Greetings -
Ok, I made a mistake that I need to fix. Fortunately it is not a destructive mistake, but I need some advice on how to correct the problem.
CentOS 6.3 host system named Earth
I was creating some new logical volumes within my exiting volume group for a new virtual machine using the LVM GUI. When I created the LV that I plan to use for root partition of the new VM (Bacteria) I mistakenly clicked on the box to mount the LV, and specified the mount point as /.
[root@earth ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_mei-lv_earthroot 5.0G 3.9G 880M 82% / tmpfs 5.9G 276K 5.9G 1% /dev/shm /dev/sda1 485M 116M 344M 26% /boot /dev/mapper/vg_mei-lv_earthvar 3.0G 748M 2.1G 27% /var /dev/mapper/vg_mei-lv_bacteriaroot 5.0G 3.9G 880M 82% /
I tried to unmount the device, but as shown below, it is busy.
[root@earth ~]# umount /dev/mapper/vg_mei-lv_bacteriaroot umount: /: device is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1))
I tried to force unmount the device, but that failed also.
[root@earth ~]# umount -f /dev/mapper/vg_mei-lv_bacteriaroot umount2: Device or resource busy umount: /: device is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1)) umount2: Device or resource busy
What other options are there. Is there are way to get this unmounted without having to shutdown my host system and boot into rescue mode. I don't really want to shutdown my active VM's while other staff are working on them right now.
Please cc me directly as I only receive the daily digest. Thanks.
Jeff Meridian Environmental