On 05/05/11 03:50, Olivier Cherrier wrote: ... > BTW, I setup a server with ALTROOT feature. After 3 months, the root > disk (where / lives) partially broke and the daily job screw up my > /dev/r$rootbak with the dd(1) command ... >
Welcome to the world of RAID. I suspect your intent on posting was "hey, altroot ain't so cool, look, it can fail!", but your REAL lesson should be, "be ready with a backup, RAID won't always save you". If you haven't seen similar failure mode in HW or SW "true" RAID, you have a few choices: 1: consider yourself lucky, 2: wait for it, 3: die soon (I suggest hoping for option 1, plan for option 2). One example: drive failed on machine. Replace drive. Remirror (in HW RAID) fails with message of something like "failure rebuilding new disk". Replace new disk, try again, same error. Repeat a few more times, until finally realizing the REAL problem was the remaining disk had an unreadable section on it, and THAT caused the remirror failure. At least you quickly understood what happened, we lost a couple evenings working on that one. Nick.
