On Mon, Dec 22, 2003 at 04:10:27PM -0600, P. Larry Nelson wrote: > I've been using LVM now since sometime this past summer and > everything has worked great and as advertised, until I tried > to unmount a logical volume. And this happens on both RedHat > 9 and ES_3. > > I had occasion the other day to unmount one of the mounted raid > arrays in order to upgrade some firmware. When I tried to do an > unmount command, I got "device is busy". Ok, I'm cd'd there > from one of my windows or something, so I make sure all open > terminal windows are *not* cd'd there. Redo the umount command > with same result. Weird, something's got a file open. So, I did > an lsof command and grep for the device (/dev/VG1/LV1). Nothing. > I try greping for the mount name (/scratch/cdf). Nothing. > It will not let me unmount the logical volume. > > The system in question is running RedHat 9 w/kernel 2.4.20-24.9smp > with RedHat's lvm-1.0.3-12. I just so happened to have built > another system using RedHat's ES_3 w/kernel 2.4.21-4.0.1.ELsmp and > their lvm-1.0.3-15, so I thought I'd try it there. Built an identical > logical volume, mounted it, tested it (works fine), tried to umount > the filesystem with identical results: device is busy. Checked > again using lsof. Nothing open on the mounted filesystem. > > I went checking back thru about 4 months of this list and saw > (apparently) that no one else has this problem. At this point > I'm a bit baffled why the umount command isn't working. I've > also seen nothing that might address this in the LVM-HOWTO. > Then again, I could have missed it. > > Ideas? maybe some kernel service is holding a reference to that device, nfs or samba server comes to mind, just try to disable them one after the other and see if umount will work ... HTH, Herbert > > Thanks! > -- > P. Larry Nelson (217-244-9855) | Systems/Network Administrator > 461 Loomis Lab | U of I, CITES Departmental Services > 1110 W. Green St., Urbana, IL | Consultant to: High Energy Physics Group > MailTo:lnelson@uiuc.edu | http://www.uiuc.edu/ph/www/lnelson > ------------------------------------------------------------------------- > "Information without accountability is just noise." - P.L. Nelson > > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
