On Saturday March 22, pradeepjp@xxxxxxxxx wrote: > > > Where there any kernel message (view with 'dmesg') at this time? > > Mar 21 00:27:45 brahma kernel: md: invalid raid superblock magic on sdd > Mar 21 00:27:45 brahma kernel: md: sdd does not have a valid v0.90 superblock, not > importing! > Mar 21 00:27:45 brahma kernel: md: md_import_device returned -22 > So mdadm did try to assemble the array out of /dev/sdd. I wonder why. When it did that, it would have told the kernel to forget about all the partitions on /dev/sdd so they didn't confuse things. This is why /dev/sdd1 etc seem to disappear. > > > What is much more interesting, is that I rebooted the machine, and 'mdadm --examine' > started working again (producing output). > I then retried the 'mdadm -A' command and that went through as well. What do you mean exactly. Did it assemble the array correctly? > I cannot recall if the raid set was originally created on a 32 or a 64 bit O.S. It shouldn't make any difference. > > Is there any other diagnostic I can try ? Not sure... If the array is working now, I don't think there is a need to explore further. If it isn't, maybe strace -o /tmp/strace mdadm -v -A ...... immediately after a reboot might help (Attach "/tmp/strace"). NeilBrown -- 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
