Dominik, Thank you for the insight. There is certainly complexity I did not consider, even if I were to look at the narrow case of local ZFS storage. Regardless, this would be helpful to me and if I make anything then I will submit it. I already have signed the CLA and have code accepted in pve-zsync. Thank you, Bruce
On Mon, Apr 19, 2021 at 2:55 AM Dominik Csapak <d.csa...@proxmox.com> wrote: > On 4/16/21 22:18, Bruce Wainer wrote: > > Hello, > > > > Hi, > > > I am interested in seeing real disk usage information for VM Disks and CT > > Volumes, on storage types that have thin provisioning and/or snapshots. > > Specifically I would like to see "Current Disk Usage (Thin)" and either > > "Snapshot Usage" or "Total Disk Usage". I only use local ZFS on servers > at > > this time, but I'm sure the GUI side would be best made flexible. > > while this sounds sensible, this will get hard very fast. > For example, take a LVM-Thin storage. > > I have a template which has an LV which uses some space. > This can have X linked clones, where each clone can have Y snapshots. > > since lvmthin lvs/snapshots/etc. are only very loosely coupled. > It is very hard to attribute the correct number to any > of those vms/templates. (e.g. do you want to calculate the > template storage again for each vm? only once? what if > you cloned a vm from a snapshot?) > > It gets even harder on storage that can deduplicate (e.g. ZFS) or > where the 'real' usage is dynamically inflated by some form of replica > (e.g. Ceph). > > So, while this sounds nice, and we would probably not oppose a clean > solution, this is not a trivial problem to solve. > > > > > Is someone interested in helping with this? Where would I start, > especially > > on the GUI part, if I were to develop this myself? > > anyway, to answer this question, the storage plugins in the backend can > be found in the pve-storage git repo[0] > > the point where the status api calls of the vms/cts are called live > in qemu-server[1] and pve-container[2] respectively > (the api part is in PVE/API2/) > > you can find the gui part in pve-manger[3] in www/manager6 > > also if you want to send patches, please read the developer > documentation [4] especially the bit about the CLA > > if you have any more question, please ask :) > > hope this helps > kind regards > > 0: > > https://git.proxmox.com/?p=pve-storage.git;a=tree;f=PVE/Storage;h=fd53af5e74407deda65785b164fb61a4f644a6e0;hb=refs/heads/master > 1: https://git.proxmox.com/?p=qemu-server.git;a=summary > 2: https://git.proxmox.com/?p=pve-container.git;a=summary > 3: > > https://git.proxmox.com/?p=pve-manager.git;a=tree;f=www/manager6;hb=refs/heads/master > 4: https://pve.proxmox.com/wiki/Developer_Documentation > > > > > Thank you, > > Bruce Wainer > > _______________________________________________ > > pve-devel mailing list > > pve-devel@lists.proxmox.com > > https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel > > > > > > > _______________________________________________ pve-devel mailing list pve-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
