In the example below, the error 0516-070 : LVM system call found an unaccountable internal error. was due to full / (slash) filesystem.
Since it was the first time I have seen this error, I do not know if it could be associated with other problems but for sure you can find yours by looking into errpt.
aix / # lsvg rootvg 0516-070 : LVM system call found an unaccountable internal error.
aix / # errpt ksh: No space left on device IDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTION F7FA22C9 0125144614 I O SYSJ2 UNABLE TO ALLOCATE SPACE IN FILE SYSTEM aix / # errpt -aj F7FA22C9 ksh: No space left on device --------------------------------------------------------------------------- LABEL: J2_FS_FULL IDENTIFIER: F7FA22C9 Date/Time: Sat Jan 25 14:46:14 2014 Sequence Number: 15 Machine Id: 00A64B804A00 Node Id: aix Class: O Type: INFO WPAR: Global Resource Name: SYSJ2 Description UNABLE TO ALLOCATE SPACE IN FILE SYSTEM Probable Causes FILE SYSTEM FULL Recommended Actions INCREASE THE SIZE OF THE ASSOCIATED FILE SYSTEM REMOVE UNNECESSARY DATA FROM FILE SYSTEM USE FUSER UTILITY TO LOCATE UNLINKED FILES STILL REFERENCED Detail Data JFS2 MAJOR/MINOR DEVICE NUMBER 000A 0004 FILE SYSTEM DEVICE AND MOUNT POINT /dev/hd4, /
Remember, you will not be able to increase / if it's full because you will get the same error. You will have to do just a bit cleaning first in order to have a successful increasing command:
aix # chfs -a size=+128M / Filesystem size changed to 786432
Now a successful "lsvg rootvg" command:
aix # lsvg rootvg VOLUME GROUP: rootvg VG IDENTIFIER: 00c64e8000004c0000000143c6345968 VG STATE: active PP SIZE: 128 megabyte(s) VG PERMISSION: read/write TOTAL PPs: 1536 (196608 megabytes) MAX LVs: 256 FREE PPs: 1426 (182528 megabytes) LVs: 12 USED PPs: 110 (14080 megabytes) OPEN LVs: 11 QUORUM: 3 (Enabled) TOTAL PVs: 4 VG DESCRIPTORS: 4 STALE PVs: 0 STALE PPs: 0 ACTIVE PVs: 4 AUTO ON: yes MAX PPs per VG: 32512 MAX PPs per PV: 1016 MAX PVs: 32 LTG size (Dynamic): 512 kilobyte(s) AUTO SYNC: no HOT SPARE: no BB POLICY: relocatable PV RESTRICTION: none INFINITE RETRY: no