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Determine Disk Total

Mushy_1
Occasional Advisor

Determine Disk Total

Hi!

We are using Tru64 Unix to house one of our applications. Also, we have a Storage Area Network that handles the disk requirements of the system. So, we allocated part of the SAN to this Unix server. As i use the df -k command, i get to see all the file systems but then the total size of the filesystems does not equal size that i allocated from SAN. Could there be any other part that i do not see in 'df -k' command?
Life and Death are in the power of the tongue!
11 REPLIES
Michael Schulte zur Sur
Honored Contributor

Re: Determine Disk Total

Hi,

it depends on. ADVFS uses some space for internals. Is the difference big? Sometimes there a files hidden behind a mount point.

greetings,

Michael
Mushy_1
Occasional Advisor

Re: Determine Disk Total

Hi! im not sure if i am doin the right computation. But here's the output of the df -k command. Please help me determine the total. Thanks!

filesystem % Used Used Available
poidata2/oracle2 77.00% 28941859 8819608
poidata2/poiprog 1.00% 70450 8819608
poidata2/temp 21.00% 2271423 8819608
poidata2/tmp 1.00% 32 8819608
poidata2/archive 3.00% 191920 8819608
poidata2/backup 1.00% 43 8819608
poidata2/export 91.00% 88114232 8819608
poidata2/gbss 76.00% 27170969 8819608
poidata2/poidata2 92.00% 97994488 8819608
poidata2/gbssdata 85.00% 49909346 8819608
poidata/poidata 98.00% 132456778 3848160
poindx/poindx 96.00% 70108944 3092336
Life and Death are in the power of the tongue!
Mulgund
Frequent Advisor

Re: Determine Disk Total

>> poidata2/oracle2 77.00% 28941859 8819608

That will be around 36GB.
Is that the LUN size you have allocated?
Michael Schulte zur Sur
Honored Contributor

Re: Determine Disk Total

Hi,

to it is roughly 290-300GB

Michael
Michael Schulte zur Sur
Honored Contributor

Re: Determine Disk Total

Hi again,

that was used only.
Total is roughly 373GB

Michael
Mushy_1
Occasional Advisor

Re: Determine Disk Total

thanks so much for the help. so i am right in computing the total disk space approx 360GB. However, disk allocated to the server from SAN is 741GB. where could the other be?

Life and Death are in the power of the tongue!
Ivan Ferreira
Honored Contributor

Re: Determine Disk Total

Please post the full output (Better if you attach a txt file) of the following commands:

hwmgr v d
hwmgr show scsi
ls /etc/fdmns/*
df -k
swapon -s
showfdmn

Where is the name of every domain listed in the output of df.
Por que hacerlo dificil si es posible hacerlo facil? - Why do it the hard way, when you can do it the easy way?
Michael Schulte zur Sur
Honored Contributor

Re: Determine Disk Total

Mushy,

this is roughly half of your size. Can it be that you have to divide it by 2 for raid 1?

Michael
Mushy_1
Occasional Advisor

Re: Determine Disk Total

Hi!

Again, thanks for responding to my inquiries. I got all the data that you asked me to save. Can you please look at it? We are using RAID 5. Yes, you are right that the total size that we got is half of what i expect. Does it have something to do with unmounted file systems? I really appreciate your help.. Thanks again!
Life and Death are in the power of the tongue!
Michael Schulte zur Sur
Honored Contributor

Re: Determine Disk Total

Hi,

the first output you posted is not really the output of df. The capacity column is missing and the domains are displayed like
root_domain#root
What kind of SAN are you using?

greetings,

Michael
Ivan Ferreira
Honored Contributor

Re: Determine Disk Total

Hi, after analyzing your attached file, I didn't found a match for the following disks:

/dev/disk/dsk9c DGC RAID 5 IDENTIFIER=1

/dev/disk/dsk14c DGC RAID 5 IDENTIFIER=2

/dev/disk/dsk22c DGC RAID 5 IDENTIFIER=0

It seems that these disks are presented to this system but they are not used.

1- If the disks are presented only to this system, they are not used and should be investigated. Maybe used as raw device for database?

2- If the disks are presented only to this system, and disklabel -rw dskX does not shows a label, the disks are not being used.

2- If the disks are presented to other system, remove the presentation for this system.
Por que hacerlo dificil si es posible hacerlo facil? - Why do it the hard way, when you can do it the easy way?