On 4-Apr-08, at 12:12 PM, Zan Lynx wrote:
On Fri, 2008-04-04 at 00:21 -0400, Toby Thain wrote:
On 3-Apr-08, at 8:14 PM, Zan Lynx wrote:
A RAID media verify or a badblocks -n run can usually fix these.
Only if your RAID uses CRCs (most don't).
ZFS is the real answer to undetected corruption.
If one hard disk returns a CRC read error for a block but the other
RAID-1 mirror disk or the parity disk(s) return good blocks, the array
controller should know which data is good and which is bad in order to
rewrite a good copy.
That's a lot of IFs. I prefer ZFS' approach: Check which side of the
mirror is bad, and take the good side.
--Toby
--
Zan Lynx <zlynx@xxxxxxx>
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