[Bug 1719282] Re: Unable to boot after drive-mirror
[Expired for QEMU because there has been no activity for 60 days.]
** Changed in: qemu
Status: Incomplete => Expired
--
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https://bugs.launchpad.net/bugs/1719282
Title:
Unable to boot after drive-mirror
Status in QEMU:
Expired
Bug description:
Hi,
I am using "drive-mirror" qmp block-job command to transfer VM disk image to
other path (different physical disk on host).
Unfortunately after shutting down and starting from new image, VM is unable
to boot and qrub enters rescue mode displaying following error:
```
error: file '/grub/i386-pc/normal.mod' not found.
Entering rescue mode...
grub rescue>
```
To investigate the problem, I compared both RAW images using linux
"cmp -l" command and found out that they differ in 569028 bytes
starting from address 185598977 to 252708864 which are located on
/boot partition.
So I mounted /boot partition of mirrored RAW image on host OS and it
seems that file-system is broken and grub folder is not recognized.
But /boot on original RAW image has no problem.
Mirrored Image:
ls -l /mnt/vm-boot/
ls: cannot access /mnt/vm-boot/grub: Structure needs cleaning
total 38168
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
d? ? ?? ?? grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
Original Image:
ls /mnt/vm-boot/ -l
total 38173
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
drwxr-xr-x 5 root root 5120 Nov 2 2016 grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
ls /mnt/vm-boot/grub/ -l
total 2376
-rw-r--r-- 1 root root 48 Oct 7 2013 device.map
drwxr-xr-x 2 root root1024 Oct 10 2015 fonts
-r--r--r-- 1 root root9432 Nov 2 2016 grub.cfg
-rw-r--r-- 1 root root1024 Oct 7 2013 grubenv
drwxr-xr-x 2 root root6144 Aug 6 2016 i386-pc
drwxr-xr-x 2 root root1024 Aug 6 2016 locale
-rw-r--r-- 1 root root 2400500 Aug 6 2016 unicode.pf2
qemu Version: 2.7.0-10
Host OS: Debian 8x64
Guest OS: Debian 8x64
QMP Commands log:
socat UNIX-CONNECT:/var/run/qemu-server/48016.qmp STDIO
{"QMP": {"version": {"qemu": {"micro": 0, "minor": 7, "major": 2}, "package":
"pve-qemu-kvm_2.7.0-10"}, "capabilities": []}}
{ "execute": "qmp_capabilities" }
{"return": {}}
{ "execute": "drive-mirror",
"arguments": {
"device": "drive-ide0",
"target": "/diskc/48016/vm-48016-disk-2.raw",
"sync": "full",
"mode": "absolute-paths",
"speed": 0
}
}
{"return": {}}
{"timestamp": {"seconds": 1506331591, "microseconds": 623095}, "event":
"BLOCK_JOB_READY", "data": {"device": "drive-ide0", "len": 269445758976,
"offset": 269445758976, "speed": 0, "type": "mirror"}}
{"timestamp": {"seconds": 1506332641, "microseconds": 245272}, "event":
"SHUTDOWN"}
{"timestamp": {"seconds": 1506332641, "microseconds": 377751}, "event":
"BLOCK_JOB_COMPLETED", "data": {"device": "drive-ide0", "len": 271707340800,
"offset": 271707340800, "speed": 0, "type": "mirror"}}
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1719282/+subscriptions
[Bug 1719282] Re: Unable to boot after drive-mirror
OK, so we're only talking about migrating a disk and not a whole VM, I
misunderstood. However... are you using qemu *2.7*? That's quite old!
Before digging into this further I need to insist that you try on a
supported release, either 4.0.1, 4.1.1, or 4.2.0.
** Changed in: qemu
Status: New => Incomplete
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1719282
Title:
Unable to boot after drive-mirror
Status in QEMU:
Incomplete
Bug description:
Hi,
I am using "drive-mirror" qmp block-job command to transfer VM disk image to
other path (different physical disk on host).
