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Full Discussion: Determine space on a disk
Operating Systems AIX Determine space on a disk Post 302266824 by bakunin on Thursday 11th of December 2008 05:27:05 AM
Old 12-11-2008
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.

Code:
root@aix_5_3 # bootinfo -s hdisk0
34715

I hope this helps.

bakunin
 

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LEARN ABOUT CENTOS

installboot

installboot(1M) 														   installboot(1M)

NAME

       installboot - install bootblocks in a disk partition

SYNOPSIS

       installboot bootblk raw-disk-device

       The boot(1M) program, ufsboot, is loaded from disk by the bootblock program which resides in the boot area of a disk partition.

       The  ufs  boot objects are platform-dependent, and reside in the /usr/platform/platform-name/lib/fs/ufs directory. The platform name can be
       found using the -i option of uname(1).

       The installboot utility is a SPARC only program. It is not supported on the  architecture.  users should use installgrub(1M) instead.

       bootblk	       The name of the bootblock code.

       raw-disk-device The name of the disk device onto which the bootblock code is to be installed; it must be a character device which is  read-
		       able and writable. Naming conventions for a SCSI or IPI drive are c?t?d?s? and c?d?s? for an IDE drive.

       Example 1: Installing UFS Boot Block

       To install a ufs boot block on slice 0 of target 0 on controller 1 of the platform where the command is being run, use:

	      example# installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk 
		   /dev/rdsk/c1t0d0s0

       /usr/platform/platform-name/lib/fs/ufs

	   directory where ufs boot objects reside.

       /platform/platform-name/ufsboot

	   second level program to boot from a disk or CD

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

       od(1), uname(1), boot(1M), init(1M), kadb(1M), kernel(1M), monitor(1M), reboot(1M), rpc.bootparamd(1M), init.d(4), attributes(5)

WARNINGS

       The installboot utility fails if the bootblk or openfirmware files do not exist or if the raw disk device is not a character device.

								    11 Apr 2005 						   installboot(1M)
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