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Full Discussion: accidentally umount -a
Top Forums UNIX for Dummies Questions & Answers accidentally umount -a Post 302536543 by lramsb4u on Tuesday 5th of July 2011 05:35:14 PM
Old 07-05-2011
accidentally umount -a
Hi all,

I accidentally unmounted filesystems using umount -a command.

How to recover from this. Please help. Thanks in advance!

when i try to use mount -a i got the following output.

Code:
 
[root@lnx ~]# mount -a
mount: /dev/vg00/lvol05 already mounted or /opt busy
mount: /dev/vg00/lvol07 already mounted or /u01 busy
mount: /dev/cciss/c0d0p1 already mounted or /boot busy

following is the /etc/fstab file

Code:
 
[root@lnx ~]# more /etc/fstab
/dev/vg00/lvol00        /                       ext3    defaults        1 1
/dev/vg00/lvol02        /var                    ext3    defaults        1 2
/dev/vg00/lvol05        /opt                    ext3    defaults        1 2
/dev/vg00/lvol03        /usr                    ext3    defaults        1 2
/dev/vg00/lvol04        /tmp                    ext3    defaults        1 2
/dev/vg00/lvol06        /home                   ext3    defaults        1 2
/dev/vg00/lvol07        /u01                    ext3    defaults        1 2
LABEL=/boot             /boot                   ext3    defaults        1 2
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
/dev/vg00/lvol01        swap                    swap    defaults        0 0

below is the df command output

Code:
 
[root@lnx ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg00-lvol00
                      9.7G  404M  8.8G   5% /
/dev/mapper/vg00-lvol02
                      9.7G  320M  8.9G   4% /var
/dev/mapper/vg00-lvol03
                       20G  1.4G   18G   8% /usr
/dev/mapper/vg00-lvol04
                      9.7G  151M  9.1G   2% /tmp
/dev/mapper/vg00-lvol06
                      9.7G  195M  9.0G   3% /home

 

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LEARN ABOUT SUSE

lvremove

LVREMOVE(8)						      System Manager's Manual						       LVREMOVE(8)

NAME

       lvremove - remove a logical volume

SYNOPSIS

       lvremove  [-A|--autobackup y|n] [-d|--debug] [-f|--force] [-h|-?|--help] [--noudevsync] [-t|--test] [-v|--verbose] LogicalVolumePath [Logi-
       calVolumePath...]

DESCRIPTION

       lvremove removes one or more logical volumes.  Confirmation will be requested before  deactivating  any	active	logical  volume  prior	to
       removal.   Logical  volumes  cannot be deactivated or removed while they are open (e.g. if they contain a mounted filesystem).  Removing an
       origin logical volume will also remove all dependent snapshots.

       If the logical volume is clustered then it must be deactivated on all nodes in the cluster before it can be removed. A single lvchange com-
       mand issued from one node can do this.

OPTIONS

       See lvm(8) for common options.

       -f, --force
	      Remove active logical volumes without confirmation.

       --noudevsync
	      Disable  udev  synchronisation. The process will not wait for notification from udev.  It will continue irrespective of any possible
	      udev processing in the background.  You should only use this if udev is not running or has rules that ignore the devices	LVM2  cre-
	      ates.

EXAMPLES

       Remove the active logical volume lvol1 in volume group vg00 without asking for confirmation:

	    lvremove -f vg00/lvol1

       Remove all logical volumes in volume group vg00:

	    lvremove vg00

SEE ALSO

       lvcreate(8), lvdisplay(8), lvchange(8), lvm(8), lvs(8), lvscan(8), vgremove(8)

Sistina Software UK					 LVM TOOLS 2.02.67(2) (2010-06-04)					       LVREMOVE(8)
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