[Ocfs2-users] umount hang + high CPU

sylarrrrrrr at aim.com sylarrrrrrr at aim.com
Mon Jul 6 13:00:04 PDT 2009 












 Hi,





?On kernel 2.6.30 (and I have upgraded drbd there too to 8.3.2) I have nothing in the logs, and the umount hangs, and after a few minutes the whole computer hangs, and I have to hard reset it. On kernel 2.6.26 it also hanged but the computer didn't hang, but it refused to reboot, or poweroff, so I also had to hard reset it. In 2.6.26 I had this in syslog :








 

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] (7254,1):dlm_empty_lockres:2709 ERROR: lockres O0000000000000003cb1e3000000000 still has local locks!

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] ------------[ cut here ]------------

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] kernel BUG at fs/ocfs2/dlm/dlmmaster.c:2710!

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] invalid opcode: 0000 [1] SMP 

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] CPU 1 

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] Modules linked in: ocfs2 ppdev lp parport drbd cn rfcomm l2cap bluetooth xt_tcpudp iptable_filter battery ip_t

ables x_tables ipv6 ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager ocfs2_stackglue configfs linear coretemp loop snd_hda_intel snd_pcsp snd_pcm snd_timer sn

d soundcore nvidiafb i2c_i801 psmouse snd_page_alloc i2c_core button vgastate serio_raw intel_agp evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod raid456 a

sync_xor async_memcpy async_tx xor raid1 md_mod sg sr_mod cdrom sd_mod ide_pci_generic ide_core ata_generic usbhid hid ff_memless usb_storage floppy ahci ohci1394 pat

a_marvell atl1e ieee1394 libata tulip scsi_mod dock ehci_hcd uhci_hcd thermal processor fan thermal_sys

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] Pid: 7254, comm: umount Not tainted 2.6.26-2-amd64 #1

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] RIP: 0010:[<ffffffffa035981f>]? [<ffffffffa035981f>] :ocfs2_dlm:dlm_empty_lockres+0x13fb/0x14a0

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] RSP: 0018:ffff81023c971c18? EFLAGS: 00010292

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] RAX: 0000000000000079 RBX: ffff8101db4dae40 RCX: ffffffff804fe108

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] RDX: 0000000100000000 RSI: 0000000000000096 RDI: 0000000000000286

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] RBP: ffff8101db4dae40 R08: ffffffff804fe0f0 R09: ffff81000103b918

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] R10: ffff81000103b880 R11: 0000000000000046 R12: ffff8101cae4e800

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] R13: 000000000000001f R14: 00000000ffffffd9 R15: 00000000000000c5

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] FS:? 0000000000000000(0000) GS:ffff81023f08e8c0(0063) knlGS:00000000f7deb6f0

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] CS:? 0010 DS: 002b ES: 002b CR0: 000000008005003b

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] CR2: 00000000f7e2e2a0 CR3: 00000001dc9ef000 CR4: 00000000000006e0

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] Process umount (pid: 7254, threadinfo ffff81023c970000, task ffff81019e998040)

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] Stack:? ffff81020c580800 ffff810100000001 0000000000000001 0000000000000000

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? ffff8101cae4ea48 0000000000000000 ffff81020c580800 0000000000000000

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? 00008101cae4ea38 0000000000000003 0000000000000000 ffff81019e998040

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327] Call Trace:

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffff802461b1>] ? autoremove_wake_function+0x0/0x2e

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffffa034d1af>] ? :ocfs2_dlm:__dlm_lockres_unused+0x33/0x50

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffffa0349819>] ? :ocfs2_dlm:dlm_unregister_domain+0x1c8/0x756

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffff8022898e>] ? enqueue_task+0x56/0x61

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffffa037819d>] ? :ocfs2_stack_o2cb:o2cb_cluster_disconnect+0x30/0x40

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffffa030f252>] ? :ocfs2_stackglue:ocfs2_cluster_disconnect+0x21/0x40

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffffa04760c3>] ? :ocfs2:ocfs2_dlm_shutdown+0xbd/0x12e

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffffa0499496>] ? :ocfs2:ocfs2_dismount_volume+0x1a1/0x34e

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffff80271aa6>] ? filemap_write_and_wait+0x26/0x31

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffffa0499995>] ? :ocfs2:ocfs2_put_super+0x67/0xb8

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffff8029c9a1>] ? generic_shutdown_super+0x60/0xee

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffff8029ca3c>] ? kill_block_super+0xd/0x1e

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffff8029caf8>] ? deactivate_super+0x5f/0x78

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffff802afdf2>] ? sys_umount+0x2f9/0x353

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffff80221fac>] ? do_page_fault+0x5d8/0x9c8

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320327]? [<ffffffff8022562c>] ? sys32_stat64+0x11/0x29

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320337]? [<ffffffff8031db03>] ? __up_write+0x21/0x10e

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320337]? [<ffffffff80224c52>] ? sysenter_do_call+0x1b/0x66

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320337] 

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320337] 

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320337] Code: 00 00 8b b0 98 01 00 00 48 c7 c7 2f a9 36 a0 31 c0 65 8b 14 25 24 00 00 00 48 89 0c 24 89 d2 48 c7 c1 00 48 36 a0 e8 e8 bb ed df <0f> 0b eb fe 48 f7 05 32 dc fc ff 00 09 00 00 74 4d 48 f7 05 2d 

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320337] RIP? [<ffffffffa035981f>] :ocfs2_dlm:dlm_empty_lockres+0x13fb/0x14a0

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320337]? RSP <ffff81023c971c18>

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320337] ---[ end trace 10e3d919ff4fa443 ]---

Jul? 5 21:10:34 ocfs2Server kernel: [249187.320337] ------------[ cut here ]------------








 

PS. I see that both kernels have the same 1.5.0 version, so upgrading was pointless in this regard.









-----Original Message-----


From: Tao Ma <tao.ma at oracle.com>


To: sylarrrrrrr at aim.com


Cc: ocfs2-users at oss.oracle.com


Sent: Sun, Jul 5, 2009 9:22 pm


Subject: Re: [Ocfs2-users] umount hang + high CPU















Hi,?



?  Is there something in your system log??



?  I would guess there should be some info there.?


?



Regards,?



Tao?


?



sylarrrrrrr at aim.com wrote:?



>   Hi,?



> 
>  I had a problem where I got a "kernel bug" in the logs in ocfs2. That 
> happened when I unmounted the volume after a day or two that it was 
> mounted, so I thought I needed to upgrade the kernel (maybe the next 
> version will be bug free), so I did to 2.6.30, and now I tried mounting 
> and unmounting the volume right away... and it hanged, and the CPU got 
> high with that umount process.?



> 
> Please advice?



> 
> PS. tools and console packages are version 1.4.2.?



> 
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