[Ocfs2-devel] [QUESTION] what's lockres P000000000000000000000000000000?

[Eric Ren]

Hi all,

I found there is an odd lockres P000000000000000000000000000000 for me, so I'm
curious about what this lockres stands for?

1. #dmesg
...
[ 7657.554057] (ocfs2dc,4061,1):ocfs2_process_blocked_lock:3904 lockres
P000000000000000000000000000000 blocked
[ 7657.554059] (ocfs2dc,4061,1):ocfs2_prepare_downconvert:3248 lockres
P000000000000000000000000000000, level 5 => 0, blocking 5
[ 7657.554062] (ocfs2dc,4061,1):ocfs2_downconvert_lock:3266 lockres
P000000000000000000000000000000, level 5 => 0
[ 7657.554066] (ocfs2dc,4061,1):ocfs2_process_blocked_lock:3928 lockres
P000000000000000000000000000000, requeue = no.
[ 7657.554070] (dlm_astd,4062,1):ocfs2_locking_ast:1076 AST fired for
lockres M0000000000000000011a1800000000, action 3, unlock 0, level 5 =>
0
[ 7657.554073] (dlm_astd,4062,1):ocfs2_locking_ast:1076 AST fired for
lockres P000000000000000000000000000000, action 3, unlock 0, level 5 =>
0
...

2. n1:/debug/dlm # echo "locate <P000000000000000000000000000000>" |
debugfs.ocfs2 /dev/sda2 
debugfs.ocfs2 1.8.2
debugfs: usage: locate <inode#>
debugfs: 

3. n1:/debug/dlm # echo "stat <P000000000000000000000000000000>" |
debugfs.ocfs2 /dev/sda2 
debugfs.ocfs2 1.8.2
debugfs: stat: Directory entry not found
'<P000000000000000000000000000000>'
debugfs: 

4. n1:/debug/dlm # echo "locate <M0000000000000000011a1800000000>" |
debugfs.ocfs2 /dev/sda2 
debugfs.ocfs2 1.8.2
debugfs:        72216   /file
debugfs: 

I know "M" refter to Metadata, but what's "P" here refer to?
Any help will be appreciated!

Thanks,
Eric