Date: Tue, 28 Jul 2009 14:13:30 +0800 From: cooper <bo.coopci@gmail.com> To: freebsd-fs@freebsd.org Subject: About RAIDZ geometry Message-ID: <4A6E970A.1060503@gmail.com>
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Hi folks, Now that ZFS has been ported to FreeBSD, I think it's proper to ask these questions in this mailing list. Is there any detailed documentation about RAIDZ geometry? I has been wandering how zfs remembers which disk sectors are for data and which ones are for parity. They claimed "Every block is its own RAID-Z stripe" does that mean zfs writes exactly one block in every vdev_raidz_io_start if the io type of the zio is write? And also claimed "You have to traverse the filesystem metadata to determine the RAID-Z geometry" where is this metadata stored?
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