14.06.2025 19:24, Miod Vallat пишет:
>> I have not seen any actual error or explanation as to what goes wrong,
>> thus I don't understand where this is coming from.
> 
> Maybe you should have read the first message from this thread, to begin
> with? NFS mounts are not available during upgrade, therefore if you
> don't use the -b option to select something different than
> /home/_sysupgrade and /home is mounted on NFS, the upgrade fails.

It reads

|I triend to use sysupgrade on a cluster where /home is mounted over NFS.
|It didn't work. I think it might be possible to write a hints file to
|make it work, but it is brittle.
|
|In the mean time, the following patch appears to stop it right in its
|track before wasting time downloading files to NFS.

from which I cannot deduce what "didn't work."