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sundaju

2009-Jan-20 14:12 UTC

[Xen-users] Adding disk image file to existing DomU VM

How can we add a new disk image file to an existing DomU virtual machine
which is already configured and running?

We already have the VM running with 20GB partition mapped to a disk image
file.

We have created a new disk image file of 150GB size and we want this file to
be available as another file system on the DomU host.

Please advise.

Sundar
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Kristofer

2009-Jan-29 23:27 UTC

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RE: [Xen-users] Adding disk image file to existing DomU VM

You can use "xm block-attach".

xm block-attach <Domain> <BackDev> <FrontDev> <Mode>

That will hot-add it to a running domU so you don''t need to restart it.

You will also need to add it to your config file for the domain so it is
attached upon the next boot of the domU.

-----Original Message-----
From: xen-users-bounces@lists.xensource.com
[mailto:xen-users-bounces@lists.xensource.com] On Behalf Of sundaju
Sent: Tuesday, January 20, 2009 8:13 AM
To: xen-users@lists.xensource.com
Subject: [Xen-users] Adding disk image file to existing DomU VM


How can we add a new disk image file to an existing DomU virtual machine
which is already configured and running?

We already have the VM running with 20GB partition mapped to a disk image
file.

We have created a new disk image file of 150GB size and we want this file
to
be available as another file system on the DomU host.

Please advise.

Sundar
-- 
View this message in context:
http://www.nabble.com/Adding-disk-image-file-to-existing-DomU-VM-tp2156381
4p21563814.html
Sent from the Xen - User mailing list archive at Nabble.com.


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sundaju

2009-Feb-06 04:36 UTC

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RE: [Xen-users] Adding disk image file to existing DomU VM

Thank you Kristofer for your suggestions.

I tried out the same and the following is the outcome...


01HW159658:~ # xm block-list 1
Vdev  BE handle state evt-ch ring-ref BE-path
768    0    0     4      10     522   /local/domain/0/backend/vbd/1/768

01HW159658:~ # xm block-attach 1 tap:aio:/etc/xen/vmpartitions/addon1
/dev/xvda3 w 0
Error: Device 51715 (vbd) could not be connected. Hotplug scripts not
working.

01HW159658:~ # xm block-list 1
Vdev  BE handle state evt-ch ring-ref BE-path
768    0    0     4      10     522   /local/domain/0/backend/vbd/1/768
51715    0    0     3      11     686   /local/domain/0/backend/vbd/1/51715

xen-hotplug.log
*****************************************************************
export
PATH=/sbin:/bin:/usr/bin:/usr/sbin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:.
+++
PATH=/sbin:/bin:/usr/bin:/usr/sbin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:.
+++ export LANG=POSIX
+++ LANG=POSIX
++++ set
++++ grep ''^LC_''
++++ cut -d= -f1
+++ unset
+++ trap sigerr ERR
+++ log debug add XENBUS_PATH=backend/vbd/1/51715
+++ local level=debug
+++ shift
+++ logger -p daemon.debug -- /etc/xen/scripts/block: add
XENBUS_PATH=backend/vbd/1/51715
++ findCommand add
++ for arg in ''"$@"''
++ expr index add ++ command=add
++ return
++ ''['' add ''!='' add '']''
++ XENBUS_PATH=backend/vbd/1/51715
++ xenstore_read_default backend/vbd/1/51715/type MISSING
++ xenstore-read backend/vbd/1/51715/type
+ t=tap
+ case "$command" in
++ xenstore_read_default backend/vbd/1/51715/physical-device MISSING
++ xenstore-read backend/vbd/1/51715/physical-device
++ echo MISSING
+ phys=MISSING
+ ''['' MISSING ''!='' MISSING
'']''
++ xenstore_read backend/vbd/1/51715/params
+++ xenstore-read backend/vbd/1/51715/params
++ local v=aio:/etc/xen/vmpartitions/addon1
++ ''['' aio:/etc/xen/vmpartitions/addon1 ''!=''
'''' '']''
++ echo aio:/etc/xen/vmpartitions/addon1
+ p=aio:/etc/xen/vmpartitions/addon1
++ xenstore_read backend/vbd/1/51715/mode
+++ xenstore-read backend/vbd/1/51715/mode
++ local v=w
++ ''['' w ''!='' ''''
'']''
++ echo w
+ mode=w
+ case $t in
+ ''['' -x /etc/xen/scripts/block-tap '']''

