[Xen-users] BUG after create snapshot in a script - Xen 4.01-2.6.32-5-xen-amd64

["Guido Hecken" <guido.hecken@xxxxxxxxxxxxx>]

Von: Rémi BERNIER [mailto:R.BERNIER@xxxxxxxxxxx] 
Gesendet: Mittwoch, 11. Mai 2011 11:52
An: Guido Hecken
Cc: Xen-users@xxxxxxxxxxxxxxxxxxx; xen-users-bounces@xxxxxxxxxxxxxxxxxxx
Betreff: RE: [Xen-users] BUG after create snapshot in a script - Xen 4.01 
-2.6.32-5-xen-amd64


Thanks Guido for your answer. 

I haven't seen this report.... oups.. 
I have add the "squeeze-proposed-updates" in the sources.list and i have update 
the package linux-image-2.6.32-5-xen-amd64 - 2.6.32-31 to 2.6.32-34 
All of my test script works fine now. No bug with the lvcreate and lvremove.. 

Regards, 
Remi

Hi Remi,
great to hear it's working for you.
Did you leave the proposed-updates active on your server or did you use it only 
once to install the linux-image packet and made it inactive afterwards?
I'm a bit unassured using them on a production server.

Regards
Guido


Hi,

have the same bug here!
It should be fixed as:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=614400

I'm not 100% shure but the fix should be available under proposed updates for 
squeeze.
You can activate them under /etc/apt/sources.list
Add something like this to include "proposed updates"
# deb http://ftp-stud.hs-esslingen.de/debian squeeze-proposed-updates main 
non-free contrib
I didn't try it in production environment until now and don't know which 
impacts it might have to "mix" different deb sources.

Regards
Guido 

________________________________________
Von: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] Im Auftrag von Rémi BERNIER
Gesendet: Dienstag, 10. Mai 2011 14:07
An: Xen-users@xxxxxxxxxxxxxxxxxxx
Betreff: [Xen-users] BUG after create snapshot in a script - Xen 4.01 
-2.6.32-5-xen-amd64


Hello list, 

I have met a Bug in the debian squeeze with the kernel 2.6.32-5-xen-amd64 and 
Xen 4.0.1 
I have try with two differents environement, but i have the same result... 
I haven't this bug when i use just the kernel  2.6.32-5-xen-amd64 without the 
hypervisor Xen 4.0.1 and on the debian lenny with the kernel 2.6.26-2-xen-amd64 
+ Xen 3.2.1. 
When i run a script who create a snapshot of a LV, i have this Bug error: 

