get volume status function

[anat heilper]

Hi,
I'm trying to find a function(like lvdisplay, but through C code) that get the status of a device ( volume), weather it is online/offline according to it's major and minor number. Is there such functions?
Thaks,
anat

[Ivan Ferreira]

Maybe your best option is to check the lvdisplay/lvs source code. This is why the open source world is too great.

Cheers.

[Stuart Browne]

That, or you could start with an 'strace lvdisplay /dev//', and see if that gives you any clues.

..

unfortunately, my test box at home which has LVM is LVM 1, so it's rather different.. All my LVM2 boxes aren't using LVM.. Go figure.. ;)

[rajdev]

Hi,

I am not sure what you are actually looking, but there is a pstat interface which can give you a lot of status information on processes,disk,lv,memory etc.

see the following for details :
man pstat
/usr/include/sys/pstat.h
/usr/include/sys/pstat/*
pstat_getlv
pstat_getdisk

Regards,
RD

[anat heilper]

Hi, on linux i don't see no man entry for pstat nor the include files that you mentioned

[Vitaly Karasik_1]

Shalom, Anat,

AFAIK, pstat is HP-UX specific utility.

As for your question - I suggest you to ask it on some LVM forum/maillist, see for more info http://www.ibm.com/developerworks/library/l-lvm2/?ca=dgr-lnxw02aLinuxLVM2&S_TACT=105AG