topic Re: Disk information in HPUX in Operating System - Linux

Disk information in HPUX

S N Raju — Wed, 11 Oct 2006 00:35:41 GMT

Hi all,

I am using statvfs structure in a sample program to get the disk used(f_blocks*f_frsize) and disk free(f_bfree) in a particular file system.What I found was that in HP_UX 11.0 ,the values returned by the structure are different from the values I get from command "df -k".In HPUX 11.11 the values shown are matching with "df -k" output.

Can any one clarify it?

Thank u all
raju

Re: Disk information in HPUX

Calandrello — Wed, 11 Oct 2006 07:30:51 GMT

the values that you this catching is in block and not in KB

Re: Disk information in HPUX

S N Raju — Thu, 12 Oct 2006 00:57:03 GMT

hi,

Thank u..Can i know how i can get this block data in kb.. right now i am considering block as byte and caluclating in kb. thank u for ur help

thanks,
raju

Re: Disk information in HPUX

Evert Ladrak — Thu, 12 Oct 2006 01:11:38 GMT

Hi Raju,

Normaly it's 512 bytes in a block.

- ETL

Re: Disk information in HPUX

S N Raju — Thu, 12 Oct 2006 03:43:45 GMT

Hi,
Thank u all,

I got the "fundamental block size" ie: 1024 from the "f_frsize" field in the statvfs structure.so,i have done
(f_blocks *f_frsize)/1024 to get the total size allocated for filesystem in KB.I got the value as 1496021.

But the "df -k" shows 1346418 (in kb).

please help me on this.

thanks,
raju

Re: Disk information in HPUX

S N Raju — Mon, 16 Oct 2006 23:09:53 GMT

Hi all,

can anyone tell me the structure i need to refer to get matched output as of "df -k".
As i mentioned earlier, i was not able to get the output as of "df -k".I was refering to statvfs structure..Can anyone help me on this.

thanks
raju

Re: Disk information in HPUX

S N Raju — Mon, 16 Oct 2006 23:49:54 GMT

Hi

Is the values in the structure "statvfs" gets updated accordingly or it caches the data.The output is not getting matched with df -k output.Which information I need to consideras the correct one, the structure data or the
df -k output?

please anyone clarify me

thanks,
raju

Re: Disk information in HPUX

Sandman! — Tue, 17 Oct 2006 00:08:59 GMT

man 4 fs_vxfs

Re: Disk information in HPUX

S N Raju — Tue, 17 Oct 2006 00:59:31 GMT

Hi sandman

I have checked the fs_vxfs man page. It seems to be for format of a vxfs file system. I checked the output of bdf -l.The value of total space allocated for a file system in the bdf -l output is mismatching the the df -k output.i am
confused to see diffrent values for the same field.Can i get a solution to have the correct values of the filesystem

thanks
raju

Re: Disk information in HPUX

Mohanasundaram_1 — Tue, 17 Oct 2006 01:40:55 GMT

Hi Raju,

If my memory serves me right, there is a bdf patch in HP-UX 11.00 to fix this mismatch between df and bdf outputs. PLease search for the patch in ITRC.

With regards,
Mohan.

Re: Disk information in HPUX

S N Raju — Tue, 17 Oct 2006 04:19:39 GMT

Hi all,

Thank u all for ur help and support.I found that df -k shows the f_bavail value in the statvfs structure,but not f_bfree value.

thanks,
raju