From: Aurelien Degremont <aurelien.degremont@cea.fr>
To: lustre-devel@lists.lustre.org
Subject: [Lustre-devel] async write and abort_recov
Date: Thu, 15 Jul 2010 10:05:07 +0200 [thread overview]
Message-ID: <4C3EC133.2030800@cea.fr> (raw)
In-Reply-To: <4EC6AD38-0BE5-4DDC-B98A-C1C835292305@oracle.com>
Andreas Dilger a ?crit :
> While I know Lustre will save errors from async write RPCs into the file descriptor
> for later write calls or fsync), I don't know if we save any IO error into the file
> descriptor if we discard pages due to eviction. I think only errors due to currently
> in-flight RPCs that are aborted due to client eviction are returned.
Sounds like a bug to me?
That means, if a process write data on a client, those data goes to page cache.
Not yet to OST if there is no local memory pressure. At that moment, if the client is evicted, those pages are dropped.
Then client reconnect, the process writes other data. Those I/O are successful, client has missed that some previous I/O
failed?
Am I correct?
--
Aurelien Degremont
CEA
next prev parent reply other threads:[~2010-07-15 8:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-12 10:10 [Lustre-devel] async write and abort_recov Aurelien Degremont
2010-07-12 20:16 ` Andreas Dilger
2010-07-15 8:05 ` Aurelien Degremont [this message]
2010-07-15 16:19 ` Andreas Dilger
2010-07-15 18:57 ` John Hammond
2010-07-15 19:25 ` Alexey Lyashkov
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