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[Xen-users] Xen 4.1.1 DomU Partition table disappearing

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Xen 4.1.1 DomU Partition table disappearing
From: Hans de Bruin <jmdebruin@xxxxxxxxx>
Date: Sun, 03 Jul 2011 23:06:16 +0200
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I have just installed a new xen server: xen 4.1.1, 64bit xen/stable-2.6.32.x + USB pass throug patch, Atom D510.

The first DomU I created is running fine, until I shut it down. At the moment the guest disappears from xentop, the partitiontable gets wiped out. I have checked this by running watch 'fdisk -l /dev/vg4/temp' on Dom0

hex dump after shutdown:

0000000 3bc0 9839 0000 0200 0000 1b01 0000 0000
0000010 0000 0000 0000 0000 0000 0000 0000 0000
*
0000030 0000 0000 104e 52d4 5802 ca72 0000 0000
0000040 0000 0000 0000 0000 0000 0000 0000 0000
*
0100400 0001 0000 ffff 0003 0000 0000 1e76 a12d
0100410 b410 e54c cf9e 5c38 d250 37b0 0000 0000
0100420 0000 0000 0000 0000 0000 0000 0000 0000
*
0100ff0 0000 0000 0000 5753 5041 5053 4341 3245
0101000 0401 0000 0411 0000 0421 0000 547b 0000
0101010 01bf 0004 0000 0000 0000 0000 0000 74f4
0101020 0402 0000 0412 0000 0621 0000 0000 0000
0101030 024f 0004 0000 0000 0000 0000 0000 d53d
0101040 0403 0000 0413 0000 0821 0000 0000 0000
0101050 021f 0004 0000 0000 0000 0000 0000 737b
0101060 0404 0000 0414 0000 0a21 0000 0000 0d2c
0101070 00df 0004 0000 0000 0000 0000 0d2c ac78
0101080 0405 0000 0415 0000 0c21 0000 0000 2000
0101090 0000 0005 0000 0000 0000 0000 2000 a7e8
01010a0 0406 0000 0416 0000 0e21 0000 0000 2000
01010b0 0000 0005 0000 0000 0000 0000 2000 18c2

hexdump after repairing de partition table (1G swap, 15G ext4)

0000000 0000 0000 0000 0000 0000 0000 0000 0000
*
00001b0 0000 0000 0000 0000 81a1 ca45 0000 2000
00001c0 0021 aa82 8228 0800 0000 0000 0020 aa00
00001d0 8229 aa83 2802 0800 0020 f800 01df 0000
00001e0 0000 0000 0000 0000 0000 0000 0000 0000
00001f0 0000 0000 0000 0000 0000 0000 0000 aa55
0000200 0000 0000 0000 0000 0000 0000 0000 0000
*
0100400 0001 0000 ffff 0003 0000 0000 1e76 a12d
0100410 b410 e54c cf9e 5c38 d250 37b0 0000 0000
0100420 0000 0000 0000 0000 0000 0000 0000 0000
*
0100ff0 0000 0000 0000 5753 5041 5053 4341 3245
0101000 0401 0000 0411 0000 0421 0000 547b 0000
0101010 01bf 0004 0000 0000 0000 0000 0000 74f4
0101020 0402 0000 0412 0000 0621 0000 0000 0000
0101030 024f 0004 0000 0000 0000 0000 0000 d53d
0101040 0403 0000 0413 0000 0821 0000 0000 0000
0101050 021f 0004 0000 0000 0000 0000 0000 737b
0101060 0404 0000 0414 0000 0a21 0000 0000 0d2c
0101070 00df 0004 0000 0000 0000 0000 0d2c ac78
0101080 0405 0000 0415 0000 0c21 0000 0000 2000

--
Hans

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