Date: Fri, 16 Aug 2002 09:21:04 -0500 From: Dan Nelson <dnelson@allantgroup.com> To: "Roger 'Rocky' Vetterberg" <listsub@401.cx> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: syncing local filesystems Message-ID: <20020816142104.GA74231@dan.emsphone.com> In-Reply-To: <3D5CE948.6020604@401.cx> References: <3D5CE948.6020604@401.cx>
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In the last episode (Aug 16), Roger 'Rocky' Vetterberg said: > I have a machine that stores some vital information. This machine has > to be restored asap in case of a failure, so the usual solution with > restoring from backup tapes is too slow to be usefull here. Right > now, Im testing a machine that has 2 identical drives, ad0 and ad2. > They are both mounted in sleds, so in case of a disk crash the disk > can be replaced in seconds. > > Since the changes in the filesystem are very small (I would estimate > something like 5-15megs of new data and maybe 10 changed files > between dumps) Ive been looking at utilities such as rsync and ssync. > rsync seems to be mostly aimed at network replication, and ssync > seems to be just fine if you want to sync directories, but not entire > drives. Even though rsync was originally a network-oriented tool, it does work fine replicating a local disk to a local disk. rsync -a --delete should do the trick for you. -- Dan Nelson dnelson@allantgroup.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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