On Friday 2012-10-05 10:00, Adrian Schröter wrote:

JFYI, by default all build instances are using ext4 instead of ext3 file system now.

We did this switch for all distros to support SSD disks better.

How about using XFS? ext falls over in high parallelism - and that certainly exists on all the per-host workers doing build setup/teardown in the BSrv. http://www.youtube.com/watch?v=FegjLbCnoBw -- To unsubscribe, e-mail: opensuse-buildservice+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-buildservice+owner@opensuse.org

I imagine you saw this[0] too? Meaning that most (99.99%) of our users and systems ARE NOT AFFECTED. [0] http://lwn.net/Articles/521701/ On Thu, Nov 1, 2012 at 5:30 AM, Claudio Freire wrote:

On Fri, Oct 5, 2012 at 5:00 AM, Adrian Schröter wrote:

...

JFYI, by default all build instances are using ext4 instead of ext3 file system now.

We did this switch for all distros to support SSD disks better.

There is a little chance that this might influence build results, so it should not.

However, please report if you spot a problem. We may do the switch only for selected distributions in that case.

I imagine you've seen this[0]?

[0] http://www.phoronix.com/scan.php?page=news_item&px=MTIxNDQ -- To unsubscribe, e-mail: opensuse-buildservice+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-buildservice+owner@opensuse.org

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On Thu, Nov 1, 2012 at 5:34 AM, Boris Manojlovic wrote:

I imagine you saw this[0] too? Meaning that most (99.99%) of our users and systems ARE NOT AFFECTED.

[0] http://lwn.net/Articles/521701/

I didn't mean users. I meant OBS. Not sure, but OBS might be mounting and unmounting repeatedly, which is what causes corruption. -- To unsubscribe, e-mail: opensuse-buildservice+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-buildservice+owner@opensuse.org

El 01/11/12 05:34, Boris Manojlovic escribió:

...

I imagine you've seen this[0]?

[0] http://www.phoronix.com/scan.php?page=news_item&px=MTIxNDQ

Filesystem corruption does not matter in the OBS virtual machines , if something fails the build is retried. There is no journaling or disk cache safety in place, it has been disable on purpose for the sake of speed. -- To unsubscribe, e-mail: opensuse-buildservice+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-buildservice+owner@opensuse.org

Claudio Freire wrote:

On Thu, Nov 1, 2012 at 5:34 AM, Boris Manojlovic wrote:

...

I imagine you saw this[0] too? Meaning that most (99.99%) of our users and systems ARE NOT AFFECTED.

[0] http://lwn.net/Articles/521701/

I didn't mean users. I meant OBS.

Not sure, but OBS might be mounting and unmounting repeatedly, which is what causes corruption.

I assume obs uses disposible VMs. Ie. Instantiate a virgin VM, use it once and throw it away. Snapshot technology can make that pretty efficient. Greg -- Sent from my Android phone with K-9 Mail. Please excuse my brevity. -- To unsubscribe, e-mail: opensuse-buildservice+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-buildservice+owner@opensuse.org

Am Donnerstag, 1. November 2012, 03:52:14 schrieb Jan Engelhardt:

On Friday 2012-10-05 10:00, Adrian Schröter wrote:

...

JFYI, by default all build instances are using ext4 instead of ext3 file system now.

We did this switch for all distros to support SSD disks better.

How about using XFS? ext falls over in high parallelism - and that certainly exists on all the per-host workers doing build setup/teardown in the BSrv.

XFS has no support for SSD's.

http://www.youtube.com/watch?v=FegjLbCnoBw -- Adrian Schroeter SUSE Linux Products GmbH email: adrian@suse.de

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