Unfortunately after shutting down and starting from new image, VM is unable
to boot and qrub enters rescue mode displaying following error:
```
error: file '/grub/i386-pc/normal.mod' not found.
Entering rescue mode...
grub rescue>
```
To investigate the problem, I compared both RAW images using linux
"cmp -l" command and found out that they differ in 569028 bytes
starting from address 185598977 to 252708864 which are located on
/boot partition.
So I mounted /boot partition of mirrored RAW image on host OS and it
seems that file-system is broken and grub folder is not recognized.
But /boot on original RAW image has no problem.
Mirrored Image:
ls -l /mnt/vm-boot/
ls: cannot access /mnt/vm-boot/grub: Structure needs cleaning
total 38168
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
d? ? ?? ?? grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
Original Image:
ls /mnt/vm-boot/ -l
total 38173
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
drwxr-xr-x 5 root root 5120 Nov 2 2016 grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
ls /mnt/vm-boot/grub/ -l
total 2376
-rw-r--r-- 1 root root 48 Oct 7 2013 device.map
drwxr-xr-x 2 root root1024 Oct 10 2015 fonts
-r--r--r-- 1 root root9432 Nov 2 2016 grub.cfg
-rw-r--r-- 1 root root1024 Oct 7 2013 grubenv
drwxr-xr-x 2 root root6144 Aug 6 2016 i386-pc
drwxr-xr-x 2 root root1024 Aug 6 2016 locale
-rw-r--r-- 1 root root 2400500 Aug 6 2016 unicode.pf2
qemu Version: 2.7.0-10
Host OS: Debian 8x64
Guest OS: Debian 8x64
QMP Commands log:
socat UNIX-CONNECT:/var/run/qemu-server/48016.qmp STDIO
{"QMP": {"version": {"qemu": {"micro": 0, "minor": 7, "major": 2}, "package":
"pve-qemu-kvm_2.7.0-10"}, "capabilities": []}}
{ "execute": "qmp_capabilities" }
{"return": {}}
{ "execute": "drive-mirror",
"arguments": {
"device": "drive-ide0",
"target": "/diskc/48016/vm-48016-disk-2.raw",
"sync": "full",
"mode": "absolute-paths",
"speed": 0
}
}
{"return": {}}
{"timestamp": {"seconds": 1506331591, "microseconds": 623095}, "event":
"BLOCK_JOB_READY", "data": {"device": "drive-ide0", "len": 269445758976,
"offset": 269445758976, "speed": 0, "type": "mirror"}}
{"timestamp": {"seconds": 1506332641, "microseconds": 245272}, "event":
"SHUTDOWN"}
{"timestamp": {"seconds": 1506332641, "microseconds": 377751}, "event":
"BLOCK_JOB_COMPLETED", "data": {"device": "drive-ide0", "len": 271707340800,
"offset": 271707340800, "speed": 0, "type": "mirror"}}
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1719282/+subscriptions
[Qemu-devel] [Bug 1719282] Re: Unable to boot after drive-mirror
There is no source or destination machine. I used drive-mirror to
transfer VM Image to different physical disk on same machine ("mode":
"absolute-paths"). After block-job-complete and shutting down vm, I
start vm again with same command with different drive path pointing to
mirrored image. "-drive 'file=MIRRORED_IMAGE_PATH..".
