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On Thu, 21 Feb 2013 13:20:05 -0800 "Rich Braun" <richb at pioneer.ci.net> wrote: > It's a lot more than zero seconds to rebuild a big file server; > converting 8TB of data from any fs to any other fs is a lot more than > a few hours. So is generating checksums for 8TB worth of existing data and stuffing them in a database. But that's all happening in the background so I don't count it as actual work time. Converting ext2/3 to Btrfs can be done in place with three commands: umount, fsck, btrfs-convert. In terms of actual work performed up front by the guy at the keyboard, your database method takes 3+ hours of work while using Btrfs takes less than 5 minutes. > Alas, the O/S distro that I'm currently using precludes > the zero-effort solution that you recommend: btrfs has only been > supported in very-recent O/S distros. RHEL v6 and Debian 6 have Btrfs kernel modules and userspace tools. These are hardly "very-recent" distros. -- Rich P.
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