On 2/7/2014 3:47 PM, Chris Stone wrote: > Sure, replace the bad drive and rebuild build the mirror. Or add 2 drives, > using one to replace the bad one and the other as a hot spare. Then if one > of the 2 drives in the mirror fails again, the hot spare will take over for > it. one thing thats always bugged me about md raid when its mirrored per partition... say you have /dev/sda{1,2,3} mirrored with /dev/sdb{1,2,3} ... if /dev/sdb2 goes south with too many errors and mdraid fails it, will it know that b{1,3} are also on the same physical drive and should be failed, or will it wait til it gets errors on them, too? -- john r pierce 37N 122W somewhere on the middle of the left coast