*****************************************************************

xend.log
*****************************************************************

[2009-02-02 13:19:39 xend] DEBUG (DevController:103) DevController: writing
{''virtual-device'': ''768'',
''backend-id'': ''0'',
''state'': ''1'', ''backend'':
''/local/domain/0/backend/vbd/1/768''} to
/local/domain/1/device/vbd/768.
[2009-02-02 13:19:39 xend] DEBUG (DevController:105) DevController: writing
{''domain'': ''SAP'',
''frontend'':
''/local/domain/1/device/vbd/768'', ''dev'':
''hda'', ''state'': ''1'',
''params'': ''/var/lib/xen/images/SAP/hda'',
''mode'': ''w'',
''frontend-id'': ''1'',
''type'': ''file''} to
/local/domain/0/backend/vbd/1/768.
[2009-02-02 13:19:39 xend] DEBUG (DevController:103) DevController: writing
{''backend-id'': ''0'', ''mac'':
''00:16:3e:51:a0:cf'', ''handle'':
''0'', ''state'': ''1'',
''backend'':
''/local/domain/0/backend/vif/1/0''} to
/local/domain/1/device/vif/0.
[2009-02-02 13:19:39 xend] DEBUG (DevController:105) DevController: writing
{''mac'': ''00:16:3e:51:a0:cf'',
''state'': ''1'', ''handle'':
''0'', ''script'':
''/etc/xen/scripts/vif-bridge'',
''frontend-id'': ''1'',
''domain'': ''SAP'',
''frontend'': ''/local/domain/1/device/vif/0''}
to
/local/domain/0/backend/vif/1/0.
[2009-02-02 13:19:39 xend.XendDomainInfo] DEBUG (XendDomainInfo:675) Storing
VM details: {''ssidref'': ''0'',
''uuid'':
''2216fc15-99ea-a6d3-ad81-718f235a0c7b'',
''on_reboot'': ''restart'',
''start_time'': ''1233580779.23'',
''on_poweroff'':
''destroy'', ''name'': ''SAP'',
''vcpus'': ''2'',
''vcpu_avail'': ''3'',
''memory'': ''4096'',
''on_crash'': ''restart'',
''image'': "(linux (kernel
/var/lib/xen/tmp/vmlinuz.ZN3UHb) (ramdisk /var/lib/xen/tmp/initrd.C0B5Dk)
(vcpus 2) (args '' TERM=xterm''))",
''maxmem'': ''4096''}
[2009-02-02 13:19:39 xend.XendDomainInfo] DEBUG (XendDomainInfo:700) Storing
domain details: {''console/ring-ref'':
''1665189'', ''console/port'':
''2'', ''name'':
''SAP'', ''console/limit'':
''1048576'', ''vm'':
''/vm/2216fc15-99ea-a6d3-ad81-718f235a0c7b'',
''domid'': ''1'',
''cpu/0/availability'': ''online'',
''memory/target'': ''4194304'',
''store/ring-ref'': ''1665190'',
''cpu/1/availability'': ''online'',
''store/port'':
''1''}
[2009-02-02 13:19:39 xend] DEBUG (DevController:132) Waiting for devices
vif.
[2009-02-02 13:19:39 xend] DEBUG (DevController:138) Waiting for 0.
[2009-02-02 13:19:39 xend.XendDomainInfo] DEBUG (XendDomainInfo:881)
XendDomainInfo.handleShutdownWatch
[2009-02-02 13:19:39 xend] DEBUG (DevController:403) hotplugStatusCallback
/local/domain/0/backend/vif/1/0/hotplug-status.
[2009-02-02 13:19:39 xend] DEBUG (DevController:403) hotplugStatusCallback
/local/domain/0/backend/vif/1/0/hotplug-status.
[2009-02-02 13:19:39 xend] DEBUG (DevController:417) hotplugStatusCallback
1.
[2009-02-02 13:19:39 xend] DEBUG (DevController:132) Waiting for devices
usb.
[2009-02-02 13:19:39 xend] DEBUG (DevController:132) Waiting for devices
vbd.
[2009-02-02 13:19:39 xend] DEBUG (DevController:138) Waiting for 768.
[2009-02-02 13:19:39 xend] DEBUG (DevController:403) hotplugStatusCallback
/local/domain/0/backend/vbd/1/768/hotplug-status.
[2009-02-02 13:19:39 xend] DEBUG (DevController:417) hotplugStatusCallback
1.
[2009-02-02 13:19:39 xend] DEBUG (DevController:132) Waiting for devices
irq.
[2009-02-02 13:19:39 xend] DEBUG (DevController:132) Waiting for devices
pci.
[2009-02-02 13:19:39 xend] DEBUG (DevController:132) Waiting for devices
ioports.
[2009-02-02 13:19:39 xend] DEBUG (DevController:132) Waiting for devices
vtpm.
[2009-02-02 13:19:39 xend] INFO (XendDomain:363) Domain SAP (1) unpaused.
[2009-02-03 11:25:24 xend] DEBUG (blkif:24) exception looking up device
number for /dev/xvda3: [Errno 2] No such file or directory:
''/dev/xvda3''
[2009-02-03 11:25:24 xend] DEBUG (DevController:103) DevController: writing
{''virtual-device'': ''51715'',
''backend-id'': ''0'',
''state'': ''1'', ''backend'':
''/local/domain/0/backend/vbd/1/51715''} to
/local/domain/1/device/vbd/51715.
[2009-02-03 11:25:24 xend] DEBUG (DevController:105) DevController: writing
{''domain'': ''SAP'',
''frontend'':
''/local/domain/1/device/vbd/51715'', ''dev'':
''/dev/xvda3'', ''state'':
''1'', ''params'':
''aio:/etc/xen/vmpartitions/addon1'',
''mode'': ''w'',
''frontend-id'': ''1'',
''type'': ''tap''} to
/local/domain/0/backend/vbd/1/51715.
[2009-02-03 11:25:24 xend] DEBUG (DevController:138) Waiting for 51715.
[2009-02-03 11:25:24 xend] DEBUG (DevController:403) hotplugStatusCallback
/local/domain/0/backend/vbd/1/51715/hotplug-status.







