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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 V7

vgimportclone

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

NAME

       vgimportclone - import and rename duplicated volume group (e.g. a hardware snapshot)

SYNOPSIS

       vgimportclone [-n|--basevgname VolumeGroupName] [-i|--import] PhysicalVolume [PhysicalVolume...]

DESCRIPTION

       vgimportclone is used to import a duplicated VG (e.g. hardware snapshot).  Duplicate VG(s) and PV(s) are not able to be used until they are
       made to coexist with the origin VG(s) and PV(s).  vgimportclone renames the VG associated with the specified PV(s) and changes the  associ-
       ated VG and PV UUIDs.

OPTIONS

       See lvm for common options.

       -n|--basevgname VolumeGroupName
	      By  default  the	snapshot  VG  will be renamed to the original name plus a numeric suffix to avoid duplicate naming (e.g. 'test_vg'
	      would be renamed to 'test_vg1').	This option will override the base VG name that is used for all  VG  renames.	If  a  VG  already
	      exists with the specified name a numeric suffix will be added (like the previous example) to make it unique.

       -i|--import
	      Import exported Volume Groups.  Otherwise VGs that have been exported will not be changed (nor will their associated PVs).

ENVIRONMENT VARIABLES

       LVM_BINARY
	      The LVM2 binary to use.  Defaults to "lvm".

EXAMPLES

       The  origin VG vg00 has origin PVs /dev/sda and /dev/sdb and the respective snapshot PVs are /dev/sdc and /dev/sdd.  To rename the VG asso-
       ciated with /dev/sdc and /dev/sdd from vg00 to vg00_snap (and to change associated VG and PV UUIDs) do:

	    vgimportclone --basevgname vg00_snap /dev/sdc /dev/sdd

SEE ALSO

       lvm(8)

Red Hat, Inc.						 LVM TOOLS 2.02.95(2) (2012-03-06)					  VGIMPORTCLONE(8)
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