FWIW there are some fixes and enhancements coming in btrfs-progs 6.1, now in koji for Rawhide, including making it easier to get info about hibernation file offset in a swapfile.
I haven't messed with the new subcommand, but I personally prefer putting swapfiles in their own subvolume so that I can still snapshot the root subvolume. Snapshotting a subvolume containing a swapfile will render the swapfile invalid for use (or maybe the snapshot fails, not sure, haven't tried recently). The way I do this is mount the top-level of the file system (just do a normal mount without any options), and inside you'll see what appears to be two directories: root and home. Those are the subvolumes the installer creates by default. Create a new subvolume in here and add it to fstab such that: UUID=$fsuuid /var/swap btrfs noatime,subvol=swap 0 0 I use chattr +C on this swap subvolume, that way any new files created inside will inherit. This is something the new subcommand will do for you. An additional entry in fstab: /var/swap/swapfile1 none swap defaults 0 0 You can certainly make a nested /var/swap thereby avoiding the need to create the earlier fstab entry. But note that snapshots still don't have this nested subvolume in them, so if you do a rollback it also won't have the nested swap subvolume or file - thus you boot probably hangs because the fstab is looking for this swapfile to activate and never finds it. So I just do it the way I describe, that way I can more or less forget about it. But an alternative to that, if you really prefer nested, is s/defaults/nofail/ for the swapfile entry and now a missing swap won't cause boot to fail *but* you also may one day forget all this and come to realize that there's no swap activated because you once did a rollback way back when... :D -- Chris Murphy _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