Kristofer-3 wrote:> 
> You can use "xm block-attach".
> 
> xm block-attach <Domain> <BackDev> <FrontDev>
<Mode>
> 
> That will hot-add it to a running domU so you don''t need to
restart it.
> 
> You will also need to add it to your config file for the domain so it is
> attached upon the next boot of the domU.
> 
> -----Original Message-----
> From: xen-users-bounces@lists.xensource.com
> [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of sundaju
> Sent: Tuesday, January 20, 2009 8:13 AM
> To: xen-users@lists.xensource.com
> Subject: [Xen-users] Adding disk image file to existing DomU VM
> 
> 
> How can we add a new disk image file to an existing DomU virtual machine
> which is already configured and running?
> 
> We already have the VM running with 20GB partition mapped to a disk image
> file.
> 
> We have created a new disk image file of 150GB size and we want this file
> to
> be available as another file system on the DomU host.
> 
> Please advise.
> 
> Sundar
> -- 
> View this message in context:
> http://www.nabble.com/Adding-disk-image-file-to-existing-DomU-VM-tp2156381
> 4p21563814.html
> Sent from the Xen - User mailing list archive at Nabble.com.
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
> 
> 
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Xen users - Jan 2009 - Adding disk image file to existing DomU VM

[Xen-users] Adding disk image file to existing DomU VM

RE: [Xen-users] Adding disk image file to existing DomU VM

RE: [Xen-users] Adding disk image file to existing DomU VM