Re: Best way to set up swap for high availability?

[Luca Berra]

On Mon, Dec 06, 1999 at 02:53:22PM +0000, Stephen C. Tweedie wrote:
> Sorry, but since then we did find a fault.  Raid resync goes through the
> buffer cache.  Swap bypasses the buffer cache.  There is no coherency
> between the two activities.  It is possible for raid1 and raid5
> background resync to corrupt swap writes to the partition during
> reconstruction.

do you mean that the problem arises ONLY, when a disk fails and has
to be reconstructed?
this means we have to, as a pro-tempore solution,
disable spare disks,
rebuilding arrays manually and being sure of not being swapping
on a partition we are rebuilding. (ie swapoff;raidhotadd;swapon)
this seems better to me that not swapping on raid.

how about a flag (do_not_autorebuild) in the raid SB???
(ok, ok i know this has a lot of drawbacks, so please don't insult me)

Regards,
Luca

-- 
Luca Berra -- [EMAIL PROTECTED]
    Communications Media & Services S.r.l.