Moving a server over to a RAID

James Hogarth james.hogarth at
Sat Aug 21 20:14:57 UTC 2010

> Thanks mon. I think I read somewhere if you use the options
> defaults,pri=1 for each swap you don't have to RAID them because the
> kernel will automatically balance them or something like that.

yes and no.... it'll balance them for use in general with equal
prioirty but if the swap is not mirrored and a disk dies with some
swap being assigned to a process having it's memory mapped to the
swap... that process will then crash/fault just as if it had
encountered bad memory or you had pulled a DIMM out...

Think of it like raid 0 or raid 1 for swap ....

More information about the ubuntu-users mailing list