extending logical volume

[newunix]

new to unix

total disk size is 400 gb

4 physical volume 100 gb each

is it possiable to extend a logical volume more than 100 gb assigned to a physical volume

[Jestin John Chacko]

Hai...

For getting out of these confusions first get in to the concept of volume groups and logical volumes

this document may help you in this

http://docs.hp.com/en/B2355-90672/ch03s10.html

hope this will help you to get a basic idea

[Johnson Punniyalingam]

>>is it possiable to extend a logical volume more than 100 gb assigned to a physical volume>>>

more information like

# vgdisplay -v /dev/vg_name -> if you can post output

and which file system or logical volume you want to extend -> output we advice accordingly

# bdf /file_system_1 ..2 ..3 ..4

[Durvesh Mendhekar]

Hi,

Need more information

vgdisplay -v "vgname"
strings /etc/lvmtab

Regards,
Durvesh M.

[subodhbagade · Accepted solution]

Hi,

(1)Check whether you are having free space in your VG ( PE size * Free PE)

(2)Check who is accessing the LV using
#fuser â cu /mount point

(3)Unmount the LV
#umount lv_name
#kill â 9 pid if device is busy

(4)Extending LV
# lvextend â L final_size /dev/vg/lvname

(5)Extending FS
#extendfs â F /dev/vg/rlvol

(6)mount /mount_point

Above steps you can follow if you donot have online JFS

(7) With OnlineJFS you do not need to umount. Use fsadm instead:

# fsadm -b

(8)Each logical volume having limitation of logical extent i.e 655535 , beyond this you can not extend the LV.

Hopes this will help you to extend LV.


Regards,
Subodh.

[newunix]

hi subodhbagade

how to find out the max value of logical extent and how to find if online jfs installed

[Johnson Punniyalingam]

>>how to find out the max value of logical extent and <<

# lvdisplay -v /dev/vgxx/lvolxx -> can give you more information

man lvdisplay

>>how to find if online jfs installed <,

Example :-

# swlist -l product |grep -i jfs
JFS B.11.11 The Base VxFS File System
OnlineJFS B.11.11.03.03 Online features of the VxFS File System
PHKL_24026 1.0 JFS Filesystem swap corruption
PHKL_29115 1.0 JFS Direct I/O cumulative patch
PHKL_30366 1.0 JFS3.3;ACL patch
PHKL_34805 1.0 JFS3.3 patch; mmap
PHKL_35329 1.0 JFS3.3 edquota performance improvement
PHKL_35933 1.0 Panic extending JFS3.3 filesystem past 12

[subodhbagade]

Hi,

(1)Max value of LE of each LV is 65535 , you can get this value from

# vgdisplay â v /dev/vgname.

LV Name /dev/vg00/software
LV Status available/syncd
LV Size (Mbytes) 4416
Current LE 276
Allocated PE 276
Used PV 1


(2) Please refer below link for more info of online JFS


http://forums11.itrc.hp.com/service/forums/questionanswer.do?admit=109447626+1264412349946+28353475&threadId=1371631



Regards,
Subodh.

[Johnson Punniyalingam]

Online JFS - Package its Licensed product

[newunix]

is physical volume is like a disk or its a disk itself..