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<TITLE>RE: [DRBD-user] fsck on DRBD partition questions</TITLE>
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<P><FONT SIZE=2>Hello:<BR>
<BR>
I kinda figured as much. So there's no way to just run part of it as read-only, run the checks on the other half, and then make the checked half the primary, after invalidating the read-only part and making the checked half copy over?<BR>
<BR>
Thanks,<BR>
Mike Sweetser<BR>
<BR>
-----Original Message-----<BR>
From: drbd-user-bounces@lists.linbit.com on behalf of Florian Haas<BR>
Sent: Tue 7/1/2008 12:39 AM<BR>
To: drbd-user@lists.linbit.com<BR>
Subject: Re: [DRBD-user] fsck on DRBD partition questions<BR>
<BR>
Mike Sweetser - Adhost wrote:<BR>
> Hello,<BR>
><BR>
> We have a DRBD partition mounted right now on its primary server that is<BR>
> reporting the need for a fsck to be run. Naturally, we want to minimize<BR>
> the downtime on this, if not eliminating it entirely, so I wanted to see<BR>
> if there was any easy way to do this.<BR>
><BR>
> Would something like this be possible?<BR>
><BR>
> * Fail over to the failover server, but mount as read-only<BR>
> * Run the fsck on the primary server's copy<BR>
> * Rejoin the two and have primary copy to failover<BR>
><BR>
> Are we totally off base here? Would this work? Is there another way to<BR>
> do this?<BR>
<BR>
Yes you are off base, and this won't work. There's no way for DRBD to<BR>
"merge" the fsck modifications on one node with the modifications the<BR>
application makes on the other. And there _will_ be modifications (to<BR>
the filesystem metadata) on the other node even if you mount there<BR>
read-only.<BR>
<BR>
Florian<BR>
<BR>
--<BR>
: Florian G. Haas<BR>
: LINBIT Information Technologies GmbH<BR>
: Vivenotgasse 48, A-1120 Vienna, Austria<BR>
<BR>
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