Re: [Kimchi-devel] A question about iSCSI storage pool

I tried it again today and found below: 1. I can create 2 templates with the same volume of iSCSI storage pool. 2. I can create 2 guests with the same template configured against a volume of iSCSI storage pool. I think both the design and implementation have problems 1. For template, as it need to be used to create multiple guests, resources there must be collection like network/storage pool, should not be a volume. 2. As volume need to support both read/write, we need to avoid 2 guests use the same volume as boot disk. Recommended design: 1. In template, when edit, only list storage pool, remove iscsi pool volumes there. 2. When create guest, once user selected the template, if it is iscsi, add a section with a dropdown list for user to select volume, for volume already in use, filter them out. On 9/19/2014 10:48 AM, Aline Manera wrote: > > On 09/18/2014 08:07 AM, Yu Xin Huo wrote: >> I got a iSCSI target to work on my redhat with a USB disk to test >> iSCSI storage pool and found below: >> >> 1. When create a iSCSI storage pool, I selected a target in dropdown >> list. >> 2. Once the pool is created, I see a volume named 'unit:0:0:1'. >> 3. When edit template, in the 'storage pool' dropdown, 'unit:0:0:1' >> is listed there. >> >> So 'unit:0:0:1' which indeed is a *volume* but listed as a *pool* in >> template? or something I am misunderstanding? > > The "Storage pool" on Template represents where the guest disk will > be created. > So if I specify "default" pool and size 10GB my guest will have a > 10GB disk created on the default pool (under /var/lib/libvirt/images, > for example) > > But it is not true for iSCSI and SCSI pools. > We call the iSCSI and SCSI pools as read-only because we can not > create new files on it. > The volumes are pre-configured by the system. Because that while > using those pools you also need to select the volume as are > represented by <pool_name>/<vol_name> in the combo box. > > When a iSCSI or SCSI pool/volume is selected on Template the user can > not edit its size, as the volume already exists and has a size. > _______________________________________________ Kimchi-devel mailing list Kimchi-devel(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/kimchi-devel