Re: Busy inodes after umount

From: Ragnar Kj°rstad (xfs@ragnark.vestdata.no)
Date: Thu Jul 19 2001 - 18:53:43 EST


On Thu, Jul 19, 2001 at 04:22:07PM -0400, Christian, Chip wrote:
> I found the same thing happening. Tracked it down in our case to using fdisk to re-read disk size before mounting. Replaced it with "blockdev --readpt" and the problem seems to have gone away. YMMV.

I've now been able to reproduce:

* make a filesystem
* mount it
* export it (nfs)
* mount on remote machine
* lock file (fcntl)
* unexport
* unmount

Then you get the VFS message about self-destruct. Tested with both ext2
and xfs.

The lock is still present in /proc/locks after the umount.

With ext2 I can remount the filesystem successfully, but with XFS I get
the message about duplicate UUIDs and the mount failes. I believe this is a totally
different problem from the one you were experiencing. (and blockdev doesn't help for me)

I suppose this is a generic kernel bug?

-- 
Ragnar Kjorstad
Big Storage

> [root@ha2 /root]# mkfs -t xfs -f /dev/sdb1 > meta-data=/dev/sdb1 isize=256 agcount=51, agsize=262144 > blks > data = bsize=4096 blocks=13305828, > imaxpct=25 > = sunit=0 swidth=0 blks, unwritten=0 > naming =version 2 bsize=4096 > log =internal log bsize=4096 blocks=1624 > realtime =none extsz=65536 blocks=0, rtextents=0 > [root@ha2 /root]# mount -t xfs /dev/sdb1 /mnt/raid/ > [root@ha2 /root]# umount /mnt/raid/ > [root@ha2 /root]# mount -t xfs /dev/sdb1 /mnt/raid/ > mount: wrong fs type, bad option, bad superblock on /dev/sdb1, > or too many mounted file systems > > > >From /var/log/messages: > Jul 19 12:27:15 ha2 kernel: Start mounting filesystem: sd(8,17) > Jul 19 12:27:16 ha2 kernel: Ending clean XFS mount for filesystem: sd(8,17) > Jul 19 12:27:19 ha2 kernel: XFS unmount got error 16 > Jul 19 12:27:19 ha2 kernel: linvfs_put_super: vfsp/0xc2ff71e0 left dangling! > Jul 19 12:27:19 ha2 kernel: VFS: Busy inodes after unmount. Self-destruct in 5 seconds. Have a nice day... > Jul 19 12:27:21 ha2 kernel: XFS: Filesystem has duplicate UUID - can't mount > > > This happens on a shared storage cluster with two nodes. The same thing > happens on both nodes. (I'm only using the device from one device at the > time) > > linux-2.4.5 with XFS patch from 06112001. > > After a reboot it works again, and I have not been able to reproduce > yet. It first happened when I was testing NFS locks, so it could be > related to that. > > > > -- > Ragnar Kjorstad > Big Storage - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/



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