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<p class=MsoNormal><span lang=EN-US>Hello all,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I have Centos 5.2, kernel 2.6.18-92.1.22.el5.centos.plus,
gfs2-utils-0.1.44-1.el5_2.1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The cluster is two nodes, using DRBD 8.3.2
as the shared block device, and CLVM over it, and GFS2 over it.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>After an ls in a directory within the GFS2 file
system I got the following errors.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>…………………<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>GFS2: fsid=tweety:gfs2-00.0: fatal: invalid
metadata block<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>GFS2: fsid=tweety:gfs2-00.0: bh = 522538
(magic number)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>GFS2: fsid=tweety:gfs2-00.0: function =
gfs2_meta_indirect_buffer, file = fs/gfs2/meta_io.c, line = 332<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>GFS2: fsid=tweety:gfs2-00.0: about to
withdraw this file system<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>GFS2: fsid=tweety:gfs2-00.0: telling LM to
withdraw<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>GFS2: fsid=tweety:gfs2-00.0: withdrawn<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Call Trace:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff885c2146>]
:gfs2:gfs2_lm_withdraw+0xc1/0xd0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff800639de>]
__wait_on_bit+0x60/0x6e<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff80014f46>]
sync_buffer+0x0/0x3f<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff80063a58>]
out_of_line_wait_on_bit+0x6c/0x78<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff8009d0ca>] wake_bit_function+0x0/0x23<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff885d3f7f>]
:gfs2:gfs2_meta_check_ii+0x2c/0x38<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff885c5a06>]
:gfs2:gfs2_meta_indirect_buffer+0x104/0x15e<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff885c095a>]
:gfs2:gfs2_inode_refresh+0x22/0x2ca<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff8009d0ca>]
wake_bit_function+0x0/0x23<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff885bfd9c>]
:gfs2:inode_go_lock+0x29/0x57<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff885bef04>]
:gfs2:glock_wait_internal+0x1d4/0x23f<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff885bf11d>]
:gfs2:gfs2_glock_nq+0x1ae/0x1d4<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff885cb053>]
:gfs2:gfs2_lookup+0x58/0xa7<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff885cb04b>]
:gfs2:gfs2_lookup+0x50/0xa7<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff800226dd>]
d_alloc+0x174/0x1a9<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff8000cbff>]
do_lookup+0xe5/0x1e6<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff80009fac>]
__link_path_walk+0xa01/0xf42<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff800c4fe7>]
zone_statistics+0x3e/0x6d<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff8000e7cd>]
link_path_walk+0x5c/0xe5<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff885bdd6f>]
:gfs2:gfs2_glock_put+0x26/0x133<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff8000c99e>]
do_path_lookup+0x270/0x2e8<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff80012336>]
getname+0x15b/0x1c1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff80023741>]
__user_walk_fd+0x37/0x4c<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff8003ed91>]
vfs_lstat_fd+0x18/0x47<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff8002a9d3>]
sys_newlstat+0x19/0x31<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> [<ffffffff8005d229>]
tracesys+0x71/0xe0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> </span>[<ffffffff8005d28d>]
tracesys+0xd5/0xe0<span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>…………………….<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Obviously ls was not the cause of the
problem but it triggered the events.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>From the other node I can have access on
the directory that on which the ‘ls’ triggered the above. The
directory is full of files like that:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>?--------- ? ? ? ?
? sched_reply<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Almost 50% of the files are in shown like
that with ls.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The questions are:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span
lang=EN-US><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>Is this a (new) GFS2 bug?<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span
lang=EN-US><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>Is this a recoverable problem (and
how)?<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span
lang=EN-US><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>After a GFS2 file system gets
withdrawn, how do we make the node to use it again, without rebooting?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thank you all for your time.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Theophanis Kontogiannis<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
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