* Command line used to launch VM:
```
/usr/bin/kvm -id 48016 -chardev
'socket,id=qmp,path=/var/run/qemu-server/48016.qmp,server,nowait' -mon
'chardev=qmp,mode=control' -pidfile /var/run/qemu-server/48016.pid -daemonize
-smbios 'type=1,uuid=7a4b5ebc-a230-4e57-8ebc-4979a7b5a378' -name srv34197 -smp
'4,sockets=1,cores=4,maxcpus=4' -nodefaults -boot
'menu=on,strict=on,reboot-timeout=1000,splash=/usr/share/qemu-server/bootsplash.jpg'
-vga cirrus -vnc unix:/var/run/qemu-server/48016.vnc,x509,password -cpu
kvm64,+lahf_lm,+sep,+kvm_pv_unhalt,+kvm_pv_eoi,enforce -m 8192 -k en-us -device
'pci-bridge,id=pci.1,chassis_nr=1,bus=pci.0,addr=0x1e' -device
'pci-bridge,id=pci.2,chassis_nr=2,bus=pci.0,addr=0x1f' -device
'piix3-usb-uhci,id=uhci,bus=pci.0,addr=0x1.0x2' -device
'usb-tablet,id=tablet,bus=uhci.0,port=1' -chardev
'socket,path=/var/run/qemu-server/48016.qga,server,nowait,id=qga0' -device
'virtio-serial,id=qga0,bus=pci.0,addr=0x8' -device
'virtserialport,chardev=qga0,name=org.qemu.guest_agent.0' -device
'virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3' -iscsi
'initiator-name=iqn.1993-08.org.debian:01:6f368eef312d' -drive
'file=/var/lib/vz/images/48016/vm-48016-disk-1.raw,if=none,id=drive-ide0,format=raw,cache=none,aio=native,detect-zeroes=on'
-device 'ide-hd,bus=ide.0,unit=0,drive=drive-ide0,id=ide0,bootindex=100'
-drive
'file=/var/lib/vz/template/iso/sysresccd-v03.iso,if=none,id=drive-ide2,media=cdrom,aio=threads'
-device 'ide-cd,bus=ide.1,unit=0,drive=drive-ide2,id=ide2,bootindex=200'
-netdev
'type=tap,id=net0,ifname=tap48016i0,script=/var/lib/qemu-server/pve-bridge,downscript=/var/lib/qemu-server/pve-bridgedown'
-device
'rtl8139,mac=D6:89:56:3F:38:1F,netdev=net0,bus=pci.0,addr=0x12,id=net0' -netdev
'type=tap,id=net1,ifname=tap48016i1,script=/var/lib/qemu-server/pve-bridge,downscript=/var/lib/qemu-server/pve-bridgedown'
-device 'rtl8139,mac=66:92:13:4A:6B:7E,netdev=net1,bus=pci.0,addr=0x13,id=net1'
```
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1719282
Title:
Unable to boot after drive-mirror
Status in QEMU:
New
Bug description:
Hi,
I am using "drive-mirror" qmp block-job command to transfer VM disk image to
other path (different physical disk on host).
Unfortunately after shutting down and starting from new image, VM is unable
to boot and qrub enters rescue mode displaying following error:
```
error: file '/grub/i386-pc/normal.mod' not found.
Entering rescue mode...
grub rescue>
```
To investigate the problem, I compared both RAW images using linux
"cmp -l" command and found out that they differ in 569028 bytes
starting from address 185598977 to 252708864 which are located on
/boot partition.
So I mounted /boot partition of mirrored RAW image on host OS and it
seems that file-system is broken and grub folder is not recognized.
But /boot on original RAW image has no problem.
Mirrored Image:
ls -l /mnt/vm-boot/
ls: cannot access /mnt/vm-boot/grub: Structure needs cleaning
total 38168
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
d? ? ?? ?? grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
Original Image:
ls /mnt/vm-boot/ -l
total 38173
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
drwxr-xr-x 5 root root 5120 Nov 2 2016 grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
ls /mnt/vm-boot/grub/ -l
total 2376
-rw-r--r-- 1 root root 48 Oct 7 2013 device.map
drwxr-xr-x 2 root root1024 Oct 10 2015 fonts
[Qemu-devel] [Bug 1719282] Re: Unable to boot after drive-mirror
It *looks* to me at a glance like the sequence should be safe, but I
don't have any hunches for what could be going wrong, or why.
Can you please post:
(1) The command-line used to launch QEMU on the source machine, and
(2) The command-line used to launch QEMU on the destination machine from the
mirrored image?
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1719282
Title:
Unable to boot after drive-mirror
Status in QEMU:
New
Bug description:
Hi,
I am using "drive-mirror" qmp block-job command to transfer VM disk image to
other path (different physical disk on host).
