A fix is available
APAR status
Closed as program error.
Error description
machine crashed due to autofs daemon unmounting an autofs mount. the stack trace looks like (6)> f pvthread+074500 STACK: ■005D9F08vnop_hold+000028 (7777777777777777 ■??) ■080B18E8auto_new_mount_thread+000288 (??, ??, ??) ■080BDC68auto_trigger_mount+0001A8 (??, ??, ??) ■080C261Cauto_access+00023C (??, ??, ??, ??) ■080ABCA4aix2onc_access+0001C4 (??, ??, ??, ??) ■005DB9ACvnop_access+0001EC (??, ??, ??, ??) ■080C22C0auto_lookup+000BC0 (??, ??, ??, ??, ??, ??, ??) ■080AAC94aix2onc_lookup+000094 (??, ??, ??, ??, ??, ??) ■005D9514vnop_lookup+0001D4 (??, ??, ??, ??, ??, ??) ■0059A7D8lookuppn+000918 (??, ??, ??, ??, ??, ??, ??, ??) ■0059B118lookupname_internal+0001F8 (??, ??, ??, ??, ??, ??, ??, ??) ■006E6DFCchdirec+00005C (??, ??, ??, ??) ■006E6B20chdir+0000A0 (??) ■0000386Covlya_addr_sc_flih_main+00014C () Looks like the mount got unmounted when there is a process doing a lookup within the root directory of that autofs file system.
Local fix
Problem summary
machine crashed due to autofs daemon unmounting an autofs mount. the stack trace looks like (6)> f pvthread+074500 STACK: 005D9F08 vnop_hold+000028 (7777777777777777 ?? ) 080B18E8 auto_new_mount_thread+000288 (??, ??, ??) 080BDC68 auto_trigger_mount+0001A8 (??, ??, ??) 080C261C auto_access+00023C (??, ??, ??, ??) 080ABCA4 aix2onc_access+0001C4 (??, ??, ??, ??) 005DB9AC vnop_access+0001EC (??, ??, ??, ??) 080C22C0 auto_lookup+000BC0 (??, ??, ??, ??, ??, ??, ??) 080AAC94 aix2onc_lookup+000094 (??, ??, ??, ??, ??, ??) 005D9514 vnop_lookup+0001D4 (??, ??, ??, ??, ??, ??) 0059A7D8 lookuppn+000918 (??, ??, ??, ??, ??, ??, ??, ??) 0059B118 lookupname_internal+0001F8 (??, ??, ??, ??, ??, ??, ??, ??) 006E6DFC chdirec+00005C (??, ??, ??, ??) 006E6B20 chdir+0000A0 (??) 0000386C ovlya_addr_sc_flih_main+00014C () Looks like the mount got unmounted when there is a process doing a lookup within the root directory of that autofs file system.
Problem conclusion
before we unmount the trigger mount, don't decrease the hold count on the vnode
Temporary fix
Comments
5300-10 - use AIX APAR IZ90949 5300-11 - use AIX APAR IZ85455 5300-12 - use AIX APAR IZ91220 6100-04 - use AIX APAR IZ83991 6100-05 - use AIX APAR IZ83956 6100-06 - use AIX APAR IZ83388 7100-00 - use AIX APAR IZ84546
APAR Information
APAR number
IZ83388
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2010-08-22
Closed date
2010-08-22
Last modified date
2013-03-27
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 U835918
UP11/05/10 I 1000
PTF to Fileset Mapping
U835918 bos.net.nfs.client 6.1.6.15
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Document Information
Modified date:
27 March 2013