Memo About Some Very Interesting CLI Tools

8231 crw——- 2 root system 17, 0 Apr 21 14:37 /dev/ipldevice 8231 crw——- 2 root system 17, 0 Apr 21 14:37 /dev/rhdisk0

[…] /dev/fslv07 /files/tmpcdinst jfs2 Jun 27 10:14 rw,log=/dev/loglv01

Here are the corresponding information found in the ODM:

# odmget -q "name=fslv07 and attribute=type" CuAt 
CuAt:
name = "fslv07"
attribute = "type"
value = "jfs2"
type = "R"
generic = "DU"
rep = "s"
nls_index = 639

This can be compared with the status returned by the lsvg command:

# lsvg -l colombvg
colombvg:
LV NAME             TYPE       LPs   PPs   PVs  LV STATE      MOUNT POINT
[...]
fslv07              jf2        280   280   2    open/syncd    /files/tmpcdinst

More on this particular subject in the story Export and Import a Volume Group... When Things Goes the Wrong Way.

Get the ODM volume group information for a given disk:

# lqueryvg -p hdisk0 -Avt
Max LVs:        256
PP Size:        27
Free PPs:       0
LV count:       12
PV count:       2
Total VGDAs:    3
Conc Allowed:   0
MAX PPs per PV  1016
MAX PVs:        32
Conc Autovaryo  0
Varied on Conc  0
Logical:        00ce3a0c00004c000000010364ba67bc.1   hd5 1  
                00ce3a0c00004c000000010364ba67bc.2   hd6 1  
                00ce3a0c00004c000000010364ba67bc.3   hd8 1  
                00ce3a0c00004c000000010364ba67bc.4   hd4 1  
                00ce3a0c00004c000000010364ba67bc.5   hd2 1  
                00ce3a0c00004c000000010364ba67bc.6   hd9var 1  
                00ce3a0c00004c000000010364ba67bc.7   hd3 1  
                00ce3a0c00004c000000010364ba67bc.8   hd1 1  
                00ce3a0c00004c000000010364ba67bc.9   hd10opt 1  
                00ce3a0c00004c000000010364ba67bc.10  loglv00 1  
                00ce3a0c00004c000000010364ba67bc.11  fslv00 1  
                00ce3a0c00004c000000010364ba67bc.12  fslv04 1  
Physical:       00ce3a0c64ba5da3                2   0  
                00ce3a0c8df2265d                1   0  
VGid:           00ce3a0c00004c000000010364ba67bc
Total PPs:      158
LTG size:       128
HOT SPARE:      0
AUTO SYNC:      0
VG PERMISSION:  0
SNAPSHOT VG:    0
IS_PRIMARY VG:  0
PSNFSTPP:       4352
VARYON MODE:    0
VG Type:        0
Max PPs:        32512

Operating system general status and information

Gather system configuration information:

# snap -r    /* Remove snap command output from the /tmp/ibmsupt directory. */
# snap -ac   /* Creates a compressed pax image (snap.pax.Z file) of all files
                in the /tmp/ibmsupt. */

This tool can be compared to the explorer (known as the SUNWexplo package) on Sun Solaris OE.

About starting services at boot time

List the content of the inittab file:

# lsitab -a   /* Use this command instead of `cat /etc/inittab`. */

Create a new file system

Create a new Enhanced Journaled File System in the the colombvg volume group with a size of 5 gigabytes in read-write mode, using the mount point /files/ddaeurd1/DATA and being automatically mounted at boot time:

# crfs -v jfs2 -g colombvg -a size=5G -m /files/ddaeurd1/DATA -p rw -A yes

Boot disk configuration

#

After verifying there are two disks in the boot list...

# bootlist -m normal -o
hdisk0
hdisk1

... verify and create a boot image on the second mirrored boot disk:

# bosboot -vd hdisk1 && bosboot -ad hdisk1

How to know on which disk the OS has booted (bootblock used and kernel loaded):

# bootinfo -b
hdisk0

How to know on which mode the OS has booted (kernel in 32-bit or 64-bit):

# bootinfo -K
64

If there is some problem booting on one disk, be sure that the corresponding raw device are the same device as ipldevice:

# bootinfo -b
hdisk0
#
# ls -ilF /dev/ipldevice /dev/rhdisk0

VM information vs. ODM information

#

Assuming the following mounted file system:

# mount
  node       mounted        mounted over    vfs       date        options