Re: find hdisk given a filename

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Date:         Tue, 28 Dec 2004 07:25:46 -0800
To: aix-l@Princeton.EDU

say ANY block....

-----Original Message-----
From: Simon Marchese [mailto:simon_marchese@UK.IBM.COM]
Sent: Monday, December 27, 2004 6:18 PM
To: aix-l@Princeton.EDU
Subject: Re: find hdisk given a filename

Which block of the file are you interested in? This is a serious question.

"Leyden, Joseph" <LeydenJ@METRO.NET>
Sent by: IBM AIX Discussion List <aix-l@Princeton.EDU>

27/12/2004 19:26

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Re: find hdisk given a filename

Does this mean if there are 10 hdisks in a logical volume
I have no way of finding out where a particular filename reside?

It seems that some lower level command should be able to show this.

Joe
-----Original Message-----
From: Justin Bleistein [mailto:justin.bleistein@TOWERSPERRIN.COM]
Sent: Monday, December 27, 2004 11:11 AM
To: aix-l@Princeton.EDU
Subject: Re: find hdisk given a filename

I'm assuming you mean, you want to know what physical hard disk a file like:
"/etc/hosts" resides on?
To figure that out find out which filesystem the file is on (considering you
know the fully qualified pathname of the file "i.e. - /etc/hosts":

# cd /etc
# ls -l hosts
info on hosts file...
#

Now check the filesystem you are currently in, the filesystem/directory to
file lives:

# df -k .
/dev/hd4 xx xx xx xx xx /
#

Now the directory: "/etc/" which lives on filesystem: "/" which sits on
logical volume: "/dev/hd4". Now you must find out
what physical hard disk(s) the "/dev/hd4" logical volume lives on:

# lslv -l hd4 (hd4 - being the logical volume name):

PV COPIES IN BAND DISTRIBUTION
hdisk0 001:000:000 100% 001:000:000:000:000
hdisk1 001:000:000 100% 001:000:000:000:000

Under the PV column will be the name of the hdisk the logical volume: "hd4"
resides on. Then just trace that back to the file in
the same hierarchy I explained earlier. Now the list of two physical
volumes/disks means this logical volume is either mirrored
or is soo big that it spans multiple disks.

Hope this helps.
Thanks.

--Justin Richard Bleistein
AIX Systems Administrator

"Leyden, Joseph" <LeydenJ@METRO.NET>
Sent by: IBM AIX Discussion List <aix-l@Princeton.EDU>

12/27/2004 01:43 PM

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Re: find hdisk given a filename

Is there a command to find out which hdiskXX a particular file belong to?
thank you in advance ...

Joe

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