This is not a xen problem. I believe it's a gpfs problem on the
shutdown/umount path. We're using gpfs with a kernel version that it
doesn't support yet and I have fixed problems related to clear_inode
before (Linux has changed some interfaces in the vfs layer on 2.6.17).

Dilma


David M Daly writes:
 > I got the following error this morning from the console on one of our 
 > JS21s. I had a program that was supposed to ssh into the blade and reboot 
 > it after shutting down GPFS. I don't think it did any of the gpfs shutdown 
 > before crashing. Here is the error message. I saw it because I happened to 
 > be on the SOL console ( I wouldn't normally be). This is the first time 
 > I'm noticing this. I will post again if I see more errors of this kind. 
 > 
 > cso85:/ # cpu 0x2: Vector: 700 (Program Check) at [c00000017b5a7340]
 >     pc: c0000000000f62bc: .clear_inode+0x3c/0x120
 >     lr: c0000000000f62b4: .clear_inode+0x34/0x120
 >     sp: c00000017b5a75c0
 >    msr: 9000000000029032
 >   current = 0xc00000002facc540
 >   paca    = 0xc0000000005ae600
 >     pid   = 17947, comm = umount
 > kernel BUG in clear_inode at 
 > /root/xen-maria-latest/linux/linux-xen-ppc/fs/inode.c:251!
 > enter ? for help
 > 2:mon>
 > 2:mon>
 > 
 > This is built from Maria's tree on 11-9. 
 > 
 > David Daly
 > Research Staff Member
 > 32-003 IBM T.J. Watson Research Center
 > Yorktown Heights, NY, 10958
 > (914) 945-1845, T/L 862-1845
 > <br><font size=2 face="sans-serif">I got the following error this morning
 > from the console on one of our JS21s. I had a program that was supposed
 > to ssh into the blade and reboot it after shutting down GPFS. I don't think
 > it did any of the gpfs shutdown before crashing. Here is the error message.
 > I saw it because I happened to be on the SOL console ( I wouldn't normally
 > be). This is the first time I'm noticing this. I will post again if I see
 > more errors of this kind. </font>
 > <br>
 > <br><font size=2 face="sans-serif">cso85:/ # cpu 0x2: Vector: 700 (Program
 > Check) at [c00000017b5a7340]</font>
 > <br><font size=2 face="sans-serif">&nbsp; &nbsp; pc: c0000000000f62bc:
 > .clear_inode+0x3c/0x120</font>
 > <br><font size=2 face="sans-serif">&nbsp; &nbsp; lr: c0000000000f62b4:
 > .clear_inode+0x34/0x120</font>
 > <br><font size=2 face="sans-serif">&nbsp; &nbsp; sp: c00000017b5a75c0</font>
 > <br><font size=2 face="sans-serif">&nbsp; &nbsp;msr: 9000000000029032</font>
 > <br><font size=2 face="sans-serif">&nbsp; current = 0xc00000002facc540</font>
 > <br><font size=2 face="sans-serif">&nbsp; paca &nbsp; &nbsp;= 
 > 0xc0000000005ae600</font>
 > <br><font size=2 face="sans-serif">&nbsp; &nbsp; pid &nbsp; = 17947, comm
 > = umount</font>
 > <br><font size=2 face="sans-serif">kernel BUG in clear_inode at 
 > /root/xen-maria-latest/linux/linux-xen-ppc/fs/inode.c:251!</font>
 > <br><font size=2 face="sans-serif">enter ? for help</font>
 > <br><font size=2 face="sans-serif">2:mon&gt;</font>
 > <br><font size=2 face="sans-serif">2:mon&gt;</font>
 > <br>
 > <br><font size=2 face="sans-serif">This is built from Maria's tree on 11-9.
 > </font>
 > <br>
 > <br><font size=2 face="sans-serif">David Daly<br>
 > Research Staff Member<br>
 > 32-003 IBM T.J. Watson Research Center<br>
 > Yorktown Heights, NY, 10958<br>
 > (914) 945-1845, T/L 
 > 862-1845</font>_______________________________________________
 > Xen-ppc-devel mailing list
 > Xen-ppc-devel@lists.xensource.com
 > http://lists.xensource.com/xen-ppc-devel

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