Chris Murphy wrote: > > On Jan 16, 2014, at 11:21 AM, Neal Becker <ndbeck...@gmail.com> wrote: >> >> I'm talking only about yum-fs-snapshot. > > Yeah I haven't used it. > >> When I run yum it's never going to >> write into /home. But I don't know exactly what this means. > > And when you do a yum update, do you get a snapshot in /home? > >> Notice my /home >> and / root partition are the same physical device (which is fedora's default >> install on btrfs - or at least was when I did the original install). > > Yes. > > >> So I'm guessing yum-fs-snapshot will snapshot everything - since it does >> snapshot or root. Does additional snapshot of /home actually do anything? > > I'm not sure what you mean by additional. What's the first instance? Snapshots > do not recursively snapshot subvolumes. For example: > > 274 5517 5 <FS_TREE>/home.0 > 476 5344 5 <FS_TREE>/home.0/chris/Downloads/git > 488 5352 5 <FS_TREE>/home.0/chris/Downloads/git/kernel > > > If I snapshot ID 274, the resulting subvolume will stop at a directory > ./chris/Downloads/git which will be empty. So it's not going to contain any > reference at all to the subvolumes that were in the original subvolume. > > > Chris Murphy > When running yum update: ... fs-snapshot: snapshotting /: /yum_20140116082354 fs-snapshot: snapshotting /home/: /home/yum_20140116082354
After running a couple of updates: sudo btrfs subvolume list / [sudo] password for nbecker: ID 256 gen 563200 top level 5 path home ID 258 gen 563200 top level 5 path root ID 366 gen 563175 top level 258 path yum_20140116082354 ID 367 gen 563177 top level 5 path home/yum_20140116082354 ID 368 gen 563184 top level 258 path yum_20140116082704 ID 369 gen 563186 top level 5 path home/yum_20140116082704 So I'm thinking it is doing unnecessary snapshotting of /home? -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
