lv commands

[Sim Soon Huat_1]

Hi all. Would like to know is it a must to be in single user mode when executing lv commands like lvreduce, lvremove, lvextend .... etc?

Thanks!

[Tom Danzig]

No, it is not necessary.

[Steven Sim Kok Leong · Accepted solution]

Hi,

You are NOT required to be in single-user mode to run LVM commands such as lvcreate, lvextend and lvreduce, lvsplit or lvmerge etc.

However, to perform tasks such as extending (ie. extendfs) a HFS filesystem on an lvextend'ed LV, you need to un-mount the filesystem before running extendfs. If the HFS filesystem is a root filesystem such as /opt or /usr, then you will need to shutdown to single-user mode to perform the extendfs.

Hope this helps. Regards.

Steven Sim Kok Leong
Brainbench MVP for Unix Admin
http://www.brainbench.com

[Dan Hetzel]

Hi,

Here is a link to "An Introduction to the Logical Volume Manager" which could prove useful.

http://docs.hp.com/hpux/onlinedocs/B2355-90672/00/00/28-con.html

Best regards,

Dan