Unfortunately after shutting down and starting from new image, VM is unable
to boot and qrub enters rescue mode displaying following error:
```
error: file '/grub/i386-pc/normal.mod' not found.
Entering rescue mode...
grub rescue>
```
To investigate the problem, I compared both RAW images using linux
"cmp -l" command and found out that they differ in 569028 bytes
starting from address 185598977 to 252708864 which are located on
/boot partition.
So I mounted /boot partition of mirrored RAW image on host OS and it
seems that file-system is broken and grub folder is not recognized.
But /boot on original RAW image has no problem.
Mirrored Image:
ls -l /mnt/vm-boot/
ls: cannot access /mnt/vm-boot/grub: Structure needs cleaning
total 38168
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
d? ? ?? ?? grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
Original Image:
ls /mnt/vm-boot/ -l
total 38173
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
drwxr-xr-x 5 root root 5120 Nov 2 2016 grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
ls /mnt/vm-boot/grub/ -l
total 2376
-rw-r--r-- 1 root root 48 Oct 7 2013 device.map
drwxr-xr-x 2 root root1024 Oct 10 2015 fonts
-r--r--r-- 1 root root9432 Nov 2 2016 grub.cfg
-rw-r--r-- 1 root root1024 Oct 7 2013 grubenv
drwxr-xr-x 2 root root6144 Aug 6 2016 i386-pc
drwxr-xr-x 2 root root1024 Aug 6 2016 locale
-rw-r--r-- 1 root root 2400500 Aug 6 2016 unicode.pf2
qemu Version: 2.7.0-10
Host OS: Debian 8x64
Guest OS: Debian 8x64
QMP Commands log:
socat UNIX-CONNECT:/var/run/qemu-server/48016.qmp STDIO
{"QMP": {"version": {"qemu": {"micro": 0, "minor": 7, "major": 2}, "package":
"pve-qemu-kvm_2.7.0-10"}, "capabilities": []}}
{ "execute": "qmp_capabilities" }
{"return": {}}
{ "execute": "drive-mirror",
"arguments": {
"device": "drive-ide0",
"target": "/diskc/48016/vm-48016-disk-2.raw",
"sync": "full",
"mode": "absolute-paths",
"speed": 0
}
}
{"return": {}}
{"timestamp": {"seconds": 1506331591, "microseconds": 623095}, "event":
"BLOCK_JOB_READY", "data": {"device": "drive-ide0", "len": 269445758976,
"offset": 269445758976, "speed": 0, "type": "mirror"}}
{"timestamp": {"seconds": 1506332641, "microseconds": 245272}, "event":
"SHUTDOWN"}
{"timestamp": {"seconds": 1506332641, "microseconds": 377751}, "event":
"BLOCK_JOB_COMPLETED", "data": {"device": "drive-ide0", "len": 271707340800,
"offset": 271707340800, "speed": 0, "type": "mirror"}}
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1719282/+subscriptions
[Qemu-devel] [Bug 1719282] Re: Unable to boot after drive-mirror
In last try, vm shutdown before completing blockjob.
So i tried again and these are the exact qmp commands which i used:
Sequence of qmp commands:
socat UNIX-CONNECT:/var/run/qemu-server/48016.qmp STDIO
{"QMP": {"version": {"qemu": {"micro": 0, "minor": 7, "major": 2}, "package":
"pve-qemu-kvm_2.7.0-10"}, "capabilities": []}}
{ "execute": "qmp_capabilities" }
{"return": {}}
{ "execute": "drive-mirror",
"arguments": {
"device": "drive-ide0",
"target": "/diskb/48016/vm-48016-disk-1.raw",
"sync": "full",
"mode": "absolute-paths",
"speed": 0
}
}
{"return": {}}
{"timestamp": {"seconds": 1506434603, "microseconds": 633439}, "event":
"BLOCK_JOB_READY", "data": {"device": "drive-ide0", "len": 268479496192,
"offset": 268479496192, "speed": 0, "type": "mirror"}}
{ "execute": 'block-job-complete', 'arguments': { 'device': 'drive-ide0' } }
{"return": {}}
{"timestamp": {"seconds": 1506494590, "microseconds": 735601}, "event":
"BLOCK_JOB_COMPLETED", "data": {"device": "drive-ide0", "len": 278522167296,
"offset": 278522167296, "speed": 0, "type": "mirror"}}
Then i poweroff VM and start it again from new image, but grub starts in
rescue mode.
