Matthew Stringer wrote: > On Tuesday 04 December 2007 17:22:24 James Knott wrote: >> Matthew Stringer wrote: >>> On Tuesday 04 December 2007 15:27:06 James Knott wrote: >>>> Matthew Stringer wrote: >>>>> I don't normally SoftRAID the swap partitions as it would be faster >>>>> just to have multiple ones instead (you're not limited to one). >>>> Given one of the goals of RAID is to keep the system running when a >>>> drive fails, what happens when a drive containing swap croaks? >>> Your available swap space would be reduced, doesn't cause the system to >>> fail. >> And when it goes to retrieve the contents of that swap that's no longer >> there? Drives do fail occasionally, when the system is running. > > If you swap over multiple partitions the data is automatically striped, it > usually copes OK if a drive blobs Linux is fairly stable these days when it > comes to read/write errors. I think you're splitting hairs if you think that > sotfRAID1 gives you enough extra stability which outweighs the reduction in > performance. > There is no need to create the swap partitions as RAID drives. The simple solution is to use the ionice command to set the I/O priority of all swap partitions to the same value. The kernel then treats them in a manner similar to RAID 0. For performance reasons, you don't want anything to slow down swap.
Bill Anderson WW7BA -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
