Neil Brown schrieb: > On Sun, 07 Feb 2010 14:38:18 +0100 > [...] > mdadm only checks the superblock at the start of the device to see if it > looks like an ext3 filesystem. So if an md array has a valid filesystem, > then it is very likely that at least one of the devices in the array will > appear to have a valid filesystem to mdadm. Indeed that makes perfect sense. > >[...] > > Maybe there was meant to be another layer between the md array and the > filesystem - maybe LVM ?? If there should have been an LVM and wasn't the > filesystem would definitely look very corrupt even though the superblock > might appear to be in the right place. > Well, there's no need to tell me - the guys in taiwan just don't do it on their NAS Devices. But thanks for the hint. I recall that the successful data-recoveries were on a Thecus N5200, which does indeed use lvm (to separate iSCSI-space, userspace, config-space, etc.) > > NeilBrown > Bottom-line: the customer's RAIDs were just f**ked, they should have had taken drive-health more seriously... And the Vendor's code should get "normalized" so that FS-checking in regular intervals takes place... Thanks for the help, Stefan Hübner -- 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
