UFS2 metadata checksums

Andrew Snow andrew at modulus.org
Fri Apr 24 00:23:13 UTC 2009


Ideally you would implement complete disk checksumming as a GEOM device.

Then you could layer geom_mirror on top of it, so that if the checksum 
fails and returns EIO, geom_mirror can try the alternate device and 
rebuild the one with the bad checksums.

That will then complete the feature set implemented by ZFS, but for any 
filesystem on top of GEOM.

- Andrew


More information about the freebsd-fs mailing list