Date: Tue, 17 Jul 2012 15:26:29 -0700 From: CH <freebsd-fs@ch.pkts.ca> To: freebsd-fs@freebsd.org Subject: Can you list internal checksums of a ZFS filesystem? Message-ID: <20120717152629.42e0641e@fedora14-x86-64.shechinah.mi.microbiology.ubc.ca>
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Hello list, I'm moving data to a ZFS filesystem, and it's a ton of big files (more than 3 terabytes). I don't trust the network copy command completely, and so I'd like to compare checksums. I'm not looking forward to it, since it's going to be a slow process, especially if I can't run the command on the server. Since ZFS already has computed and stored checksums for every file on the destination machine, is there an easy way to extract that from the filesystem? Perhaps 'ls -lR --checksums' or similar? Note, checksums still have to be calculated on the source machine, and so the overall operation will still take the same length of time (assuming ZFS is faster than HFS+), but it does save a lot of cpu and disk reads on the destination machine, which can then be used for other things. Thanks! -- CH <freebsd-fs@ch.pkts.ca>
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