Public bug reported:
It looks like no way to force disk size overcommit in utopic.
$ virt-install --noautoconsole --name test --ram 512 --boot hd --disk
pool=default,size=2048,format=qcow2
WARNING KVM acceleration not available, using 'qemu'
WARNING The requested volume capacity will exceed the available pool space
when the volume is fully allocated. (2097152 M requested capacity > 49161 M
available)
ERROR Error: --disk pool=default,size=2048,format=qcow2: There is not enough
free space on the storage pool to create the volume. (2097152 M requested
allocation > 49161 M available)
[with --force and --debug]
$ virt-install --noautoconsole --name test --ram 512 --boot hd --disk
pool=default,size=2048,format=qcow2 --debug --force
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] DEBUG (cli:187) Launched with
command line: /usr/share/virt-manager/virt-install --noautoconsole --name test
--ram 512 --boot hd --disk pool=default,size=2048,format=qcow2 --debug --force
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] DEBUG (cli:195) Requesting
libvirt URI default
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] DEBUG (cli:199) Received libvirt
URI qemu:///system
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] DEBUG (virt-install:193)
Requesting virt method 'default', hv type 'default'.
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] DEBUG (virt-install:432)
Received virt method 'kvm'
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] DEBUG (virt-install:433)
Hypervisor name is 'hvm'
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] DEBUG (diskbackend:172) Path ''
is target for pool 'default'. Creating volume 'test.qcow2'.
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] WARNING (storage:618) The
requested volume capacity will exceed the available pool space when the volume
is fully allocated. (2097152 M requested capacity > 47383 M available)
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] DEBUG (cli:1155) Exception
parsing inst=None optstr=pool=default,size=2048,format=qcow2
Traceback (most recent call last):
File "/usr/share/virt-manager/virtinst/cli.py", line 1141, in parse
devs = self._parse_single_optstr(guest, optstr, optinst)
File "/usr/share/virt-manager/virtinst/cli.py", line 1200, in
_parse_single_optstr
return self._parse(opts, inst)
File "/usr/share/virt-manager/virtinst/cli.py", line 1692, in _parse
self.guest, path, pool, vol, size, fmt, sparse)
File "/usr/share/virt-manager/virtinst/cli.py", line 1596, in
_parse_disk_source
guest.conn, vname, poolobj, size, sparse)
File "/usr/share/virt-manager/virtinst/devicedisk.py", line 447, in
build_vol_install
return diskbackend.build_vol_install(*args, **kwargs)
File "/usr/share/virt-manager/virtinst/diskbackend.py", line 184, in
build_vol_install
volinst.allocation = alloc
File "/usr/share/virt-manager/virtinst/xmlbuilder.py", line 618, in setter
self._validate_cb(xmlbuilder, val)
File "/usr/share/virt-manager/virtinst/storage.py", line 608, in
_validate_allocation
raise ValueError(ret[1])
ValueError: There is not enough free space on the storage pool to create the
volume. (2097152 M requested allocation > 47383 M available)
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] DEBUG (cli:234) File
"/usr/share/virt-manager/virt-install", line 876, in <module>
sys.exit(main())
File "/usr/share/virt-manager/virt-install", line 861, in main
guest = build_guest_instance(conn, options, parsermap)
File "/usr/share/virt-manager/virt-install", line 463, in build_guest_instance
cli.parse_option_strings(parsermap, options, guest, None)
File "/usr/share/virt-manager/virtinst/cli.py", line 2270, in
parse_option_strings
validate=not update)
File "/usr/share/virt-manager/virtinst/cli.py", line 1158, in parse
"options": optstr, "err": str(e)})
File "/usr/share/virt-manager/virtinst/cli.py", line 234, in fail
logging.debug("".join(traceback.format_stack()))
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] ERROR (cli:235) Error: --disk
pool=default,size=2048,format=qcow2: There is not enough free space on the
storage pool to create the volume. (2097152 M requested allocation > 47383 M
available)
[Fri, 08 Aug 2014 12:57:28 virt-install 13258] DEBUG (cli:237)
Traceback (most recent call last):
File "/usr/share/virt-manager/virtinst/cli.py", line 1141, in parse
devs = self._parse_single_optstr(guest, optstr, optinst)
File "/usr/share/virt-manager/virtinst/cli.py", line 1200, in
_parse_single_optstr
return self._parse(opts, inst)
File "/usr/share/virt-manager/virtinst/cli.py", line 1692, in _parse
self.guest, path, pool, vol, size, fmt, sparse)
File "/usr/share/virt-manager/virtinst/cli.py", line 1596, in
_parse_disk_source
guest.conn, vname, poolobj, size, sparse)
File "/usr/share/virt-manager/virtinst/devicedisk.py", line 447, in
build_vol_install
return diskbackend.build_vol_install(*args, **kwargs)
File "/usr/share/virt-manager/virtinst/diskbackend.py", line 184, in
build_vol_install
volinst.allocation = alloc
File "/usr/share/virt-manager/virtinst/xmlbuilder.py", line 618, in setter
self._validate_cb(xmlbuilder, val)
File "/usr/share/virt-manager/virtinst/storage.py", line 608, in
_validate_allocation
raise ValueError(ret[1])
ValueError: There is not enough free space on the storage pool to create the
volume. (2097152 M requested allocation > 47383 M available)
In trusty version, there was a way to overcommit with "--force".
$ virt-install --noautoconsole --name test --ram 512 --boot hd --disk
pool=default,size=2048,format=qcow2
ERROR The requested volume capacity will exceed the available pool space
when the volume is fully allocated. (2097152 M requested capacity > 716
1 M available) (Use --prompt or --force to override)
$ virt-install --noautoconsole --name test --ram 512 --boot hd --disk
pool=default,size=2048,format=qcow2 --force
WARNING The requested volume capacity will exceed the available pool space
when the volume is fully allocated. (2097152 M requested capacity > 7161 M
available)
Starting install...
Allocating 'test.img'
| 2.0 TB 00:00
Creating domain...
| 0 B 00:00
Domain creation completed. You can restart your domain by running:
virsh --connect qemu:///system start test
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: virtinst 1:1.0.1-0ubuntu2
ProcVersionSignature: Ubuntu 3.16.0-6.11-generic 3.16.0-rc7
Uname: Linux 3.16.0-6-generic x86_64
ApportVersion: 2.14.5-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Aug 8 12:49:40 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-05-19 (81 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140518)
PackageArchitecture: all
SourcePackage: virt-manager
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: virt-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug utopic
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https://bugs.launchpad.net/bugs/1354263
Title:
[virt-install] no way to force disk size overcommit
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