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
hours...).
Neil wrote a good posting at http://lkml.org/lkml/2005/12/4/118 about it (which
should be a FAQ entry in itself).
reuben
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