Ruslan Sivak wrote:
John R Pierce wrote:
Yes, if two disks belonging to the same mirror go down, I lose my
data. But if two disks which are not from the same mirror go down,
I would like to be able to boot up without any problems. And as
someone else mentioned, what else am I going to do with those
200mb? I'd rather maintain symmetry and not have to worry which
disks /boot is on, as I'll know that if the data drive survives,
then I won't have any problems with the boot drive either.
so, is your / on a 4 spindle mirror too?
N-way mirrors require every write to be done N times.
No, / is on a 2 raid 1 arrays which are striped using LVM. And the N
times write penalty doesn't really apply to boot, since it rarely gets
written to.
so, if the LVM is built from the 2 raid1 sets md1 and md2, and both
drives of md1 are down, its down. ditto if both drives of md2 are
down. so why not just put the /boot on the same spindles as md1 ?
btw, LVM isn't really striping, its more like globbing. or scattering.
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