A fix is available
APAR status
Closed as program error.
Error description
Under heavy NPIV IO load, the VIOC/ VIOS may hang. The stack trace of the thread that is looping will look similar to: (0)> f 80 pvthread+005000 STACK: Use current context [F00000002FF47600] of cpu 4 [045B43DC]efsc_npiv_start_pending_cmds+00071C [0459C180]efsc_start+000CC0 (??, ??) [0459F1F8]efsc_strategy+000D98 (??) [0011F6A4]std_devstrat+000364 (??) [0011FCD0]devstrat+000050 (??) [00014F50].kernel_add_gate_cstack+000030 () [0461FDC0]scsidisk_start_ioctl+000B40 (??) [046242E8]scsidisk_start+000668 (??) [046250F0]scsidisk_start_disable+000030 (??) [045DC2A0]scsidisk_dk_passthru+001640 (??, ??, ??, ??) [045D04C0]scsidisk_dkpathpassthru+0000A0 (??, ??, ??) [045E006C]scsidisk_ioctl+00044C (??, ??, ??, ??, ??, ??) [004AE4E0]rdevioctl+0000C0 (??, ??, ??, ??, ??, ??) [00648428]gno_ioctl@AF18_4+000048 (??, ??, ??, ??) [005A018C]fp_ioctl+00006C (??, ??, ??, ??) [00014F50].kernel_add_gate_cstack+000030 () [F1000000A02BCD8C]hdasd_path_passthru+00014C (??, ??, ??) [F1000000A02BCAC8]hdasd_issue_path_passthru+0000A8 (??, ??) [F1000000A02BEF80]hdasd_issue_passthru+0003E0 (??) [F1000000A02CCE6C]target_kproc+00016C (??, ??, ??) [00014D70].hkey_legacy_gate+00004C () [001C60D0]procentry+000010 (??, ??, ??, ??)
Local fix
Problem summary
When there is heavy IO traffic in a VIOS providing NPIV service to Clients, it might hang.
Problem conclusion
VIOS NPIV related code changed to resolve the hang.
Temporary fix
Comments
5300-09 - use AIX APAR IZ82347 5300-10 - use AIX APAR IZ82654 5300-11 - use AIX APAR IZ82142 5300-12 - use AIX APAR IZ81696 6100-02 - use AIX APAR IZ79416 6100-03 - use AIX APAR IZ73401 6100-04 - use AIX APAR IZ78881 6100-05 - use AIX APAR IZ75499 6100-06 - use AIX APAR IZ77741 6100-06 - use AIX APAR IZ77464 6100-06 - use AIX APAR IZ77741 7100-00 - use AIX APAR IZ80374
APAR Information
APAR number
IZ75499
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2010-04-30
Closed date
2010-06-11
Last modified date
2013-03-28
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
U838382
Fix information
Fixed component name
AIX 610 STD EDI
Fixed component ID
5765G6200
Applicable component levels
R610 PSY U838382
UP10/08/20 I 1000
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Document Information
Modified date:
17 December 2021