I accidentally posted this to Andrei Borzenkov I repost to the list with the first 3 lines added from what was earlier sent.
Regarding to my manual for btrfs-subvolume dated 01/19/2016 it says. "If only <dest> is given, the subvolume will be named the basename of <source>. " So 'btrfs su snap <dest> is a shortcut for 'btrfs su snap <source> <source>/<dest> Ok. If you try to replace line 2 with btrfs su snap is-this-a-bug is-this-a-bug/is-this-a-bug then do the rest of the lines. After that - what is the lines for Source(s) when you execute 'btrfs sub show is-this-a-bug' .? 2016-08-06 11:15 GMT+02:00, Andrei Borzenkov <arvidj...@gmail.com>: > 06.08.2016 11:00, Peter Holm пишет: >> You are right. Typing error. Sorry. >> Here is from my bash_history. >> >> 1 btrfs su create is-this-a-bug >> *2 btrfs su snap is-this-a-bug is-this-a-bug >> *3 btrfs su snap is-this-a-bug /mnt/btrfs/sdc16-svid-5/ >> > > As I said, in my case it fails with "File exists" > >> *2.When snapshot is created with the same name as subvolume, then it >> by default creates in the subdirectory of the subvolume. >> *3. Mountpoint for he root (subvolid=5) volume >> >> Also I in the first post had a link to an photo from my terminal when >> executing thoose commands. >> https://s31.postimg.org/9f0d7xb7f/is_this_a_bug.png >> >> /Peter Holm >> >> >> 2016-08-06 7:14 GMT+02:00, Andrei Borzenkov <arvidj...@gmail.com>: >>> 05.08.2016 02:32, Peter Holm пишет: >>>> 'btrfs subvolumee show' gives no path to btrfs system root (volid=5) >>>> when snapshot is in the folder of subvolume. >>>> >>>> Step to reproduce. >>>> 1.btrfs subvolume create xyz >>>> 2.btrfs subvolume snapshot xyz xyz/xyz >>>> 3.btrfs subvolume snapshot <mountpoint-for-btrfs-root>/xyz >>> >>> This last command is wrong - snapshot name is missing. If you mean >>> >>> btrfs subvolume snapshot <mountpoint-for-btrfs-root> xyz >>> >>> - I get "File exists" (assuming that all previous commands were with >>> <mountpoint-for-ntrfs-root> as current directory. This is on openSUSE >>> Tumbleweed with kernel 4.6.4-2 and btrfsprogs 4.6.1-1. >>> >>> If my assumption is wrong, please copy and paste exact commands used to >>> reproduce it. >>> >>>> 4.btrfs subvolumme show xyz >>>> output >>>> ..... >>>> Snapshot(s) >>>> xyz >>>> xyz >>>> ..... >>>> picture from my console reproducing this. Whatchout for my personal >>>> fs-layout >>>> my mountpoint for volid=5 is - as seen in the findmount command r at >>>> top of the photo /mnt/btrfs/sdc16-svid-5 >>>> https://s31.postimg.org/9f0d7xb7f/is_this_a_bug.png >>>> >>>> If that can add anything, same thing happends when rootvolume is >>>> mounted by path. (for the moment it is mounted by volid). >>>> /Peter Holm >>>> -- >>>> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" >>>> in >>>> the body of a message to majord...@vger.kernel.org >>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>>> >>> >>> > > -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
