On Mon, Sep 27, 2021 at 10:12 PM NeilBrown [off-list ref] wrote:

On Sat, 25 Sep 2021, David Howells wrote:

quoted

Whilst trying to make this work, I found that NFS's support for swapfiles
seems to have been non-functional since Aug 2019 (I think), so the first
patch fixes that.  Question is: do we actually *want* to keep this
functionality, given that it seems that no one's tested it with an upstream
kernel in the last couple of years?

SUSE definitely want to keep this functionality.  We have customers
using it.
I agree it would be good if it was being tested somewhere....

I am trying to work through the testing of swap over SMB3 mounts
since there are use cases where you need to expand the swap
space to remote storage and so this requirement comes up.  The main difficulty
I run into is forgetting to mount with the mount options (to store mode bits)
(so swap file has the right permissions) and debugging some of the
xfstests relating to swap can be a little confusing.

-- 
Thanks,

Steve