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Filesystem read errors
Hi,
I'm hoping someone can help me debug some intermittent read errors I'm seeing? If I read a 2Gb file from disk multiple times I see a corrupt block about once every 10Gb - damned if I can figure out why. My setup: 11 x 500Gb drives in a hardware RAID-5 array U160 SCSI connection from the RAID to an Adaptec 39160 HBA The RAID array appears in 2Tb slices across SCSI, so gvinum to glue it back together: Code:
# gvinum l 3 drives: D d1 State: up /dev/da0s1a A: 0/2097141 MB (0%) D d2 State: up /dev/da1s1a A: 0/2097141 MB (0%) D d3 State: up /dev/da2s1a A: 0/575053 MB (0%) 1 volume: V storage State: up Plexes: 1 Size: 4657 GB 1 plex: P storage.p0 C State: up Subdisks: 3 Size: 4657 GB 3 subdisks: S storage.p0.s0 State: up D: d1 Size: 2047 GB S storage.p0.s1 State: up D: d2 Size: 2047 GB S storage.p0.s2 State: up D: d3 Size: 561 GB # As a (possibly) simpler solution, is there a way I can tell the filesystem to validate checksums when it reads a block from disk and re-read if the checksum fails? Cheers! |
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