> -----Original Message----- > From: NeilBrown [mailto:neilb@xxxxxxx] > Sent: Sunday, June 07, 2009 6:02 PM > To: lrhorer@xxxxxxxxxxx > Cc: linux-raid@xxxxxxxxxxxxxxx > Subject: Re: Unable to stop array > > On Mon, June 8, 2009 4:52 am, Leslie Rhorer wrote: > > > > I am trying to stop one of my arrays for maintenance, but it won't let > me. > > I've un-mounted the filesystem, but I still get the following: > > > > mdadm: fail to stop array /dev/md0: Device or resource busy > > > > How do I get the array to be free so I can stop it? > > > > Find out what is keeping it busy. > This is not always as easy as you might like. > You could: > > lsof /dev/md0 > to see if any process have it open Nope > grep md0 /proc/mounts > to see if it is still mounted Nope > grep md0 /proc/swaps > to see if it is in used for swap Nope (this drive never had a swap partition on it) > grep md0 /proc/mdstat > to see if it is included in some other md array Nope, just this one. It returns: Backup:/etc/gadmin-rsync/scripts# grep md0 /proc/mdstat md0 : active raid5 sde[7](S) sdf[0] sdd[5](F) sdc[4] sdb[3] sda[2] sdg[1] > ls -l /sys/block/md0/holders /sys/block/md0/*/holders > to see if dm is using it at all It shouldn't be: Backup:/etc/gadmin-rsync/scripts# ls -l /sys/block/md0/holders /sys/block/md0/*/holders ls: cannot access /sys/block/md0/*/holders: No such file or directory /sys/block/md0/holders: total 0 > grep loop /proc/partitions > to see if there are any loop devices. If there are, > one could conceivable be using it. Nope. > I cannot think off hand of anything else that might be using the > device. It seems to me this is reproducible whenever the mount is used for an NFS share. Even after unmounting the share on the remote system, the umount command won't release the mount on the local system unless one issues the -l switch, and then the array still won't stop. -- 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
