On Wed, Aug 25, 2021 at 9:49 PM Tjernlund <tjernlund@xxxxxxxxxxxx> wrote: > > We got an old netapp server which exposes CIFS vers=1 and when trying to mount shares > from this netapp we get: > CIFS: VFS: \\netapp2 Dialect not supported by server. Consider specifying vers=1.0 or vers=2.0 on mount for accessing older servers > CIFS: VFS: cifs_mount failed w/return code = -95 > > If I specify vers=1 manually on the mount cmd it works. > However, GUI file managers cannot handle this and less Linux savy users don't know how to > use the mount cmd manually. > > I wonder if kernel could grow a SMB1 version negotiate so a standard CIFS mount can work? > We are at kernel 5.13 and I can test/use a kernel patch. I don't think we can do that in the client. We are all trying to move away from SMB1, and a lot of servers already today have it either disabled by default or even removed from the compile. So enabling automatic multi-protocol support for SMB1 is the wrong direction for us. For that reason I think there will also be pushback from GUI filemanagers to add a "smb1 tickbox", but you can try. Other solutions could be to locally hack and replace mount.cifs with a patch to "detect if servername matches the old netapp and automatically add a vers=1 to the mount argument string passed to the kernel". It would require you to build a patched version of cifs-utils and distribute to all the client machines though, so ... > > Jocke > >
