A fix is available
APAR status
Closed as program error.
Error description
machine may either crash or produce invalid snapshot if it crashes, the stack trace may look like (0)> f pvthread+003400 STACK: ￭00064864.panic_trap+000000 () ￭002AB9D4errMETADATA_CORRUPT@AF50_26+000054 (??, ??, ??, ??) ￭002AB9D4errMETADATA_CORRUPT@AF50_26+000054 (??, ??, ??, ??) ￭002A0D60bmValidate+000140 (??, ??) ￭002A7654bmRead+000494 (??, ??, ??, ??, ??, ??) ￭003019A4seReadBMap+0003E4 (??, ??, ??, ??, ??) ￭00300AE8seReadSMap+000228 (??, ??, ??, ??) ￭00301EA8seLookupSMap+000088 (??, ??, ??, ??, ??, ??, ??) ￭00304C3CseCOW+0002DC (??, ??) ￭002A1CF4bmStartIO+0002F4 (??) ￭002A4D98bmLogSync+000578 (??, ??) ￭002B5930lmLogSync@AF71_45+000030 (??, ??, ??) ￭002B4B08lmLogSync+000028 (??, ??) ￭002B5BB0lmLogSyncWithLock@AF72_2+000030 (??) ￭002B1014lmLogSyncWithLock+000014 (??) ￭002B4AA4lmLogSyncAll+0000A4 () ￭0028D998iSyncdAll+0000B8 () ￭002B0F74j2_syncvfs@AF50_13+0001B4 (??, ??, ??, ??, ??) ￭005CE264vfs_syncvfs+000044 (??, ??, ??, ??) ￭0069D7A4syncvfs+000244 (??, ??) ￭00003888mfspurr_sc_flih01+0000E4 () where it failed the ras check of dmap page.
Local fix
Problem summary
machine may either crash or produce invalid snapshot if it crashes, the stack trace may look like (0)> f pvthread+003400 STACK: 00064864 .panic_trap+000000 () 002AB9D4 errMETADATA_CORRUPT@AF50_26+000054 (??, ??, ??, ??) 002AB9D4 errMETADATA_CORRUPT@AF50_26+000054 (??, ??, ??, ??) 002A0D60 bmValidate+000140 (??, ??) 002A7654 bmRead+000494 (??, ??, ??, ??, ??, ??) 003019A4 seReadBMap+0003E4 (??, ??, ??, ??, ??) 00300AE8 seReadSMap+000228 (??, ??, ??, ??) 00301EA8 seLookupSMap+000088 (??, ??, ??, ??, ??, ??, ??) 00304C3C seCOW+0002DC (??, ??) 002A1CF4 bmStartIO+0002F4 (??) 002A4D98 bmLogSync+000578 (??, ??) 002B5930 lmLogSync@AF71_45+000030 (??, ??, ??) 002B4B08 lmLogSync+000028 (??, ??) 002B5BB0 lmLogSyncWithLock@AF72_2+000030 (??) 002B1014 lmLogSyncWithLock+000014 (??) 002B4AA4 lmLogSyncAll+0000A4 () 0028D998 iSyncdAll+0000B8 () 002B0F74 j2_syncvfs@AF50_13+0001B4 (??, ??, ??, ??, ??) 005CE264 vfs_syncvfs+000044 (??, ??, ??, ??) 0069D7A4 syncvfs+000244 (??, ??) 00003888 mfspurr_sc_flih01+0000E4 () where it failed the ras check of dmap page.
Problem conclusion
when reading in the dmap page, make sure to read the block according to the sxd, not assume all sxd are consecutive.
Temporary fix
Comments
APAR Information
APAR number
IV31528
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2012-11-06
Closed date
2012-11-06
Last modified date
2013-11-25
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 V7.1
Fixed component ID
5765H4000
Applicable component levels
R710 PSY U854697
UP13/11/25 I 1000
PTF to Fileset Mapping
U854697 bos.mp64 7.1.3.0
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Document Information
Modified date:
25 November 2013