Using the current unstable version, is it possible to add a File-backed virtual block device to a running domain? I''ve setup a partition with several files on them, as described in the manual, which i want to mount in running domains on a as-needed base. Regards, Robin Kluit ------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
The virtual blkdev driver can only talk to block devices. If there was some way of ''mounting'' a file as a block device then you could connect your guest to that block-device node, but I don''t think there''s any way of doing such a mount. Probably the most flexible way of managing guest OS disc volumes is to use LVM2. Then you can create fleible logical volumes on top of one or more real disc partitions (physical volumes) and thereby get the manageability you are looking for. We currently have no integration of our toolset with LVM2, but there''s no reason for you not to set up some logical volumes, and then specify those in your guest-OS configuration files. Better integration is perhaps something we will investigate in future. -- Keir> Using the current unstable version, > > is it possible to add a File-backed virtual block device to a running > domain? > I''ve setup a partition with several files on them, as described in the > manual, which i want to mount in running domains on a as-needed base. > > Regards, Robin Kluit > > > > > ------------------------------------------------------- > SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media > 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 > Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. > http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/xen-devel------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> > The virtual blkdev driver can only talk to block devices. If there was > some way of ''mounting'' a file as a block device then you could connect > your guest to that block-device node, but I don''t think there''s any > way of doing such a mount.Well, if you''ve got the loop device built into your dom0 kernel you can use ''losetup'' to turn files into block device and then export them to other domains. Last month I posted an example of how to create a sparse file with ''dd'' and export it to another domain. However, by the sounds of it you want to be able to dynamically add and remove block devices to domains. This used to work under Xen 1.2, but I''m afraid I think it got broken in the unstable tree and is yet to be fixed. Although xend and backend blk driver supports adding and removing blk devices, there''s no way to tell the frontend driver to refresh its view of what block devices are available. Re-writing and simplifying the blk device control message interface is on the todo list.> Probably the most flexible way of managing guest OS disc volumes is to > use LVM2. Then you can create fleible logical volumes on top of one or > more real disc partitions (physical volumes) and thereby get the > manageability you are looking for. > > We currently have no integration of our toolset with LVM2, but there''s > no reason for you not to set up some logical volumes, and then specify > those in your guest-OS configuration files. Better integration is > perhaps something we will investigate in future.I posted another message earlier in the month that gives example invocations for setting up CoW block devices using LVM2 snapshots. Ian ------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel