On Tue, Aug 12, 2008 at 05:06:38PM -0400, Cole Robinson wrote: > Per Dan's advice, I've changed the previously proposed > virt-install cli options for specifying libvirt managed > storage. > > This patch does not change any possible semantics of > --file or --cdrom: they remain strictly for specifying > local media. In this way they are basically deprecated. > > A new cli option is added: --disk. The format is: > > --disk path:///some/file/path[:device=cdrom|floppy][:permissions=ro|sh] > --disk vol:///poolname/volname[:device=cdrom|floppy][:permissions=ro|sh] > --disk pool:///poolname[:device=cdrom|floppy][:permissions=ro|sh] > > The changes from Dan's proposal are: > > - use of path:/// instead of file:///, since this will > hopefully clear up any confusion users previously had > with specifying block devices. > - For vol:///, I used / as a delimiter vs. ':' between > the pool and vol name, to avoid any extra collisions > (since I assume '/' is not part of a legal pool name). > - Explictly list what type of extra option we are > appending (device, permissions). This adds clarity > to the command line, reduces chance of name collision, > and is similar to the approach used by qemu. > > The --disk option is quite useful even for the local case, > since users can now add cdrom and floppy drives (and eventually > other device types) via the cli. This could also be expanded > to allow specifying file formats (qcow2, etc.) for creating > new storage. > > The other functionality change is that disk:/// can be used > to specify install media. If none of --pxe, --cdrom, or > --location are specified, we look to see if a --disk > device=cdrom was specified, and if so, use that for > installation. We can eventually expand this to allow > installing off floppies. > > One question: Is ':' an appropriate delimiter? qemu typically > uses ',' for these types of cli options. May be an arbitrary > choice, but perhaps someone has an opinion. You could use ',', or we could use full URI syntax vol:///poolname/volname?device=[cdrom|floppy][;permissions=ro|sh] Separating params by a ';' or '&' - the former avoids shell metacharacter expansion 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 :| _______________________________________________ et-mgmt-tools mailing list et-mgmt-tools@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/et-mgmt-tools
