From: Peter Braam <Peter.Braam@Sun.COM>
To: lustre-devel@lists.lustre.org
Subject: [Lustre-devel] [RFC] "lctl readonly" modification proposal
Date: Wed, 20 Aug 2008 13:59:49 -0600 [thread overview]
Message-ID: <C4D1D3D5.576E%peter.braam@sun.com> (raw)
In-Reply-To: <op.uf7ac4keatmt0c@goga>
Ah yes - testing requires the sync and shutdown also. The former
unfortunately does demand an option, but the justification is now very
clear.
Peter
On 8/20/08 1:42 PM, "Mikhail Pershin" <Mikhail.Pershin@Sun.COM> wrote:
> On Wed, 20 Aug 2008 21:39:13 +0400, Peter Braam <Peter.Braam@sun.com>
> wrote:
>
>> If I remember correctly the flush is only there to try to reduce
>> rollback.
>
> Also to be sure that all before barrier is on disk, many test cases about
> recovery rely on the fact that operations before barrier are on disk. This
> is important with HARD failure case especially, without sync before
> barrier the operations before barrier may be lost and affect the tests.
> I agree that syncless variant of barrier is needed but we also need
> barrier with sync depending on test case.
next prev parent reply other threads:[~2008-08-20 19:59 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-20 11:23 [Lustre-devel] [RFC] "lctl readonly" modification proposal Alexander Zarochentsev
2008-08-20 17:39 ` Peter Braam
2008-08-20 19:29 ` Andreas Dilger
2008-08-22 15:45 ` Alexander Zarochentsev
2008-08-24 2:02 ` Andreas Dilger
2008-08-28 17:11 ` Nathaniel Rutman
2008-08-28 20:25 ` Andreas Dilger
2008-08-29 18:46 ` Nathaniel Rutman
2008-08-20 19:42 ` Mikhail Pershin
2008-08-20 19:59 ` Peter Braam [this message]
2008-08-21 9:24 ` Alexander Zarochentsev
2008-08-21 10:03 ` Mikhail Pershin
2008-08-21 10:43 ` Alex Zhuravlev
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