Just after the "lvcreate -s -n Snap -L 1G /dev/data/svsqueeze" in the script 

May 10 12:39:29 asusf3ja kernel: [   55.006801] BUG: unable to handle kernel 
paging request at ffff88000f0cc010 
May 10 12:39:29 asusf3ja kernel: [   55.006921] IP: [<ffffffff8100e428>] 
xen_set_pmd+0x15/0x2c 
May 10 12:39:29 asusf3ja kernel: [   55.007000] PGD 1002067 PUD 1006067 PMD 
6a067 PTE 801000000f0cc065 
May 10 12:39:29 asusf3ja kernel: [   55.007162] Oops: 0003 [#1] SMP 
May 10 12:39:29 asusf3ja kernel: [   55.007261] last sysfs file: 
/sys/devices/virtual/block/dm-0/dm/suspended 
May 10 12:39:29 asusf3ja kernel: [   55.007308] CPU 1 
May 10 12:39:29 asusf3ja kernel: [   55.007374] Modules linked in: dm_snapshot 
sco bridge stp bnep rfcomm l2cap bluetooth parport_pc ppdev cpufreq_userspace 
cpufreq_stats cpufreq_powersave lp cpufreq_conservative parport xen_evtchn 
xenfs uinput fuse loop firewire_sbp2 snd_hda_codec_si3054 snd_hda_codec_realtek 
snd_hda_intel snd_hda_codec snd_hwdep arc4 snd_pcm radeon ecb joydev snd_timer 
ttm drm_kms_helper stkwebcam i2c_i801 snd soundcore iwl3945 drm i2c_algo_bit 
videodev v4l1_compat v4l2_compat_ioctl32 iwlcore snd_page_alloc i2c_core 
psmouse pcspkr evdev rng_core asus_laptop mac80211 serio_raw cfg80211 rfkill 
battery ac button video output processor acpi_processor ext4 mbcache jbd2 crc16 
dm_mod sg sr_mod cdrom sd_mod crc_t10dif ata_generic uhci_hcd sdhci_pci sdhci 
ehci_hcd ata_piix thermal firewire_ohci libata mmc_core led_class thermal_sys 
ricoh_mmc firewire_core crc_itu_t r8169 mii usbcore nls_base scsi_mod [last 
unloaded: scsi_wait_scan] 
May 10 12:39:29 asusf3ja kernel: [   55.009039] Pid: 1907, comm: dmsetup_env 
Not tainted 2.6.32-5-xen-amd64 #1 F3JA 
May 10 12:39:29 asusf3ja kernel: [   55.009039] RIP: e030:[<ffffffff8100e428>] 
 [<ffffffff8100e428>] xen_set_pmd+0x15/0x2c 
May 10 12:39:29 asusf3ja kernel: [   55.009039] RSP: e02b:ffff88000264db18 
 EFLAGS: 00010246 
May 10 12:39:29 asusf3ja kernel: [   55.009039] RAX: 0000000000000000 RBX: 
ffff88000f0cc010 RCX: ffff880000000000 
May 10 12:39:29 asusf3ja kernel: [   55.009039] RDX: ffffea0000000000 RSI: 
0000000001d4a000 RDI: ffff88000f0cc010 
May 10 12:39:29 asusf3ja kernel: [   55.009039] RBP: 0000000000000000 R08: 
0000000001d4a000 R09: ffff88000fc03c00 
May 10 12:39:29 asusf3ja kernel: [   55.009039] R10: 0000000000000000 R11: 
ffff880002710760 R12: 000000000061c000 
May 10 12:39:29 asusf3ja kernel: [   55.009039] R13: 0000000000400000 R14: 
ffff88000f0cc010 R15: ffff88000f396000 
May 10 12:39:29 asusf3ja kernel: [   55.009039] FS:  00007f7138d0b700(0000) 
GS:ffff880003356000(0000) knlGS:0000000000000000 
May 10 12:39:29 asusf3ja kernel: [   55.009039] CS:  e033 DS: 0000 ES: 0000 
CR0: 000000008005003b 
May 10 12:39:29 asusf3ja kernel: [   55.009039] CR2: ffff88000f0cc010 CR3: 
000000000eda9000 CR4: 0000000000002660 
May 10 12:39:29 asusf3ja kernel: [   55.009039] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000 
May 10 12:39:29 asusf3ja kernel: [   55.009039] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400 
May 10 12:39:29 asusf3ja kernel: [   55.009039] Process dmsetup_env (pid: 1907, 
threadinfo ffff88000264c000, task ffff8800025fc6a0) 
May 10 12:39:29 asusf3ja kernel: [   55.009039] Stack: 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  ffff880000000000 
0000000000600000 0000000000400000 ffffffff810cfae2 
May 10 12:39:29 asusf3ja kernel: [   55.009039] <0> ffff88000264dfd8 
000000000edb1067 0000000003192ad3 0000000000000000 
May 10 12:39:29 asusf3ja kernel: [   55.009039] <0> 0000000000000000 
000000000061bfff 000000000061bfff 0000000001c00000 
May 10 12:39:29 asusf3ja kernel: [   55.009039] Call Trace: 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff810cfae2>] ? 
free_pgd_range+0x226/0x3bf 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff810cfd17>] ? 
free_pgtables+0x9c/0xbd 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff810d14f9>] ? 
exit_mmap+0xef/0x148 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff8104cc7d>] ? 
mmput+0x3c/0xdf 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff810f470e>] ? 
flush_old_exec+0x460/0x54c 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff81127468>] ? 
load_elf_binary+0x0/0x1954 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff81127805>] ? 
load_elf_binary+0x39d/0x1954 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff810cc7ce>] ? 
follow_page+0x2ad/0x303 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff810ce392>] ? 
__get_user_pages+0x3ea/0x47b 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff810f5203>] ? 
get_arg_page+0x61/0x110 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff81127468>] ? 
load_elf_binary+0x0/0x1954 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff810f3ede>] ? 
search_binary_handler+0xb4/0x245 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff810f56df>] ? 
do_execve+0x1e4/0x2c3 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff81010500>] ? 
sys_execve+0x35/0x4c 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  [<ffffffff81011f9a>] ? 
stub_execve+0x6a/0xc0 
May 10 12:39:29 asusf3ja kernel: [   55.009039] Code: fb ff ff e8 d2 f4 01 00 
bf 01 00 00 00 e8 c9 ea ff ff 59 5e 5b c3 55 48 89 f5 53 48 89 fb 48 83 ec 08 
e8 6e e3 ff ff 84 c0 75 08 <48> 89 2b 41 59 5b 5d c3 41 58 48 89 df 48 89 ee 5b 
5d e9 7e ff 
May 10 12:39:29 asusf3ja kernel: [   55.009039] RIP  [<ffffffff8100e428>] 
xen_set_pmd+0x15/0x2c 
May 10 12:39:29 asusf3ja kernel: [   55.009039]  RSP <ffff88000264db18> 
May 10 12:39:29 asusf3ja kernel: [   55.009039] CR2: ffff88000f0cc010 
May 10 12:39:29 asusf3ja kernel: [   55.009039] ---[ end trace eb86c0dbc5e972a3 
]--- 


Anyone have met this problem ? 
Thanks in advance for your answer. 
Regards, 
Rémi 


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