On 4/30/07, Gregory K. Ruiz-Ade <[EMAIL PROTECTED]> wrote:
I've used Linux's md raid a couple times before, but having suffered
a hard drive death this weekend, I have some questions about
performance and recovery, if anyone's dealt with it.
I'm thinking of getting a pair of 500GB drives, putting one in my
Linux box, and the other in a Firewire case, and setting up a
software mirror between the two. Would this be asking for
performance nightmares? I.e., do writes only return as successful
once all mirror copies have been written, or only when the fastest
copy has been written?
Side comment, maybe relevant. When I set up my system with one
internal drive and one external USB drive and tried to use LVM, the
system would not boot. Until I put a delay "sleep 10" into rc.sysinit
at the point where LVM2 initialization started.
Apparently the USB setup and initialization is otherwise not ready
when the LVM setup starts and the disk is not present to be used.
Granted, your setup is different (Firewire not USB) and (MD mirror not
LVM) but there may be a similar timing problem.
carl
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carl lowenstein marine physical lab u.c. san diego
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