HP-UX tutorial on a Linux website? why not…
To take a break, I decided to post a tutorial here on Creating and Extending LV on HP-UX. It’s better for me to post it here so it will serve my guide once I get my hands again on HP-UX servers. This is the one I used when my colleague asked me to check if I can find a way to increase the Filesystem of these servers. Here it is:
To create the LV on HP-UX server
1.verify first if JFS is online (if online, no need to mount/unmount so no downtime)
# swlist -l product | grep -i online
OnlineJFS01 4.1.008 Online features of the VxFS File System
2. verify if there’s avail space
#bdf
#vgdisplay
e.g.
PE Size (Mbytes) 32
Total PE 8692
Alloc PE 4618
Free PE 4074
FreePE X PE Size = 4074 X 32 = 130GB
3. To create let say a 2GB
#lvcreate -L 2048 -n lv_back /dev/vg00
Logical volume “/dev/vg00/lv_back” has been successfully created with
character device “/dev/vg00/rlv_back”.
Logical volume “/dev/vg00/lv_back” has been successfully extended.
Volume Group configuration for /dev/vg00 has been saved in /etc/lvmconf/vg00.conf
4. create filesystem,
# newfs -F vxfs /dev/vg00/rlv_back
version 6 layout
2097152 sectors, 2097152 blocks of size 1024, log size 16384 blocks
largefiles supported
5.create dir and mountpoint
#mkdir /backup
#mount /dev/vg00/lv_back /backup
6.check the new LV
#bdf
To enable mirroring
1. verify status
# vgdisplay -v | grep PV
2. check LV
#lvdisplay -v /dev/vg00/lv_back
00125 /dev/dsk/c2t1d0s2 02242 current
00126 /dev/dsk/c2t1d0s2 02243 current
only writing to c2t1d0s2
compare to others,
2. check LV
#lvdisplay -v /dev/vg00/lv_vol03
LE PV1 PE1 Status 1 PV2 PE2 Status 2
00000 /dev/dsk/c2t1d0s2 00312 current /dev/dsk/c2t0d0s2 00312 current
writing on both c2t1d0s2 and c2t0d0s2
3. to mirror
# lvextend -m 1 /dev/vg00/lv_back /dev/dsk/c2t0d0s2
The newly allocated mirrors are now being synchronized. This operation will
take some time. Please wait ….
Extend LV on HP-UX server
Since HP-UX server JFS is online, then we use this procedure
1. example, to extend 2G to 20GB
#lvextend -L 20480 /dev/vg00/lv_back
# fsadm -F vxfs -b 20480M /backup
2.verify
#bdf
If server has no online JFS, procedure as follows:
root@darwin-ux [/]
# umount /backup
root@darwin-ux [/]
# lvextend -L 20480 /dev/vg00/lv_back
Logical volume “/dev/vg00/lv_back” has been successfully extended.
Volume Group configuration for /dev/vg00 has been saved in /etc/lvmconf/vg00.conf
root@darwin-ux [/]
# extendfs -F vxfs /dev/vg00/rlv_back
root@darwin-ux [/]
# mount /dev/vg00/lv_back /backup
root@darwin-ux [/]
# bdf /backup
Filesystem kbytes used avail %used Mounted on
/dev/vg00/lv_back 4194304 18118 3915182 0% /backup
root@darwin-ux [/]
Finally, put on /etc/fstab , so it will auto mount even after reboot
add:
/dev/vg00/lv_back /backup vxfs delaylog 0 2
Enjoy 🙂
I am new to HP-UX still could extend file system.
excellent article.
No problem pushpa. Thanks for dropping by. 🙂
Not usefull you should tell from starting from PV to LV, suppose we dont have JFS then.
its really good.
i have a small dought ca i change the parameter PE Size (Mbytes) 32
if it is possible how to change this.
thanks in advance.
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