Messages in this thread | | | Date | Wed, 21 May 2008 20:36:33 +0100 | From | Jamie Lokier <> | Subject | Re: [PATCH 0/4] (RESEND) ext3[34] barrier changes |
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Theodore Tso wrote: > On Wed, May 21, 2008 at 11:03:24AM -0700, Andrew Morton wrote: > > > > afaik there is no need to enable this feature if the machine (actually > > the disks) are on a UPS, yes? > > Yes, as long as you're confident that there won't be a kernel > bug/regression causing a lockup while the server is under severe > memory pressure while doing lots of fsync's, file creations, renames, > etc. And as long as your 100% confident that UPS's will never fail, > janitors will never accidentally hit the Emergency Power Office
Can a kernel lockup cause this kind of corruption?
Will a system reboot wipe the disk's write cache?
I had imagined only power loss would prevent the disk from writing it's cache eventually; is that wrong?
-- Jamie
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