lvm question

[navin]

how do i remove a physical disk path from lvmtab file

[kemo]

hi

check this thread, it can help ..

http://forums11.itrc.hp.com/service/forums/questionanswer.do?admit=109447626+1243031985423+28353475&threadId=1254676


Thanks
Kamal

[Patrick Wallek]

Remove it from the volume group.

[Nido]

Hi,

Remove the physical volume from the Volume group, move old /etc/lvmtab file to other location and run vgscan again to have new lvmtab in place.

Thanks,

[Kranti Mahmud]

Hi Navin,

Check the attached doc.

Rgds-Kranti

[R.K. #]

Hi Navin,

In order to remove only one disk from lvmtab, you can simply do:
# vgreduce vgXX /dev/dsk/cxtydz

If the disk is not responding or giving trouble, you use:
# vgreduce -f vgXX <== this will reduce missing PV from a VG

If you want to remove all the disks in a VG, that is you no longer need a VG, use following command to get rid of that VG permanently:
# vgexport vgXX


See man page of above commands for more options.

Hope this helps.

Regds,
R.K.

[Taifur]

Hi Navin,

Follow the below steps,

If lvm is created , then
#umount /mountpont
#lvremove -f /dev/vgxx/lvyy
#vgchange -a n /dev/vgxx

Remove physical volume /dev/dsk/cxtxdx from volume group /dev/vgxx:

#vgreduce /dev/vgxx /dev/dsk/cxtxdx
Force reduction of missing PVs from volume group: vg01

#vgreduce -f /dev/vgxx

After that check
#strings /etc/lvmtab

or,
Export the volume group /dev/vg01 into mapfile vg01.mymap. The volume group will be removed from the exporting system.

#vgexport -m vgxx.mymap /dev/vgxx

http://docs.hp.com/en/B3921-60631/vgreduce.1M.html

http://docs.hp.com/en/B2355-60103/vgexport.1M.html

Rgds//
Taifur

[Sajjad Sahir]

Dear Navin


Please see the link


http://docs.hp.com/en/5992-4616/ch03s01.html

thanks and regards

Sajjad Sahir

[Suraj K Sankari]

Hi,

You can use "vgexport" "vgreduce" or "sam" to remove physical disk.

Suraj

[Johnson Punniyalingam]

>>>how do i remove a physical disk path from lvmtab file<<<

# vgreduce /dev/ /dev/dsk/cxtxdx

# vgexport /dev/



# cp -pi /etc/lvmtab /etc/lvmtab.old

# mv /etc/lvmtab /etc/lvmtab.16april2006

# /usr/sbin/vgscan -v

Thanks,
Johnson