[CentOS] problem with swap and upgrade to 4 from 3.3
Peter Farrow
peter at farrows.orgFri May 6 22:09:32 UTC 2005
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Hi There, Yes I agree, I always raid the swap.....when the original install was done a staff member (who I have now fired :-) ) did not raid the swap partitions at install time, leaving me with this problem after raiding them subsequently P. Joshua Baker-LePain wrote: >On Fri, 6 May 2005 at 9:03am, Daniel J. Cody wrote > > > >>Hey Peter, >> >> > > > >>>I guess I could set the swap back to an unmirrored set, run the upgrade >>>from the CDs then mirror it again, but this is not ideal, does anyone >>>have any suggestions as to how to fix this little RAID niggle with the >>>swap caused by not RAIDing the swap parition originally on install? >>> >>> >>I wouldn't personally recommend using software raid on swap partitions >>since it causes all sorts of problems like you're describing. If you >>want to get raid type performance from your swap partitions, I'd suggest >>just letting the kernel itself handle that. >> >> > >The main purpose of putting swap on a mirrored array is not performance. >It allows the system to stay up and running should a disk fail. Mirroring >the system disk is pretty much pointless if the system is going to die >upon losing a disk anyway b/c half the swap is now gone. > > >
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