Raw I/o Post: 302142095

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Operating Systems AIX Raw I/o Post 302142095 by bakunin on Wednesday 24th of October 2007 10:15:14 AM

10-24-2007

Registered User

The problem is there is not a single solution to this, so i give you a list of options you have in order of preferability (is this a word? english is not my native language):

SCSI-disk and native SSA-disks (not SSA-RAID-volumes, etc.) have an attribute called "size_in_mb", which you could read. Example: to get the size of hdisk0 you can type (and get this sample information for a 18GB disk)

Code:

# lsattr -El hdisk0 -a size_in_mb
size_in_mb 18200 Size in Megabytes False

If the disk in question is in a volume group you can find out with lspv like this (output is exemplary):

Code:

# lspv hdisk4
PHYSICAL VOLUME:    hdisk4                   VOLUME GROUP:     joker_int_vg
PV IDENTIFIER:      000bf05d981228ff VG IDENTIFIER     000bf05d95422f4d
PV STATE:           active                                     
STALE PARTITIONS:   0                        ALLOCATABLE:      yes
PP SIZE:            64 megabyte(s)           LOGICAL VOLUMES:  4
TOTAL PPs:          1093 (69952 megabytes)   VG DESCRIPTORS:   2
FREE PPs:           130 (8320 megabytes)     HOT SPARE:        no
USED PPs:           963 (61632 megabytes)    MAX REQUEST:      256 kilobytes
FREE DISTRIBUTION:  00..00..00..00..130                        
USED DISTRIBUTION:  219..219..218..218..89

you could also use bootinfo, BUT: bootinfo is usually only executable by root, whereas lsattr is executable by everybody AND the bootinfo command won't work on some disks.

I hope this helps.

bakunin

bakunin

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vxbootsetup

vxbootsetup(1M) 														   vxbootsetup(1M)

NAME

       vxbootsetup - set up system boot information on a Veritas Volume Manager disk

SYNOPSIS

       /etc/vx/bin/vxbootsetup [-g diskgroup] [medianame ... ]

DESCRIPTION

       The  vxbootsetup utility configures physical disks so that they can be used to boot the system. Before vxbootsetup is called to configure a
       disk, the required volumes, standvol, rootvol and swapvol (and optionally, dumpvol) must be created on the disk.  All of these volumes must
       be contiguous with only one subdisk.

       The -g option may be used to specify the boot disk group.

       If  no  medianame arguments are specified, all disks that contain usable mirrors of the root, swap, /usr and /var volumes are configured to
       be bootable.

       If medianame arguments are given, only the disks that are associated with the specified disk names are configured to be bootable.

       vxbootsetup requires that:

       o    The root volume must be named rootvol and must have a usage type of root.

       o    The swap volume must be named swapvol and must have a usage type of swap.

       o    The volumes containing /usr and /var (if any) must be named usr and var, respectively.

       See the chapter "Recovery from Boot Disk Failure" in the Veritas Volume Manager Troubleshooting Guide for detailed information on  how  the
       system boots and how VxVM impacts the system boot process.  The vxmirror, vxrootmir, and vxresize utilities call vxbootsetup automatically.
       If you use vxassist, or vxmake and vxplex to create mirrors of the root volume on a disk, you must run vxbootsetup explicitly to  make  the
       disk bootable.

ARGUMENTS

       medianame
	    Specifies the disk name (disk media name) of a VM disk that is to be configured as bootable.

SEE ALSO

       disksetup(1M),  edvtoc(1M),  vxassist(1M),  vxevac(1M),	vxinstall(1M),	vxintro(1M),  vxmake(1M),  vxmirror(1M), vxplex(1M), vxresize(1M),
       vxrootmir(1M)

       Veritas Volume Manager Troubleshooting Guide

VxVM 5.0.31.1							    24 Mar 2008 						   vxbootsetup(1M)