pst_lvinfo or request pst_diskinfo

[alessandro_37]

Dear all,
how can i use an C routine (pst_lvinfo) to have

logical volume name,
logical volume total space amount
logical volume total space used
logical volume total space free

I have checked pst_lvinfo [ pstat_getlv() ] and pst_diskinfo [pstat_getlv] C routine, but i haven't find the solution

Someone can help me please?

[Dietmar Konermann · Accepted solution]

Alessandro,

I'm afraid you won't be able to get this from pstat().

The LV Name is unknown to the kernel. So You would need to look at the name of the device special file assiciated to it. This is what the LVM commands do also, BTW.

Concerning the LV size... use stat64(2). Concerning the /used/free information... if you are talking about LVs with file systems, you could have a look at statvfs(2).

Best regards...
Dietmar.