Re: [zfs-discuss] Benchmarking Methodologies

2010-04-21 Thread Thomas Uebermeier
Ben, never trust a benchmark, you haven't faked yourself! There are many benchmarks out there, but the question is, how relevant are they for your usage pattern. How important are single stream benchmarks, when you are opening and closing 1000s of files per second or if you run a DB on top of

Re: [zfs-discuss] Deduplication - deleting the original

2009-12-08 Thread Thomas Uebermeier
Colin, I think you mix up the filesystem layer (where the individual files as maintained) and the block layer, where actual data is stored. The analogue of deduplication on the filesystem layer would be to create hard links of the files, where deleting one file does not remove the other link.

[zfs-discuss] NFS export issue

2009-09-11 Thread Thomas Uebermeier
Hello, I have a ZFS filesystem structure, which is basically like this: /foo /foo/bar /foo/baz all are from one pool and /foo does only contain the other directories/mounts (no other files) When I try to export /foo via dfstab, I can see the directories bar and baz, but these are empty. Can I