2.5.18 / ext3 / oracle trouble Zlatko Calusic
2002-05-26 19:35 ` Andrew Morton
2002-05-27 7:23 ` Christoph Rohland
2002-05-27 7:52 ` Andrew Morton [this message]
2002-05-27 8:43 ` Zlatko Calusic
2002-05-27 20:02 ` Zlatko Calusic
2002-05-27 20:28 ` Andrew Morton
2002-05-27 20:29 ` Zlatko Calusic
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3CF1E5CF.2B11258F@zip.com.au \
--to=akpm@zip.com.au \
--cc=cr@sap.com \
--cc=hugh@veritas.com \
--cc=linux-kernel@vger.kernel.org \
--cc=zlatko.calusic@iskon.hr \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.