Disk size

[N. Man]

Hi,
first please forgive me if I come up with stupid questions but I'm not an HP-UX professional.

My question is this: how can I find out what's the size of the HDD(s) in HP-UX and how much of the HDD(s) is empty. I tried the "df" command and this is the result:

root:/ df
/archive (/dev/vg00/lvol11 ): 1715424 blocks 228704 i-nodes
/db01 (/dev/vg01/lvol1 ): 5790542 blocks 772055 i-nodes
/db02 (/dev/vg01/lvol2 ): 3448022 blocks 459716 i-nodes
/db03 (/dev/vg01/lvol3 ): 4315920 blocks 575436 i-nodes
/db04 (/dev/vg01/lvol5 ): 9892158 blocks 1315951 i-nodes
/db05 (/dev/vg01/lvol6 ): 5821336 blocks 776157 i-nodes
/home (/dev/vg00/lvol7 ): 575858 blocks 76755 i-nodes
/hometest (/dev/vg01/lvol10 ): 540884 blocks 72113 i-nodes
/opt (/dev/vg00/lvol8 ): 1309766 blocks 174618 i-nodes
/tmp (/dev/vg00/lvol4 ): 929632 blocks 14628 i-nodes
/users (/dev/vg01/lvol7 ): 2966788 blocks 395533 i-nodes
/usr/oracle (/dev/vg00/lvol10 ): 691394 blocks 92143 i-nodes
/usr (/dev/vg00/lvol5 ): 2408944 blocks 37921 i-nodes
/var (/dev/vg00/lvol9 ): 7136512 blocks 112361 i-nodes
/stand (/dev/vg00/lvol1 ): 801632 blocks 53201 i-nodes
/ (/dev/vg00/lvol3 ): 939392 blocks 14775 i-nodes

Thank you.

[Ivan Krastev]

You have LVM logical volumes in 2 volume groups.

To see disks in groups use:
#vgdisplay -v vg00 (or vg01)

to check logical volume size:

lvdisplay -v /dev/vg00/lvol1 (for example).
Check with bdf or in /etc/fstab where are mounted all logocal volumes.

regards,
ivan

[N. Man]

root:/ vgdisplay -v vg00
--- Volume groups ---
VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 10
Open LV 10
Max PV 16
Cur PV 1
Act PV 1
Max PE per PV 4350
VGDA 2
PE Size (Mbytes) 4
Total PE 4340
Alloc PE 4185
Free PE 155
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

--- Logical volumes ---
LV Name /dev/vg00/lvol1
LV Status available/syncd
LV Size (Mbytes) 500
Current LE 125
Allocated PE 125
Used PV 1

LV Name /dev/vg00/lvol2
LV Status available/syncd
LV Size (Mbytes) 4096
Current LE 1024
Allocated PE 1024
Used PV 1

LV Name /dev/vg00/lvol3
LV Status available/syncd
LV Size (Mbytes) 500
Current LE 125
Allocated PE 125
Used PV 1

LV Name /dev/vg00/lvol4
LV Status available/syncd
LV Size (Mbytes) 500
Current LE 125
Allocated PE 125
Used PV 1

LV Name /dev/vg00/lvol5
LV Status available/syncd
LV Size (Mbytes) 2000
Current LE 500
Allocated PE 500
Used PV 1

LV Name /dev/vg00/lvol7
LV Status available/syncd
LV Size (Mbytes) 1000
Current LE 250
Allocated PE 250
Used PV 1

LV Name /dev/vg00/lvol8
LV Status available/syncd
LV Size (Mbytes) 1024
Current LE 256
Allocated PE 256
Used PV 1

LV Name /dev/vg00/lvol10
LV Status available/syncd
LV Size (Mbytes) 1500
Current LE 375
Allocated PE 375
Used PV 1

LV Name /dev/vg00/lvol9
LV Status available/syncd
LV Size (Mbytes) 4596
Current LE 1149
Allocated PE 1149
Used PV 1

LV Name /dev/vg00/lvol11
LV Status available/syncd
LV Size (Mbytes) 1024
Current LE 256
Allocated PE 256
Used PV 1


--- Physical volumes ---
PV Name /dev/dsk/c1t6d0
PV Status available
Total PE 4340
Free PE 155
Autoswitch On

[N. Man]

root:/ lvdisplay -v /dev/vg00/lvol1
--- Logical volumes ---
LV Name /dev/vg00/lvol1
VG Name /dev/vg00
LV Permission read/write
LV Status available/syncd
Mirror copies 0
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 500
Current LE 125
Allocated PE 125
Stripes 0
Stripe Size (Kbytes) 0
Bad block off
Allocation strict/contiguous
IO Timeout (Seconds) default

--- Distribution of logical volume ---
PV Name LE on PV PE on PV
/dev/dsk/c1t6d0 125 125

--- Logical extents ---
LE PV1 PE1 Status 1
00000 /dev/dsk/c1t6d0 00000 current
00001 /dev/dsk/c1t6d0 00001 current

[N. Man]

I ran the 2 commands ... how can you tell the size of the HDD(s)?

