A fix is available
APAR status
Closed as program error.
Error description
On AIX 6.1 TL5 and later TLs a JFS2 filesystem may hang, causing all commands accessing that filesystem to hang and to be unkillable. The only way to recover is to reboot the system. The dump will show a thread waiting in bmAssign: [000D50D0]e_block_thread+000290 () [000D5D28]e_sleep_thread+0000E8 (??, ??, ??) [00260B38]bmAssign+000778 (??, ??, ??, ??, ??, ??) [0025FDFC]bmRead+00009C (??, ??, ??, ??, ??, ??) [002B363C]xtTruncate+0009DC (??, ??, ??, ??, ??) [00299FDC]txLog+00029C (??, ??, ??) [0029C3D4]txCommit+000654 (??, ??, ??, ??) [002D3C58]j2_remove+000438 (??, ??, ??, ??) [005838A4]vnop_remove+0003E4 (??, ??, ??, ??) [0067B9C0]kunlink+000300 (??, ??) and other threads waiting for locks held by that thread or waiting in bmFlushRead for the same pager buffer.
Local fix
Reboot the system.
Problem summary
hand on bmAssign with following stack: pvthread+0B6E00 STACK: 000D3870 e_block_thread+000290 () 000D44C8 e_sleep_thread+0000E8 (??, ??, ??) 0023D258 bmAssign+000778 (??, ??, ??, ??, ??, ??) 0023C51C bmRead+00009C (??, ??, ??, ??, ??, ??) 00289F8C xtFreeMap+00018C (??, ??, ??) 00275094 txUpdateMap+000254 (??, ??) 00278258 txCommit+0006D8 (??, ??, ??, ??) 002AF178 j2_remove+000438 (??, ??, ??, ??) 0057C0A4 vnop_remove+0003E4 (??, ??, ??, ??) 00672580 kunlink+000300 (??, ??) 00003850 ovlya_addr_sc_flih_main+000130 () kdb_get_virtual_memory no real storage @ 700000000596440 1000624B4 00000001000624B4 ()
Problem conclusion
Track buffer RDONLY users via separate data field and manage accordingly
Temporary fix
Comments
APAR Information
APAR number
IV19995
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2012-04-23
Closed date
2012-04-23
Last modified date
2013-02-23
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
AIX 610 STD EDI
Fixed component ID
5765G6200
Applicable component levels
R610 PSY U845040
UP12/10/23 I 1000
PTF to Fileset Mapping
U845040 bos.mp64 6.1.8.0
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Document Information
Modified date:
23 February 2013