Ошибка ввода-вывода при попытке создания моментального снимка Btrfs

В Fedora 23 мой / раздел отформатирован как Btrfs :

 /dev/nvme0n1p4 / btrfs rw,seclabel,relatime,ssd,space_cache,subvolid=257,subvol=/root 0 0 

Полная мощность:

 $ sudo cat /proc/mounts sysfs /sys sysfs rw,seclabel,nosuid,nodev,noexec,relatime 0 0 proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0 devtmpfs /dev devtmpfs rw,seclabel,nosuid,size=16402952k,nr_inodes=4100738,mode=755 0 0 securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 0 0 tmpfs /dev/shm tmpfs rw,seclabel,nosuid,nodev 0 0 devpts /dev/pts devpts rw,seclabel,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 tmpfs /run tmpfs rw,seclabel,nosuid,nodev,mode=755 0 0 tmpfs /sys/fs/cgroup tmpfs ro,seclabel,nosuid,nodev,noexec,mode=755 0 0 cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd 0 0 pstore /sys/fs/pstore pstore rw,seclabel,nosuid,nodev,noexec,relatime 0 0 efivarfs /sys/firmware/efi/efivars efivarfs rw,nosuid,nodev,noexec,relatime 0 0 cgroup /sys/fs/cgroup/perf_event cgroup rw,nosuid,nodev,noexec,relatime,perf_event 0 0 cgroup /sys/fs/cgroup/net_cls,net_prio cgroup rw,nosuid,nodev,noexec,relatime,net_cls,net_prio 0 0 cgroup /sys/fs/cgroup/hugetlb cgroup rw,nosuid,nodev,noexec,relatime,hugetlb 0 0 cgroup /sys/fs/cgroup/pids cgroup rw,nosuid,nodev,noexec,relatime,pids 0 0 cgroup /sys/fs/cgroup/cpu,cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpu,cpuacct 0 0 cgroup /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices 0 0 cgroup /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0 cgroup /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset 0 0 cgroup /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0 cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0 configfs /sys/kernel/config configfs rw,relatime 0 0 /dev/nvme0n1p4 / btrfs rw,seclabel,relatime,ssd,space_cache,subvolid=257,subvol=/root 0 0 selinuxfs /sys/fs/selinux selinuxfs rw,relatime 0 0 systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=34,pgrp=1,timeout=0,minproto=5,maxproto=5,direct 0 0 hugetlbfs /dev/hugepages hugetlbfs rw,seclabel,relatime 0 0 debugfs /sys/kernel/debug debugfs rw,seclabel,relatime 0 0 tmpfs /tmp tmpfs rw,seclabel 0 0 mqueue /dev/mqueue mqueue rw,seclabel,relatime 0 0 nfsd /proc/fs/nfsd nfsd rw,relatime 0 0 /dev/sda1 /mnt/backup btrfs rw,seclabel,nosuid,nodev,relatime,ssd,space_cache,subvolid=5,subvol=/ 0 0 /dev/nvme0n1p2 /boot ext4 rw,seclabel,relatime,data=ordered 0 0 /dev/nvme0n1p4 /home btrfs rw,seclabel,relatime,ssd,space_cache,subvolid=258,subvol=/home 0 0 /dev/nvme0n1p1 /boot/efi vfat rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=winnt,errors=remount-ro 0 0 sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0 tmpfs /run/user/42 tmpfs rw,seclabel,nosuid,nodev,relatime,size=3282696k,mode=700,uid=42,gid=42 0 0 tmpfs /run/user/1000 tmpfs rw,seclabel,nosuid,nodev,relatime,size=3282696k,mode=700,uid=1000,gid=1000 0 0 gvfsd-fuse /run/user/1000/gvfs fuse.gvfsd-fuse rw,nosuid,nodev,relatime,user_id=1000,group_id=1000 0 0 fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0 

Я создал конфигурацию Btrfs для / :

 $ sudo cat /etc/snapper/configs/root [sudo] password for behrangsa: # subvolume to snapshot SUBVOLUME="/" # filesystem type FSTYPE="btrfs" # users and groups allowed to work with config ALLOW_USERS="" ALLOW_GROUPS="" # sync users and groups from ALLOW_USERS and ALLOW_GROUPS to .snapshots # directory SYNC_ACL="no" # start comparing pre- and post-snapshot in background after creating # post-snapshot BACKGROUND_COMPARISON="yes" # run daily number cleanup NUMBER_CLEANUP="yes" # limit for number cleanup NUMBER_MIN_AGE="1800" NUMBER_LIMIT="50" NUMBER_LIMIT_IMPORTANT="10" # create hourly snapshots TIMELINE_CREATE="yes" # cleanup hourly snapshots after some time TIMELINE_CLEANUP="yes" # limits for timeline cleanup TIMELINE_MIN_AGE="1800" TIMELINE_LIMIT_HOURLY="10" TIMELINE_LIMIT_DAILY="10" TIMELINE_LIMIT_WEEKLY="0" TIMELINE_LIMIT_MONTHLY="10" TIMELINE_LIMIT_YEARLY="10" # cleanup empty pre-post-pairs EMPTY_PRE_POST_CLEANUP="yes" # limits for empty pre-post-pair cleanup EMPTY_PRE_POST_MIN_AGE="1800" 

Но я получаю IO Error когда пытаюсь создать простой снимок:

 $ sudo snapper -v -c root create --description "pre-24" IO Error. 

