----- Le 8 Oct 19, à 12:28, Thomas Lamprecht t.lampre...@proxmox.com a écrit :
> > Thanks for the nice write up and clear reproducer! > > It seems that if we cannot use the same backend for all disks we need to > die when a disk move to a storage backend is request, and that move would > need to change the scsi "backend". > As I'd not like to die it would be better to see if there's still the need > for different backends. Dying wouldn't be very nice indeed (I need to be able to move disks between NFS and ZFS over iSCSI on a regular basis) If scsi-hd was always selected, there would be no issue. I've patched my QemuServer.pm to do that for now. Not sure if scsi-generic/scsi-block has any advantages, but I couldn't measure performance diff in my case. unmap is also passed correctly with scsi-hd. IMHO, unless there are strong values with them (which I'am unaware off, but I couldn't find any documentation about all those backends), we should always use scsi-hd, as it's working with all storage types and allows live disk move from any storage type to any other, including the issue I have specific to ZFS over iSCSI (guest I/O error during live move from ZFS over iSCSI to something else) ++ -- [ https://www.firewall-services.com/ ] Daniel Berteaud FIREWALL-SERVICES SAS, La sécurité des réseaux Société de Services en Logiciels Libres Tél : +33.5 56 64 15 32 Matrix: @dani:fws.fr [ https://www.firewall-services.com/ | https://www.firewall-services.com ] _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
