A fix is available
APAR status
Closed as program error.
Error description
machine hang while trying to unmount a degraded file system. the unmount thread's stack trace looks like (0)> f 820 pvthread+033400 STACK: ￭00088A44e_block_thread+0002E4 () ￭000894E4e_sleep_thread+000064 (??, ??, ??) ￭002B40D4iUnmount+000254 (??, ??, ??) ￭00340A88umount_fs_degraded+000268 (??, ??) ￭00342144j2_umount+000164 (??, ??, ??) ￭00606F18vfs_unmount+000098 (??, ??, ??) ￭006D703Ckunmount+0000DC (??, ??, ??) ￭006D7888uvmount+000208 (??, ??) ￭00003888mfspurr_sc_flih01+0000E4 () ￭10005BA8helper_UMfunc+000028 (??, ??) ￭10003548dounmount+0000E8 (??, ??, ??, ??) ￭10003E68umountmain+000188 (??, ??) ￭1000062Cmain+0000CC (??, ??) ￭10000168__start+000068 () with IXLOCK set on the inode
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * Systems running the 6100-07 Technology Levels with the * bos.mp64 fileset between and including the levels of 6.1.7.15 * and 6.1.7.17. **************************************************************** * PROBLEM DESCRIPTION: * System hang while trying to unmount a degraded file system. * The unmount thread's stack trace looks like * (0)> f 820 * pvthread+033400 STACK: * 00088A44 e_block_thread+0002E4 () * 000894E4 e_sleep_thread+000064 (??, ??, ??) * 002B40D4 iUnmount+000254 (??, ??, ??) * 00340A88 umount_fs_degraded+000268 (??, ??) * 00342144 j2_umount+000164 (??, ??, ??) * 00606F18 vfs_unmount+000098 (??, ??, ??) * 006D703C kunmount+0000DC (??, ??, ??) * 006D7888 uvmount+000208 (??, ??) * 00003888 mfspurr_sc_flih01+0000E4 () * 10005BA8 helper_UMfunc+000028 (??, ??) * 10003548 dounmount+0000E8 (??, ??, ??, ??) * 10003E68 umountmain+000188 (??, ??) * 1000062C main+0000CC (??, ??) * 10000168 __start+000068 () * * with IXLOCK set on the inode. **************************************************************** * RECOMMENDATION: * Install APAR IV30896. ****************************************************************
Problem conclusion
in iRecycle(), if we are going to return EBUSY, wake up waiter if there is any.
Temporary fix
Comments
6100-07 - use AIX APAR IV30896 6100-08 - use AIX APAR IV24505 6100-08 - use AIX APAR IV24505 7100-02 - use AIX APAR IV24632
APAR Information
APAR number
IV30896
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
YesPE
HIPER
NoHIPER
Submitted date
2012-10-26
Closed date
2012-10-26
Last modified date
2013-04-09
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 U854618
UP13/03/22 I 1000
PTF to Fileset Mapping
U854618 bos.mp64 6.1.7.18
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Document Information
Modified date:
09 April 2013