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SubjectRe: 2.6.17-mm4 raid bugs & traces
On 2/07/2006 4:25 a.m., Helge Hafting wrote:
> More mm4 raid-1 troubles.

> More than a little irritating, I need the SATA raid-1 to be in sync
> so lilo can install mm5 for me. 18 hours.

Have you looked at enabling write-intent bitmaps on your raid-1 arrays?

With all the grief I have been having with RAID-1 recently, bitmaps have saved
me very very serious amounts of time resyncing the array.

Typically after my raid array has had devices/partitions kicked out (such as
when loading -mm5) it takes only 2-3 seconds to bring each non-fresh
device/partition back into the array and back up to sync (as opposed to 18

Neil wrote a good posting at about it (which
should be a FAQ entry in itself).

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