Hello, I am trying to understand how to calculate actual disk space on a logical volume. Based on the output below, how would I convert the total and free PPs to MB and GB? Thank you.
HTML Code:
# lsvg rootvg
VOLUME GROUP: rootvg VG IDENTIFIER: 000a8dac00004c00000000fca4046498
VG STATE: active PP SIZE: 128 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 1092 (139776 megabytes)
MAX LVs: 256 FREE PPs: 307 (39296 megabytes)
LVs: 18 USED PPs: 785 (100480 megabytes)
OPEN LVs: 17 QUORUM: 1
TOTAL PVs: 2 VG DESCRIPTORS: 3
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 2 AUTO ON: yes
MAX PPs per VG: 32512
MAX PPs per PV: 1016 MAX PVs: 32
LTG size: 128 kilobyte(s) AUTO SYNC: no
HOT SPARE: no BB POLICY: relocatable
# lsvg -p rootvg
rootvg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdisk0 active 546 232 11..00..03..109..109
hdisk3 active 546 75 15..00..02..00..58
When a disk is added to a VG it is sliced to pieces of PPsize. These pieces are then added to LVs, quasi one at a time.
Therefore, to find out how much space a disk in a vg provides you can calculate the number of PPs it provides times the size of one such PP.
If you want to know the raw disk size you could try the "size_in_mb" attribute in the device database. Not all disk types support this attribute, however. For example get the size of a 36GB SCSI disk used as "hdisk0":
Code:
root@aix_5_3 # lsdev -l hdisk0
hdisk0 Available 7M-08-00-8,0 16 Bit LVD SCSI Disk Drive
root@aix_5_3 # lsattr -F value -l hdisk0 -a size_in_mb
36400
You could also use the "bootinfo -s" command to get the diskspace. The results differ slightly from the output of "lsattr" because the one reports formatted and the other raw diskspace.
Version: Solaris 10 (August 2011) on VM
I am kind of new to Solaris.From VM workstation i allocated 35 GB to this Solaris VM's Disk
The disk was named
c1t0d0
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Regards
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I need to extend a FS in AIX but Im not sure on how to calculate the free space
Please advise if my math is correct:
-------PP SIZE: 64 megabyte(s)
--------TOTAL PPs: 1086 (69504 megabytes)
so the total size of volume is 64 * 1086 = 69504 MB (695GB)
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12-10-2008
