Details
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Bug
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Resolution: Fixed
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Minor
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None
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Lustre 1.8.6
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None
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lustre-1.8.3.0-6chaos_2.6.18_93chaos.ch4.3
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3
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10407
Description
When the sysadmins attempted to unmount the OSTs on a number of OSSs to shutdown them down for scheduled maintenance, six of the nodes kernel panicked.
They all say:
Kernel BUG at fs/ldiskfs/mballoc.c:3714
RIP (for what its worth) is the same for each: :ldiskfs:ldiskfs_mb_release_inode_pa
The stacks are also the same:
sync_buffer
out_of_line_wait_on_bit
__wait_on_buffer
:ldiskfs:bh_submit_read
:ldiskfs:ldiskfs_mb_discard_inode_preallocations
:ldiskfs:ldiskfs_discard_reservation
:ldiskfs:ldiskfs_clear_node
clear_inode
dispose_list
invalidate_inodes
generic_shutdown_super
kill_block_super
deactivate_super
mntput_no_expire
:obdclass:unlock_mntput
:obdclass:server_put_super
invalidate_inodes
generic_shutdown_super
kill_anon_super
:obdclass:lustre_kill_super
deactivate_super
mntput_no_expire
path_release_on_umount
sys_umount
sys_newstat
system_call
I apologize for any typos. That had to be copied by hand.