Date: Fri, 23 Oct 2009 13:53:31 +0200 From: Oliver Brandmueller <ob@e-Gitt.NET> To: freebsd-stable@freebsd.org Subject: Re: problems with gmirror on ggate over slow link Message-ID: <20091023115331.GE95002@e-Gitt.NET> In-Reply-To: <E1N1Hom-000HpE-6S@dilbert.ticketswitch.com> References: <E1N1Hom-000HpE-6S@dilbert.ticketswitch.com>
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Hi, On Fri, Oct 23, 2009 at 11:56:24AM +0100, Pete French wrote: > If the remote diisc is actually on a very close machine - e.g. a server > plugged into the same ether net - then all works fine. If I make > the remote disc somewhere actually substantially further away on the > nbetwork, however, then when I attach the disc it starts to rebuild the > mirror but then fails a fraction of a second later thus: > > GEOM_MIRROR: Device mysql0: rebuilding provider ggate1a. > GEOM_MIRROR: Synchronization request failed (error=5). ggate1a[WRITE(offset=1310720, length=131072)] > GEOM_MIRROR: Device mysql0: provider ggate1a disconnected. > GEOM_MIRROR: Device mysql0: rebuilding provider ggate1a stopped. > > The interesting this is that the problem is only with gmirror, not with > the underlying ggate disc which remains attached and accessible. I tested > this by adding a second partition (ggate1b in the example above) and > mounting a UFS filesystem on that. Just a wild guess, have you tried to set kern.geom.mirror.timeout to a higher value? - Olli -- | Oliver Brandmueller http://sysadm.in/ ob@sysadm.in | | Ich bin das Internet. Sowahr ich Gott helfe. |
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