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xen-devel
[Xen-devel] Automatic loopback dev with 'whole disk' stored in file
I am (finally) porting my setup code to use the automatic loopback
disk='file:/blah' stuff rather than setting up the loopback devices myself.
This doesn't seem to work when the file is backing a whole 'device' rather
than just a partition hosting a filesystem? (i.e. the file actually contains
partitions which then hold filesystems)
I get the following error on the command line:
# xm create name=cagnode89 disk=file:/var/xen-grid/cagnode89/fs/vdisk,hda1,w
ip=134.226.53.153 root=/dev/hda2
Using config file "/etc/xen/xmdefconfig".
Error: Error creating domain: [Errno 4] Interrupted system call
and this in xend.log:
[2004-10-28 12:39:52 xend] DEBUG (XendDomainInfo:720) init_domain> Created
domain=9 name=cagnode89 memory=200
[2004-10-28 12:39:52 xend] INFO (console:94) Created console id=12 domain=9
port=9609
[2004-10-28 12:39:52 xend] DEBUG (blkif:115) Connecting blkif
<BlkifBackendInterface 9 0>
[2004-10-28 12:39:52 xend] INFO (XendRoot:91) EVENT> xend.console.create
[12, 9, 9609]
[2004-10-28 12:39:52 xend] DEBUG (XendDomainInfo:1082) Creating vbd dom=9
uname=file:/var/xen-grid/cagnode89/fs/vdisk
[2004-10-28 12:39:52 xend] DEBUG (XendDomainInfo:674) Destroying vbds for
domain 9
[2004-10-28 12:39:52 xend] DEBUG (blkif:501) Destroying blkif domain=9
[2004-10-28 12:39:52 xend] DEBUG (blkif:357) Destroying vbd domain=9 idx=0
[2004-10-28 12:39:52 xend] DEBUG (XendDomainInfo:634) Closing console, domain 9
[2004-10-28 12:39:52 xend] DEBUG (XendDomainInfo:622) Closing channel to
domain 9
If I do the losetup manually and then use phy:loop0 then it still works fine.
Maybe I should move over to using one file per partition as that seems to be
what is being tested most. Is it just me who thinks it's quite nice to have
the whole disk, partitions and all, stored in a single file?
Stephen
--
Dr. Stephen Childs,
Research Fellow, EGEE Project, phone: +353-1-6081797
Computer Architecture Group, email: Stephen.Childs @ cs.tcd.ie
Trinity College Dublin, Ireland web: http://www.cs.tcd.ie/Stephen.Childs
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