From: Phillip Susi <psusi@cfl.rr.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Powerfailure and snapshot consistency
Date: Mon, 28 Mar 2011 13:20:52 -0400 [thread overview]
Message-ID: <4D90C374.9080106@cfl.rr.com> (raw)
In-Reply-To: <alpine.LRH.2.00.1103271738040.8517@bmsred.bmsi.com>
On 3/27/2011 5:55 PM, Stuart D. Gathman wrote:
> Don't need help, just trying to understand the event. So from what you
> said, the problem probably stems from the RAID1 resync, which could
> make one PV "older" than the other.
The data is written to the primary mirror first, so this can't happen.
Proper use of barriers will prevent this whole scenario, so my guess is
that you are using ext3 ( which defaults to nobarrier ) or explicitly
mounting ext4 with nobarrier.
next prev parent reply other threads:[~2011-03-28 17:16 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-26 4:24 [linux-lvm] Powerfailure and snapshot consistency Stuart D. Gathman
2011-03-26 4:42 ` Ron Johnson
2011-03-26 4:52 ` Stuart D. Gathman
2011-03-26 5:25 ` Ron Johnson
2011-03-26 5:53 ` hansbkk
2011-03-26 16:07 ` Stuart D. Gathman
2011-03-26 20:30 ` Mike Snitzer
2011-03-27 21:55 ` Stuart D. Gathman
2011-03-28 17:20 ` Phillip Susi [this message]
2011-03-28 17:24 ` Stuart D. Gathman
2011-03-28 17:37 ` Phillip Susi
2011-03-28 21:26 ` Stuart D. Gathman
2011-03-28 18:34 ` Mike Snitzer
2011-03-28 17:26 ` Les Mikesell
2011-03-28 17:54 ` Stuart D. Gathman
2011-03-28 19:43 ` Ron Johnson
2011-03-26 7:49 ` Ray Morris
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