FC4 kernel performance
Charles Lopes
tjarls at iee.lu
Wed Jun 22 17:19:26 UTC 2005
Alan Cox wrote:
>On Wed, Jun 22, 2005 at 08:46:14AM -0500, Chris Adams wrote:
>
>
>>Most things consider a bad sector a sign of a bad drive. On today's
>>drives, where bad sectors are remapped internally to the drive, by the
>>time you see a bad sector, the drive has remapped a bunch of sectors
>>(and may be out of spare space).
>>
>>
>
>Bad sector on write yes - that generally means its time to throw the drive
>away, on read its not neccessarily so bad. Thats one reaosn e2fsck will
>rewrite inode and other critical blocks that won't read as part of the
>recovery
>
>
Isn't what RAID1 does already. My understanding was that in case of read
error, it retries the read operation on a working mirror and rewrites
the failed block. Can anyone confirm or infirm the RAID1 behaviour?
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