Unmounting a VxFS filesystem hangs on RHEL 6
Issue
-
VxFS hangs in the kernel function fsnotify_unmount_inodes during umount.
The system logs showNov 12 15:00:50 hostname02 kernel: INFO: task umount.vxfs:28673 blocked for more than 120 seconds. Nov 12 15:00:50 hostname02 kernel: Tainted: P --------------- 2.6.32-504.el6.x86_64 #1 Nov 12 15:00:50 hostname02 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Nov 12 15:00:50 hostname02 kernel: umount.vxfs D 0000000000000005 0 28673 28672 0x00000080 Nov 12 15:00:50 hostname02 kernel: ffff88bea1e13d18 0000000000000082 ffff88bea1e13ce0 ffff88bea1e13cdc Nov 12 15:00:50 hostname02 kernel: ffff88bea1e13d68 ffff88c07fe71300 0000003eccbc8002 ffff88035df568c0 Nov 12 15:00:50 hostname02 kernel: 0000000000000820 00000000ffff8004 ffff88bea1ce5af8 ffff88bea1e13fd8 Nov 12 15:00:50 hostname02 kernel: Call Trace: Nov 12 15:00:50 hostname02 kernel: [<ffffffff811d2855>] fsnotify_unmount_inodes+0x165/0x1d0 Nov 12 15:00:50 hostname02 kernel: [<ffffffff811ba449>] ? sync_inodes_sb+0x149/0x190 Nov 12 15:00:50 hostname02 kernel: [<ffffffff8109eb00>] ? autoremove_wake_function+0x0/0x40 Nov 12 15:00:50 hostname02 kernel: [<ffffffff811abe3b>] invalidate_inodes+0x5b/0x190 Nov 12 15:00:50 hostname02 kernel: [<ffffffff811cb644>] ? __sync_blockdev+0x24/0x50 Nov 12 15:00:50 hostname02 kernel: [<ffffffff811903ec>] generic_shutdown_super+0x4c/0xe0 Nov 12 15:00:50 hostname02 kernel: [<ffffffff811904b1>] kill_block_super+0x31/0x50 Nov 12 15:00:50 hostname02 kernel: [<ffffffffa086ecb9>] vx_kill_sb+0x49/0x170 [vxfs] Nov 12 15:00:50 hostname02 kernel: [<ffffffffa046a10a>] amf_kill_sb+0xaa/0x150 [amf] Nov 12 15:00:50 hostname02 kernel: [<ffffffff81190c87>] deactivate_super+0x57/0x80 Nov 12 15:00:50 hostname02 kernel: [<ffffffff811b083f>] mntput_no_expire+0xbf/0x110 Nov 12 15:00:50 hostname02 kernel: [<ffffffff811b138b>] sys_umount+0x7b/0x3a0 - Why does the
s_fsnotify_marks.counter = -1in the kernelsuper_blockstructure during a VxFS umount?
Environment
- Red Hat Enterprise Linux 6.6
- Kernel 2.6.32-504.el6
Symantec VxFS filesystem packages
- VRTSvxfs-6.2.1.100-RHEL6.x86_64 (earlier packages are also effected)
- VRTSvxfs-6.2.1.102-RHEL6.x86_64
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