Command to perform immediate ufsdump

E.g.:
ufsdump 0f - / | gzip -f -1 - > root.dump.gz

synclvodm - synchronising your logical volume manager in IBM AIX

Description If you have problems with LVM because it is out of sync with the ODM in IBM AIX, you may see the following errors: 0516-306 getlvodm: Unable to find hd7copie in the Device Configuration Database. 0516-912 rmlv: Unable to remove logical volume hd7copie. To correct this, you must sync the ODM: Before correction: # lsvg -l rootvg rootvg: LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT ... hd7copie ??? 8 8 1 closed/syncd N/A Run the sync command: # synclvodm -v rootvg synclvodm: Physical volume data updated. synclvodm: Logical volume hd5 updated. synclvodm: Logical volume hd6 updated. synclvodm: Logical volume hd8 updated. synclvodm: Logical volume hd4 updated. synclvodm: Logical volume hd2 updated. synclvodm: Logical volume hd9var updated. synclvodm: Logical volume hd3 updated. synclvodm: Logical volume hd1 updated. synclvodm: Logical volume hd7 updated. synclvodm: Logical volume hd7copie updated. synclvodm: Logical volume rootvglv01 updated. After the sync command completes: # lsvg -l rootvg rootvg: LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT ... hd7copie dump 8 8 1 open/syncd N/A

Example synclvodm -v vg_name

Accurate way to check disk size in AIX/HPUX

# getconf DISK_SIZE /dev/hdisk10

Howto switch on/off SMT features in LPAR

# smtctl -m 'on'

# smtctl -m 'off'

or via smitty -> under performance --> SMT

Alternative command for TOP in Solaris

There are fews command that to monitor overall performance.

1) sar 2 10
2) prstat

How to read vgda on the specific disk

# lqueryvg -Atp hdisk1

How to "config manager" in Sun

# cfgadm -c

# devfsadm

# devfsadm -c disk