hi ya brad On Wed, 5 Jan 2005, Brad Campbell wrote: > Alvin Oga wrote: > > > > for swap ... i personally don't see any reason to mirror > > swap partitions ... > > - once the system dies, ( power off ), all temp > > data is useless unless one continues from a coredump > > ( from the same state as when it went down initially ) > > I beg to differ on this one. Having spend several weeks tracking down random processes dying on a > machine that turned out to be a bad sector in the swap partition, I have had great results by > running swap on a RAID-1. If you develop a bad sector in a non-mirrored swap, bad things happen > indeterminately and can be a royal PITA to chase down. It's just a little extra piece of mind. okay .... if the parts of disks is bad that is used for swap, mirroring might help ... but, i wonder, how/why the system used that portion of swap in the first place - even for raid, if sector-10 in swap is bad, why would raid keep trying to write there instead of to sector-1000 ( the systems should be writing data, and read it back to verify ( what it wrote to disk, not the disk cache, is the same as what ( it just read back, before it says, "data is written" and i spent days trackign down a bad memory ... that killed the raid ... - various backups the only reasonable way to make sure [supposedly good] data is not lost where backups does NOT overwrite previous[ly good] backups c ya alvin - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
