[libvirt-users] pre/post vm start commands
Hi there, for development i use a windows vm. which is installed into a disk image. because the compiler generates a lot of temporary files into the user tempdir (C:\\Documents And Users\\User\\Local Settings\\Temp) the vm becomes quite slow after a couple of weeks and i register a lot activity on the disk. so i moved the temp directory to a ram disk and no more problems. but because the ram disk is not formated on startup i need to do this by hand. so i disabled autostart for the vm and do the following: $ sudo mkfs.ntfs -q -L TEMP -I /dev/ram0 $ sudo virsh start windows so the question is, does libvirt provide some kind of pre startup script which is will be executed before the libvirtd does the autostart for the vm. -- Best Regards Soeren
On Wed, Feb 10, 2010 at 06:26:02PM +0100, Soeren Grunewald wrote:
Hi there,
for development i use a windows vm. which is installed into a disk image. because the compiler generates a lot of temporary files into the user tempdir (C:\\Documents And Users\\User\\Local Settings\\Temp) the vm becomes quite slow after a couple of weeks and i register a lot activity on the disk. so i moved the temp directory to a ram disk and no more problems.
but because the ram disk is not formated on startup i need to do this by hand. so i disabled autostart for the vm and do the following:
$ sudo mkfs.ntfs -q -L TEMP -I /dev/ram0 $ sudo virsh start windows
so the question is, does libvirt provide some kind of pre startup script which is will be executed before the libvirtd does the autostart for the vm.
No, there's no explicit hook for that. Given your description of the setup you have, I'm wondering why you don't just format the NTFS partition inside your windows guest as the first step of your build process, or upon Windows startup. Using Windows' native NTFS formatting tool rather than the linux mkfs.ntfs reverse engineered one sounds safer to me anyway Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|
On Thu, Feb 11, 2010 at 11:54:45AM +0000, Daniel P. Berrange wrote:
On Wed, Feb 10, 2010 at 06:26:02PM +0100, Soeren Grunewald wrote:
Hi there,
for development i use a windows vm. which is installed into a disk image. because the compiler generates a lot of temporary files into the user tempdir (C:\\Documents And Users\\User\\Local Settings\\Temp) the vm becomes quite slow after a couple of weeks and i register a lot activity on the disk. so i moved the temp directory to a ram disk and no more problems.
but because the ram disk is not formated on startup i need to do this by hand. so i disabled autostart for the vm and do the following:
$ sudo mkfs.ntfs -q -L TEMP -I /dev/ram0 $ sudo virsh start windows
so the question is, does libvirt provide some kind of pre startup script which is will be executed before the libvirtd does the autostart for the vm.
No, there's no explicit hook for that. Given your description of the setup you have, I'm wondering why you don't just format the NTFS partition inside your windows guest as the first step of your build process, or upon Windows startup. Using Windows' native NTFS formatting tool rather than the linux mkfs.ntfs reverse engineered one sounds safer to me anyway
Oh, or the other option is to just create yourself an initscript in the host which dos the formatting, and configure it to start before the libvirtd initscript Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|
ok, thx i'm afraid thats truly the best way to do it...for me -- Thx again Soeren On 11.02.2010 12:57, Daniel P. Berrange wrote:
On Thu, Feb 11, 2010 at 11:54:45AM +0000, Daniel P. Berrange wrote:
On Wed, Feb 10, 2010 at 06:26:02PM +0100, Soeren Grunewald wrote:
Hi there,
for development i use a windows vm. which is installed into a disk image. because the compiler generates a lot of temporary files into the user tempdir (C:\\Documents And Users\\User\\Local Settings\\Temp) the vm becomes quite slow after a couple of weeks and i register a lot activity on the disk. so i moved the temp directory to a ram disk and no more problems.
but because the ram disk is not formated on startup i need to do this by hand. so i disabled autostart for the vm and do the following:
$ sudo mkfs.ntfs -q -L TEMP -I /dev/ram0 $ sudo virsh start windows
so the question is, does libvirt provide some kind of pre startup script which is will be executed before the libvirtd does the autostart for the vm.
No, there's no explicit hook for that. Given your description of the setup you have, I'm wondering why you don't just format the NTFS partition inside your windows guest as the first step of your build process, or upon Windows startup. Using Windows' native NTFS formatting tool rather than the linux mkfs.ntfs reverse engineered one sounds safer to me anyway
Oh, or the other option is to just create yourself an initscript in the host which dos the formatting, and configure it to start before the libvirtd initscript
Daniel
participants (2)
-
Daniel P. Berrange -
Soeren Grunewald