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Bug 697029

Summary: NFSv4 client I/O locking issue during server recovery
Product: Red Hat Enterprise Linux 6 Reporter: Corey Marthaler <cmarthal>
Component: kernelAssignee: Jeff Layton <jlayton>
Status: CLOSED DUPLICATE QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: high Docs Contact:
Priority: high    
Version: 6.1CC: bfields, dhowells, jlayton, klaus.steinberger, liko, rwheeler, steved
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-04-28 16:24:23 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Corey Marthaler 2011-04-15 16:32:47 UTC 
Description of problem:
This is a new bug for the issue mentioned in comment #21 of bug 633540

[root@flea-10 ~]# uname -ar
Linux flea-10 2.6.32-71.el6.x86_64 #1 SMP Wed Sep 1 01:33:01 EDT 2010 x86_64
x86_64 x86_64 GNU/Linux

Slow work thread pool: Starting up
Slow work thread pool: Ready
FS-Cache: Loaded
FS-Cache: Netfs 'nfs' registered for caching


nfs4_reclaim_open_state: Lock reclaim failed!
nfs4_reclaim_open_state: Lock reclaim failed!
INFO: task xdoio:1734 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
xdoio         D 0000000000000002     0  1734   1723 0x00000080
 ffff88003c861a88 0000000000000086 ffff8800ffffffff 00000aa0fed4a3ce
 ffff88003c861a18 ffff88003c86cf30 0000000000029b78 000000010041a2be
 ffff88003cdbd0a8 ffff88003c861fd8 0000000000010518 ffff88003cdbd0a8
Call Trace:
 [<ffffffff8109b9a9>] ? ktime_get_ts+0xa9/0xe0
 [<ffffffff8110c060>] ? sync_page+0x0/0x50
 [<ffffffff814c8a23>] io_schedule+0x73/0xc0
 [<ffffffff8110c09d>] sync_page+0x3d/0x50
 [<ffffffff814c929f>] __wait_on_bit+0x5f/0x90
 [<ffffffff8110c253>] wait_on_page_bit+0x73/0x80
 [<ffffffff81091ce0>] ? wake_bit_function+0x0/0x50
 [<ffffffffa02c7e64>] nfs_wb_page+0xb4/0xd0 [nfs]
 [<ffffffffa02b68de>] nfs_launder_page+0x4e/0x80 [nfs]
 [<ffffffff811233c6>] invalidate_inode_pages2_range+0x2f6/0x380
 [<ffffffff81123467>] invalidate_inode_pages2+0x17/0x20
 [<ffffffffa02baa48>] nfs_revalidate_mapping+0x128/0x170 [nfs]
 [<ffffffffa02b7897>] nfs_file_read+0x77/0x130 [nfs]
 [<ffffffff8116c65a>] do_sync_read+0xfa/0x140
 [<ffffffff81091ca0>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff81167349>] ? do_huge_pmd_anonymous_page+0xc9/0x360
 [<ffffffff8120bf4b>] ? selinux_file_permission+0xfb/0x150
 [<ffffffff811ff3b6>] ? security_file_permission+0x16/0x20
 [<ffffffff8116d085>] vfs_read+0xb5/0x1a0
 [<ffffffff810d40a2>] ? audit_syscall_entry+0x272/0x2a0
 [<ffffffff8116d1c1>] sys_read+0x51/0x90
 [<ffffffff81013172>] system_call_fastpath+0x16/0x1b
INFO: task xdoio:1734 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
xdoio         D 0000000000000002     0  1734   1723 0x00000080
 ffff88003c861a88 0000000000000086 ffff8800ffffffff 00000aa0fed4a3ce
 ffff88003c861a18 ffff88003c86cf30 0000000000029b78 000000010041a2be
 ffff88003cdbd0a8 ffff88003c861fd8 0000000000010518 ffff88003cdbd0a8
Call Trace:
 [<ffffffff8109b9a9>] ? ktime_get_ts+0xa9/0xe0
 [<ffffffff8110c060>] ? sync_page+0x0/0x50
 [<ffffffff814c8a23>] io_schedule+0x73/0xc0
 [<ffffffff8110c09d>] sync_page+0x3d/0x50
 [<ffffffff814c929f>] __wait_on_bit+0x5f/0x90
 [<ffffffff8110c253>] wait_on_page_bit+0x73/0x80
 [<ffffffff81091ce0>] ? wake_bit_function+0x0/0x50
 [<ffffffffa02c7e64>] nfs_wb_page+0xb4/0xd0 [nfs]
 [<ffffffffa02b68de>] nfs_launder_page+0x4e/0x80 [nfs]
 [<ffffffff811233c6>] invalidate_inode_pages2_range+0x2f6/0x380
 [<ffffffff81123467>] invalidate_inode_pages2+0x17/0x20
 [<ffffffffa02baa48>] nfs_revalidate_mapping+0x128/0x170 [nfs]
 [<ffffffffa02b7897>] nfs_file_read+0x77/0x130 [nfs]
 [<ffffffff8116c65a>] do_sync_read+0xfa/0x140
 [<ffffffff81091ca0>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff81167349>] ? do_huge_pmd_anonymous_page+0xc9/0x360
 [<ffffffff8120bf4b>] ? selinux_file_permission+0xfb/0x150
 [<ffffffff811ff3b6>] ? security_file_permission+0x16/0x20
 [<ffffffff8116d085>] vfs_read+0xb5/0x1a0
 [<ffffffff810d40a2>] ? audit_syscall_entry+0x272/0x2a0
 [<ffffffff8116d1c1>] sys_read+0x51/0x90
 [<ffffffff81013172>] system_call_fastpath+0x16/0x1b
Comment 1 Jeff Layton 2011-04-28 16:24:23 UTC 
This is almost certainly a duplicate of bug 672305. Please reopen if you can reproduce on a more recent kernel (-130.el6 or above).

*** This bug has been marked as a duplicate of bug 672305 ***