[Lustre-devel] [RFC] "lctl readonly" modification proposal

Mikhail Pershin Mikhail.Pershin at Sun.COM
Thu Aug 21 03:03:44 PDT 2008

On Thu, 21 Aug 2008 13:24:08 +0400, Alexander Zarochentsev  
<Alexander.Zarochentsev at sun.com> wrote:

> On 20 August 2008 23:42:39 Mikhail Pershin wrote:
>> 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.
> You don't need lctl readonly to do a sync, the replay_barrier function
> from test-framework.sh adds a sync explicitly

You are right, it is safe in that case.

Mikhail Pershin
Staff Engineer
Lustre Group
Sun Microsystems, Inc.

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