[Ocfs2-users] null pointer dereference

[Pawel]

It was done multiple times,
even more: system was recreated  by mkfs.
Still the same behavior...


Pawel

On 2012-08-22 04:21, Sunil Mushran wrote:
> You may want to run a full fsck on the fs.
>
> fsck.ocfs2 -fy /dev/xxxx
>
> On Tue, Aug 21, 2012 at 12:49 AM, Pawel <pzlist at mp.pl 
> <mailto:pzlist at mp.pl>> wrote:
>
>     Hi,
>     After upgrading ocfs2 my cluster is instable.
>
>     At least ones per week I can see:
>     kernel panic: Null pointer dereference  at 00048
>     o2dlm_blocking_ast_wrapper + 0x8/0x20 [ocfs2_stack_o2cb]
>     stack:
>     dlm_do_local_bast [ocfs2_dlm]
>     dlm_lookup_lockers [ocfs2_dlm]
>     dlm_proxy_ast_handler
>     add_timer
>     ..
>
>     After that sometimes deadlock happens on another nodes. Entire cluster
>     restart solve the issue.
>     I see in log:
>     (dlm_thread,7227,3):dlm_send_proxy_ast_msg:484 ERROR:
>     ECB9442E19A94EAC896641BFADD55E4B: res M0000000000000001f411c900000000,
>     error -107 send AST to node 4
>     (dlm_thread,7227,3):dlm_flush_asts:605 ERROR: status = -107
>     o2net: No connection established with node 4 after 10.0 seconds,
>     giving up.
>     o2net: No connection established with node 4 after 10.0 seconds,
>     giving up.
>     o2net: No connection established with node 4 after 10.0 seconds,
>     giving up.
>     (dlm_thread,7227,4):dlm_send_proxy_ast_msg:484 ERROR:
>     ECB9442E19A94EAC896641BFADD55E4B: res M0000000000000001f411c900000000,
>     error -107 send AST to node 4
>     (dlm_thread,7227,4):dlm_flush_asts:605 ERROR: status = -107
>     o2cb: o2dlm has evicted node 4 from domain
>     ECB9442E19A94EAC896641BFADD55E4B
>     o2cb: o2dlm has evicted node 4 from domain
>     ECB9442E19A94EAC896641BFADD55E4B
>     o2dlm: Begin recovery on domain ECB9442E19A94EAC896641BFADD55E4B
>     for node 4
>     o2dlm: Node 5 (he) is the Recovery Master for the dead node 4 in
>     domain
>     ECB9442E19A94EAC896641BFADD55E4B
>     o2dlm: End recovery on domain ECB9442E19A94EAC896641BFADD55E4B
>
>
>     Additionaly ~4 times per day I see:
>
>     ocfs2_check_dir_for_entry:2119 ERROR: status = -17
>     ocfs2_mknod:459 ERROR: status = -17
>     ocfs2_create:629 ERROR: status = -17
>
>
>     I currently use kernel 3.4.2
>     my filesystem has been created with:
>     -N 8-b 4096 -C 32768 --fs-features
>     backup-super,strict-journal-super,sparse,extended-slotmap,inline-data,metaecc,xattr,indexed-dirs,refcount,discontig-bg,unwritten,usrquota,grpquota
>
>     Could you tell me what could make my system instable? Which feature ?
>
>     Thanks for any  help
>
>     Pawel
>
>
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>

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