Finally on aix 6.1 ibm have introduced mounting of iso directly without raw copy on lv:
Check if necessary loopback device is available
# lsdev -C | grep loop
if nothing returned, run:
# mkdev -c loopback -s node -t loopback
loop0 Available
If the device is not present on system you get this error:
1320-003 loopmount: Specified loopback device is not found in ODM
Now for mount:
# loopmount -i /iso/dvd.iso -l loop0 -o "-V cdrfs -o ro" -m /mnt/dvd
And umount:
# loopumount -l loop0 -m /mnt/dvd
Attention: an image file can be associated with only one loopback device.
Example of PowerVM virtual dvd setup:
login: padmin
padmin's Password:
1 unsuccessful login attempt since last login.
Last unsuccessful login: Mon Jan 31 18:51:28 CST 2011 on /dev/vty0
Last login: Mon Jan 31 18:28:29 CST 2011 on /dev/vty0
$
$ mkrep -sp rootvg -size 10G
Virtual Media Repository Created
Repository created within "VMLibrary" logical volume
$ mkvopt -name 6_1_6osp.iso -dev cd0 -ro
$
$ mkvdev -vadapter vhost1 -fbo -dev vcd1
vcd0 Available
$ loadopt -vtd vcd0 -disk 6_1_6osp.iso
$ unloadopt -vtd vcd0
# lppchk –v
lppchk: The following filesets need to be installed or corrected to bring the system to a consistent state:
9a33182fe26f1beae04e59e5cb6d3cdb 0.0.0.0 (COMMITTED)
# lslpp -L
Backup the ODM using the following command:
# tar -cvf /tmp/odm.tar ./etc/objrepos ./usr/lib/objrepos
# export ODMDIR=/usr/lib/objrepos
# odmget -q name= lpp
# odmdelete -q name= -o lpp
# odmdelete -q lpp_name= -o product
# odmdelete -q lpp_id= -o history
# odmdelete -q lpp_id= -o inventory
# export ODMDIR=/etc/objrepos
# odmdelete -q name= -o lpp
# odmdelete -q lpp_name= -o product
# odmdelete -q lpp_id= -o history
# odmdelete -q lpp_id= -o inventory
# export ODMDIR=/etc/objrepos
Check lppchk -v again to see if those entries are gone from ODM
0516-1734 extendlv: Warning, savebase failed. Please manually run ‘savebase’ before rebooting.
If you run savebase -v and you get “non-bootable LV name given” try reconstucting your /dev/ipldevice file.
Run savebase -v again and if you get the same error, try follow procedure:
# bosboot -ad /dev/hdiskX (a disk that has hd5 on it)
# bosboot -ad /dev/hdiskY (a disk that has hd5 on it)
# ipl_varyon -i
[You'll get a return on every physical disk on the system]
You will then get a return similar to this:
# savebase -v
saving to ‘/dev/hd5′
99 CuDv objects to be saved
240 CuAt objects to be saved
44 CuDep objects to be saved
51 CuVPD objects to be saved
407 CuDvDr objects to be saved
5 CuPath objects to be saved
0 CuPathAt objects to be saved
0 CuData objects to be saved
0 CuAtDef objects to be saved
Number of bytes of data to save = 49587
Compressing data
Compressed data size is = 12069
bi_start = 0×3600
bi_size = 0×1820000
bd_size = 0×1800000
ram FS start = 0x8d6ca0
ram FS size = 0xea34cf
sba_start = 0×1803600
sba_size = 0×20000
sbd_size = 0x2f29
Checking boot image size:
new save base byte cnt = 0x2f29
Wrote 12073 bytes
Successful completion
Memo: lslpp
List the package that owns a file
# lslpp -w
List the files in a package
# lslpp -f
List all packages installed
# lslpp -L
Sometime during AIX migration/alt_clone or HMC upgrade, it can happen that RMC ID get lost or duplicated, the the rsct process is unable to re stabilize the connection.
You can reset the key and restart that service as follows:
Reset RMC unique ID:
# /usr/sbin/rsct/install/bin/recfgct
# /usr/sbin/rsct/bin/rmcctrl -z
# /usr/sbin/rsct/bin/rmcctrl -A
Then you can check the rmc status:
# /usr/sbin/rsct/bin/rmcdomainstatus -s ctrmc
AIX – ODM Device Configuration Object Classes
A list of the ODM Device Configuration Object Classes follows:
PdDv
Predefined Devices
PdCn
Predefined Connection
PdAt
Predefined Attribute
Config_Rules
Configuration Rules
CuDv
Customized Devices
CuDep
Customized Dependency
CuAt
Customized Attribute
CuDvDr
Customized Device Driver
CuVPD
Customized Vital Product Data
There is a known problem with mounting ISO images on the AIX platform. To workaround the problem, complete the following instructions:
Obtain the size of the image, then identify the nearest multiple of 128 MB that will provide enough space for the image. For example, the image of CD-ROM is approximately 650/700 MB, so use 768 MB as an image size.
Make a logical volume of this size. Ensure that there is enough space on the physical volume. For example, hdisk0.
# mklv -y cdlv -s n -L /dev/cdlv rootvg 768M hdisk0
If the command fails, increase the volume size by a multiple of 128.
Use the dd command to create a pseudo-device. Ensure that the partition has enough space for the pseudo-device. In the following example command, the pseudo-device is /dev/cdlv.
# dd if=/opt/iso/cd.iso of=/dev/cdlv
Note that this command may take a long time and will create two dd processes.
Mount the device like a CD-ROM in AIX. Ensure that the mount point exists.
# mount -v cdrfs -o ro /dev/cdlv /mnt/iso
When AIX will not release /dev/cd0 device (after umount any associted filesystems), and you get busy device error on dlpar operations, use this command to kill all processes that take busy resource:
# fuser -k -x -u -c /dev/cd0
Usually in pSeries hardware configuration is connected to a scsi controller by scsi-to-ide/sas/sata or other terrible solution bridge.
To made all this operation faster you can identify pci parent adapter and remove recursively all device.
Identify:
# lsdev -l cd0 -F parent
scsi0
# lsdev -l scsi0 -F parent
sisscsia0
# lsdev -l sisscsia0 -F parent
pci10
Remove:
# rmdev -Rdl pci10
cd0 deleted
ses0 deleted
scsi0 deleted
sisscsia0 deleted
pci10 deleted
Then you can move the controller from HMC to another LPAR
