Date: Wed, 17 Dec 2008 16:51:00 -0500 From: "Zaphod Beeblebrox" <zbeeble@gmail.com> To: freebsd-fs@freebsd.org Subject: More on ZFS filesystem sizes. Message-ID: <5f67a8c40812171351j66dc5484pee631198030a5739@mail.gmail.com>
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So... I posted before about the widly different sizes reported by zfs list and du -h for my ports repository. Nobody explained this to any satisfying degree. I now have another quandry. I have ZFS on my laptop (two drives, mirrored) and I "zfs send" backups to my big array (6 drives, raid-Z1). The problem is that they don't match up: On the 6 drive array: vr2/backup/canoe/64/usr@20080307-1541 746M - 4.82G - vr2/backup/canoe/64/usr@20080309-1443 221M - 4.79G - vr2/backup/canoe/64/usr@20080319-1722 334M - 4.97G - vr2/backup/canoe/64/usr@20080329-0041 27.8M - 5.24G - vr2/backup/canoe/64/usr@20080402-2300 21.9M - 5.27G - vr2/backup/canoe/64/usr@20080416-0223 18.5M - 5.29G - vr2/backup/canoe/64/usr@20080417-0117 18.6M - 5.29G - On the 2 drive laptop: canoe/64/usr@20080307-1541 738M - 4.76G - canoe/64/usr@20080309-1443 217M - 4.73G - canoe/64/usr@20080319-1722 330M - 4.90G - canoe/64/usr@20080329-0041 26.7M - 5.17G - canoe/64/usr@20080402-2300 20.6M - 5.20G - canoe/64/usr@20080416-0223 17.5M - 5.22G - canoe/64/usr@20080417-0117 17.5M - 5.22G - ... note that the snapshot sizes differ by many megabytes ... and not seemingly any fixed amount, either.
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