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1719282
Title:
Unable to boot after drive-mirror
Status in QEMU:
New
Bug description:
Hi,
I am using "drive-mirror" qmp block-job command to transfer VM disk image to
other path (different physical disk on host).
Unfortunately after shutting down and starting from new image, VM is unable
to boot and qrub enters rescue mode displaying following error:
```
error: file '/grub/i386-pc/normal.mod' not found.
Entering rescue mode...
grub rescue>
```
To investigate the problem, I compared both RAW images using linux
"cmp -l" command and found out that they differ in 569028 bytes
starting from address 185598977 to 252708864 which are located on
/boot partition.
So I mounted /boot partition of mirrored RAW image on host OS and it
seems that file-system is broken and grub folder is not recognized.
But /boot on original RAW image has no problem.
Mirrored Image:
ls -l /mnt/vm-boot/
ls: cannot access /mnt/vm-boot/grub: Structure needs cleaning
total 38168
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
d? ? ?? ?? grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
Original Image:
ls /mnt/vm-boot/ -l
total 38173
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
drwxr-xr-x 5 root root 5120 Nov 2 2016 grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
ls /mnt/vm-boot/grub/ -l
total 2376
-rw-r--r-- 1 root root 48 Oct 7 2013 device.map
drwxr-xr-x 2 root root1024 Oct 10 2015 fonts
-r--r--r-- 1 root root9432 Nov 2 2016 grub.cfg
-rw-r--r-- 1 root root1024 Oct 7 2013 grubenv
drwxr-xr-x 2 root root6144 Aug 6 2016 i386-pc
drwxr-xr-x 2 root root1024 Aug 6 2016 locale
-rw-r--r-- 1 root root 2400500 Aug 6 2016 unicode.pf2
qemu Version: 2.7.0-10
Host OS: Debian 8x64
Guest OS: Debian 8x64
QMP Commands log:
socat UNIX-CONNECT:/var/run/qemu-server/48016.qmp STDIO
{"QMP": {"version": {"qemu": {"micro": 0, "minor": 7, "major": 2}, "package":
"pve-qemu-kvm_2.7.0-10"}, "capabilities": []}}
{ "execute": "qmp_capabilities" }
{"return": {}}
{ "execute": "drive-mirror",
"arguments": {
"device": "drive-ide0",
"target": "/diskc/48016/vm-48016-disk-2.raw",
"sync": "full",
"mode": "absolute-paths",
"speed": 0
}
}
{"return": {}}
{"timestamp": {"seconds": 1506331591, "microseconds": 623095}, "event":
"BLOCK_JOB_READY", "data": {"device": "drive-ide0", "len": 269445758976,
"offset": 269445758976, "speed": 0, "type": "mirror"}}
{"timestamp": {"seconds": 1506332641, "microseconds": 245272},
[Qemu-devel] [Bug 1719282] Re: Unable to boot after drive-mirror
Do you have more information on the sequence of commands issued to QEMU?
I see the drive-mirror invocation, but then I don't see what causes the
shutdown or the BLOCK_JOB_COMPLETED event. Usually this is in response
to a user command. I'm wondering if the exact sequence issued is safe.
Do you have a reproducer that I could try on my system to examine the
behavior?
Also, 2.7 is a bit old at this point; do you have the ability to try a
version currently supported by the upstream project? (2.9 or 2.10?)
