Messages in this thread | | | Date | Wed, 26 Aug 2009 13:15:37 +0200 | From | Pavel Machek <> | Subject | Re: [patch] ext2/3: document conditions when reliable operation is possible |
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Hi!
>> Ok, can you help? Having a piece of MD documentation explaining the >> "powerfail nukes entire stripe" and how current filesystems do not >> deal with that would be nice, along with description when exactly that >> happens. > > Except of course for the inconvenient detail that a power > failure on a degraded RAID 5 array does *NOT* nuke the > entire stripe.
Ok, you are right. It will nuke unrelated sector somewhere on the stripe (one that is "old" and was not recently written) -- which is still something ext3 can not reliably handle. Pavel
-- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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