Date: Mon, 21 Jul 2008 12:08:36 +0100 From: Pete French <petefrench@ticketswitch.com> To: sven@dmv.com Cc: koitsu@FreeBSD.org, freebsd-stable@FreeBSD.org Subject: Re: Multi-machine mirroring choices Message-ID: <E1KKtFs-000J7B-Ow@dilbert.ticketswitch.com> In-Reply-To: <1216304215.14562.19.camel@lanshark.dmv.com>
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> The *big* issue I have right now is dealing with the slave machine going > down. Once the master no longer has a connection to the ggated devices, > all processes trying to use the device hang in D status. I have tried > pkill'ing ggatec to no avail and ggatec destroy returns a message of > gctl being busy. Trying to ggatec destroy -f panics the machine. Oddly enough, this was the issue I had with iscsi which made me move to using ggated instead. On our machines I use '-t 10' as an argument to ggatec, and this makes it timeout once the connection has been down for a certain amount of time. I am using gmirror on top, not ZFS, and this handled the drive vanishing from the mirror quite happily. I haven't tried it with ZFS, which may not like having the device suddenly dissapear. -pete.
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