--
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https://bugs.launchpad.net/bugs/1719282
Title:
Unable to boot after drive-mirror
Status in QEMU:
New
Bug description:
Hi,
I am using "drive-mirror" qmp block-job command to transfer VM disk image to
other path (different physical disk on host).
Unfortunately after shutting down and starting from new image, VM is unable
to boot and qrub enters rescue mode displaying following error:
```
error: file '/grub/i386-pc/normal.mod' not found.
Entering rescue mode...
grub rescue>
```
To investigate the problem, I compared both RAW images using linux
"cmp -l" command and found out that they differ in 569028 bytes
starting from address 185598977 to 252708864 which are located on
/boot partition.
So I mounted /boot partition of mirrored RAW image on host OS and it
seems that file-system is broken and grub folder is not recognized.
But /boot on original RAW image has no problem.
Mirrored Image:
ls -l /mnt/vm-boot/
ls: cannot access /mnt/vm-boot/grub: Structure needs cleaning
total 38168
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
d? ? ?? ?? grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
Original Image:
ls /mnt/vm-boot/ -l
total 38173
-rw-r--r-- 1 root root 157721 Oct 19 2016 config-3.16.0-4-amd64
-rw-r--r-- 1 root root 129281 Sep 20 2015 config-3.2.0-4-amd64
drwxr-xr-x 5 root root 5120 Nov 2 2016 grub
-rw-r--r-- 1 root root 15739360 Nov 2 2016 initrd.img-3.16.0-4-amd64
-rw-r--r-- 1 root root 12115412 Oct 10 2015 initrd.img-3.2.0-4-amd64
drwxr-xr-x 2 root root12288 Oct 7 2013 lost+found
-rw-r--r-- 1 root root 2679264 Oct 19 2016 System.map-3.16.0-4-amd64
-rw-r--r-- 1 root root 2114662 Sep 20 2015 System.map-3.2.0-4-amd64
-rw-r--r-- 1 root root 3126448 Oct 19 2016 vmlinuz-3.16.0-4-amd64
-rw-r--r-- 1 root root 2842592 Sep 20 2015 vmlinuz-3.2.0-4-amd64
ls /mnt/vm-boot/grub/ -l
total 2376
-rw-r--r-- 1 root root 48 Oct 7 2013 device.map
drwxr-xr-x 2 root root1024 Oct 10 2015 fonts
-r--r--r-- 1 root root9432 Nov 2 2016 grub.cfg
-rw-r--r-- 1 root root1024 Oct 7 2013 grubenv
drwxr-xr-x 2 root root6144 Aug 6 2016 i386-pc
drwxr-xr-x 2 root root1024 Aug 6 2016 locale
-rw-r--r-- 1 root root 2400500 Aug 6 2016 unicode.pf2
qemu Version: 2.7.0-10
Host OS: Debian 8x64
Guest OS: Debian 8x64
QMP Commands log:
socat UNIX-CONNECT:/var/run/qemu-server/48016.qmp STDIO
{"QMP": {"version": {"qemu": {"micro": 0, "minor": 7, "major": 2}, "package":
"pve-qemu-kvm_2.7.0-10"}, "capabilities": []}}
{ "execute": "qmp_capabilities" }
{"return": {}}
{ "execute": "drive-mirror",
"arguments": {
"device": "drive-ide0",
"target": "/diskc/48016/vm-48016-disk-2.raw",
"sync": "full",
"mode": "absolute-paths",
"speed": 0
}
}
{"return": {}}
{"timestamp": {"seconds": 1506331591, "microseconds": 623095}, "event":
"BLOCK_JOB_READY", "data": {"device": "drive-ide0", "len": 269445758976,
"offset": 269445758976, "speed": 0, "type": "mirror"}}
{"timestamp": {"seconds": 1506332641, "microseconds": 245272}, "event":
"SHUTDOWN"}
{"timestamp": {"seconds": 1506332641, "microseconds": 377751}, "event":
"BLOCK_JOB_COMPLETED", "data": {"device": "drive-ide0", "len": 271707340800,
"offset": 271707340800, "speed": 0, "type": "mirror"}}
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