A fix is available
APAR status
Closed as program error.
Error description
I/O hangs in the following stack. [04607318]scsidisk_sleep+000078 (??, ??, ??) [045E0210]scsidisk_ioctl+0005F0 (??, ??, ??, ??, ??, ??) [004AE4E0]rdevioctl+0000C0 (??, ??, ??, ??, ??, ??) [00648428]gno_ioctl@AF18_4+000048 (??, ??, ??, ??) [005A018C]fp_ioctl+00006C (??, ??, ??, ??) When the reset sequence is running on the last active path of a disk and if it receives serial number different from what it had known before, it fails all the command except the ioctl commands. It also marks the disk state as reset failed. This leads to reset sequence being tried indefinitely.
Local fix
Problem summary
Possible IO hang with folllowing stack scsidisk_sleep+000078 () scsidisk_ioctl+0005F0 () rdevioctl+0000C0 () gno_ioctl@AF18_4+000048 () fp_ioctl+00006C ()
Problem conclusion
Added code to mark the reset, reassign and writev commands are ready when the command queued. This will fail the command when error occurred.
Temporary fix
Comments
APAR Information
APAR number
IZ78775
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2010-07-02
Closed date
2010-07-02
Last modified date
2013-03-29
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 U834709
UP10/08/20 I 1000
PTF to Fileset Mapping
U834709 devices.fcp.disk.rte 6.1.5.2
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Document Information
Modified date:
29 March 2013