Messages in this thread | | | Date | Sun, 20 Apr 2003 13:03:02 -0400 | From | Chuck Ebbert <> | Subject | Re: Are linux-fs's drive-fault-tolerant by concept? |
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arjan wrote:
>> You will if it writes and fails to read back. The disk can't invent a >> sector that is gone. > > but linux can if you use an raid1 mirror... maybe we should teach the md > layer to write back the data from the other disk on a "bad sector" > error.
I have some ugly code that forces all reads from a mirror set to a specific copy, set via a global sysctl. This lets you do things like make a backup from disk 0, then verify against disk 1 and take action if something is wrong.
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