If the array doesn't show in /proc/mdstat then you can't perform actions on it. The array has to be active to do that. Do you know disks/partitions belong to that array? Try to assemble the array (without resyncing if possible). I suggest you dig around and find why the array stopped first. On Tue, Sep 15, 2009 at 8:34 PM, <aristizb@xxxxxxxxxxx> wrote: > Hi. > > I have several raids created on my Linux box and one of them has disappeared > from /proc/mdstat. > > The devices part of this raid are logical volumes and work fine. > > When I try to fail one of the devices from the raid I get the following > message: > $mdadm /dev/md1744 --fail /dev/storage/disk1 > > mdadm: cannot get array info for /dev/md1744 > > > This message is different form the one you get when the raid has not been > created: > mdadm: error opening /dev/mdXX: No such file or directory. > > So md1744 must still in some sense, even though it was not listed in > /proc/mdstat > > The system where I hit this problem has enough RAM and is not being heavily > utilized. > > > I am using mdadm version 2.6.3 on Ubuntu kernel 2.6.24-24. > > > Any ideas on this issue are highly appreciated. > > > Juan Aristizabal > -- > 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 > -- Majed B. -- 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