"Check with bdf or in /etc/fstab where are mounted all logocal volumes" (??!!)
Not sure :(( what you mean ... please explain.

[Fred Ruffet]

disks are physical volume (PV). At end of each vgdisplay -v, you have the list of PVs, with their size in physical extents (PE). At begining of the vgdisplay -v, youhave the PE size for the volume group in MB. As simple as a multiplication.

As you have two vg, issue "vgdisplay -v vg00" and "vgdisplay -v vg01".

According to what you sent, the first disk size is 4340 PE, with a PE size of 4MB. So the disk is 18GB (real 17GB). Do the same with VG01 to know the others.

[N. Man]

See below ... so the size of my HDD(s) is this:
a) 4,340 x 4 = 17.36 Gb
b) 19,610 x 4 = 78.44 Gb

Correct?

And the free Gb using the same logic ("Free PE" in this case" would be:
a) 155 x 4 = 0.62 Gb
b) 5,879 x 4 = 23.56 Gb

Correct?


root:/ vgdisplay -v vg01
--- Volume groups ---
VG Name /dev/vg01
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 10
Open LV 8
Max PV 16
Cur PV 1
Act PV 1
Max PE per PV 19614
VGDA 2
PE Size (Mbytes) 4
Total PE 19610
Alloc PE 13731
Free PE 5879
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

[Patrick Wallek]

Correct.

BUT, to see how much free space you have in your FILESYSTEMS, issue the 'bdf' command.

The space free on each disk is what is left that CAN BE ASSIGNED to a logical volume. It has nothing to do with how much space is available in each LV/filesystem.

[Ivan Krastev]

For physical disk size use diskinfo:

# diskinfo /dev/rdsk/c1t6d0

Note, that /rdsk/ instead of dsk devices are used.

regards,
ivan

[N. Man]

See below ...



root:/ bdf
Filesystem kbytes used avail %used Mounted on
/dev/vg00/lvol3 512000 38672 469696 8% /
/dev/vg00/lvol1 491952 41936 400816 9% /stand
/dev/vg00/lvol9 4706304 1110056 3568264 24% /var
/dev/vg00/lvol5 2048000 834072 1204472 41% /usr
/dev/vg00/lvol10 1536000 1167424 345697 77% /usr/oracle
/dev/vg01/lvol7 3276800 1695896 1482241 53% /users
/dev/vg00/lvol4 512000 43568 464816 9% /tmp
/dev/vg00/lvol8 1048576 350103 654883 35% /opt
/dev/vg01/lvol10 1048576 760120 270442 74% /hometest
/dev/vg00/lvol7 1024000 716968 287931 71% /home
/dev/vg01/lvol6 5120000 2015357 2910668 41% /db05
/dev/vg01/lvol5 8192000 2928185 4946079 37% /db04
/dev/vg01/lvol3 7168000 4866242 2157960 69% /db03
/dev/vg01/lvol2 7168000 5329121 1724011 76% /db02
/dev/vg01/lvol1 7168000 4079776 2895271 58% /db01
/dev/vg00/lvol11 1048576 120305 870321 12% /archive

[N. Man]

Let me tell you what I want to do, by the way, I'm a .net/web developer :))
- I have a second Unix box machine almost identical
- I want to assign a fix IP address to the second machine (without to connect this to the network because right now I don't know the second Unix box IP)
- connect it to the network
- change the existing HDD(s) of the second machine to bigger HDD(s), right now they are very small
- add a tape backup device to the second machine (doesn't have one now)
- be able to take the backup tape from the first Unix box (backup that ran overnight) and recover everything to the second Unix box
-------------------------

So at the end I have a 100% backup strategy.

[Ivan Krastev · Accepted solution]

For this backup strategy you will need to install IgniteUX tape recovery tools.
See more documentation at docs.hp.com about Ignite.

In general look for make_tape_recovery.

If you want to make a complete system backup calculate the size of all used space in both volume groups and choise a bigger device/tape.

And after all take a look here about point system - http://forums11.itrc.hp.com/service/forums/helptips.do?#33


regards,
ivan