В /var/log/snapper.log я вижу эти ошибки:

 2016-06-24 00:20:56 ERR libsnapper(27862) FileUtils.cc(SDir):89 - open failed path://.snapshots/1 (No such file or directory) 2016-06-24 00:20:56 ERR libsnapper(27862) Snapshot.cc(nextNumber):392 - mkdir failed errno:13 (Permission denied) 

Однако я думаю, что у /.snapshots есть соответствующие разрешения:

 $ ls -alh | grep snapshots drwxr-xr-x. 1 root behrangsa 0 Jun 23 23:56 .snapshots 

Любые идеи, которые могут вызвать эту проблему, и как я могу ее исправить и создать снимок?

EDIT: Даже после преобразования /.snapshots в /.snapshots , я все еще получаю IO Error :

Я преобразовал его в subvolume, но я все еще получаю IE Error :

 $ sudo btrfs subvolume list / ID 257 gen 189002 top level 5 path root ID 258 gen 189002 top level 5 path home ID 516 gen 180550 top level 257 path var/lib/docker/btrfs/subvolumes/6de108471b3235a2a0d43289792ee8c0699f9538bf462406364f5d7d831111a6 ID 517 gen 180551 top level 257 path var/lib/docker/btrfs/subvolumes/6fd8e83c74afd25dc02862d1effd9a5a00fa26891e636d4e2b06fc3e104ea430-init ID 518 gen 180552 top level 257 path var/lib/docker/btrfs/subvolumes/6fd8e83c74afd25dc02862d1effd9a5a00fa26891e636d4e2b06fc3e104ea430 ID 546 gen 180798 top level 257 path var/lib/docker/btrfs/subvolumes/31bdd669f045dbd3608211199575aa79eaa7c482f38b14829513e0637b29cb13 ID 547 gen 180799 top level 257 path var/lib/docker/btrfs/subvolumes/7122e49c0cc2638fc9a0c32deaf1631b25602a31a9c37e0e11497b99cdacf162 ID 548 gen 180800 top level 257 path var/lib/docker/btrfs/subvolumes/5a9cd4d33f3dc9032be3a851800a1ceb85398182d40de4c902b336cb1ae4f025 ID 549 gen 180801 top level 257 path var/lib/docker/btrfs/subvolumes/6c85c0e0e108cecc077fc69c93743bf9b3c43ebc24272d44bc30dedccdad1182 ID 550 gen 180802 top level 257 path var/lib/docker/btrfs/subvolumes/2f2866590451e437b1ed94aed9b18a14faf0191dc64bde078462c5f6bbdce395 ID 551 gen 180803 top level 257 path var/lib/docker/btrfs/subvolumes/53e56ab23cbbaa86ede63ae1e2573a9601e3ad65bb5072b28b29d9406697e61d ID 552 gen 180804 top level 257 path var/lib/docker/btrfs/subvolumes/38e706084f7c2e8651f8fd422b84cf26b221035fc03d32fa624881712120d166 ID 553 gen 180805 top level 257 path var/lib/docker/btrfs/subvolumes/b29cbc5c0fb503627c2fef76738970fc12139216aeb553ba5802be3cac8c6fcc ID 554 gen 180806 top level 257 path var/lib/docker/btrfs/subvolumes/12decf5df853e912b54465f91b31b544f33f06105996c57a3ef36779ef127513 ID 555 gen 180807 top level 257 path var/lib/docker/btrfs/subvolumes/466c038802ff0d51770280246ab0478208351e0dcc744446892e6f9a01421169 ID 556 gen 180808 top level 257 path var/lib/docker/btrfs/subvolumes/3995a62b383ed204fd47ea4c8519783f34e9840821b477c74afd3210fc10f7f5 ID 557 gen 180809 top level 257 path var/lib/docker/btrfs/subvolumes/d4e10096f7fb505ef5bd8c188e0cd6775229a2b26a0df9a4fbb03559c4596ab4 ID 558 gen 180810 top level 257 path var/lib/docker/btrfs/subvolumes/7fbf4f7d789727c13d546b1856f733b4c3b57da938db66ee70499ec5aff9bb63 ID 559 gen 180811 top level 257 path var/lib/docker/btrfs/subvolumes/b7dce5871ff302505de72e13c44f76b3ec89c6a856d7afabffb027aa25c6768a ID 560 gen 180812 top level 257 path var/lib/docker/btrfs/subvolumes/9f17db87172b4c93963550d1f7633ef91f29a606d0344229aa6ae4a397c7146a ID 561 gen 180813 top level 257 path var/lib/docker/btrfs/subvolumes/dc04ce95b58c52e145b8e800966ac5c28931078e020cc8f82f8eae4de3130654 ID 562 gen 180814 top level 257 path var/lib/docker/btrfs/subvolumes/2b0d518c3ecfc873b3e3c97b74721014382ad618e0294b22e2c13da49c70eeac ID 563 gen 180815 top level 257 path var/lib/docker/btrfs/subvolumes/efba740afd7027e9c951f071423c0fe6d4fd6e69761f6a0c7ae69e9d7cf6f20e ID 564 gen 181136 top level 257 path var/lib/docker/btrfs/subvolumes/f59e52d2ec4956b2515247e152ffe8aa09977acbdc0e4c5b792b1bb7b9be9af6 ID 570 gen 181137 top level 257 path var/lib/docker/btrfs/subvolumes/fda2a6dae9c73ca75f88d94f93193f0ad8b6e17f6035717275a1afdfd32ac2d6-init ID 571 gen 186492 top level 257 path var/lib/docker/btrfs/subvolumes/fda2a6dae9c73ca75f88d94f93193f0ad8b6e17f6035717275a1afdfd32ac2d6 ID 583 gen 188997 top level 257 path .snapshots $ ls -alh | grep snapshots drwxr-xr-x. 1 root behrangsa 0 Jun 24 09:15 .snapshots $ sudo snapper -v -c root create --description "pre-24" IO Error. $ sudo cat /var/log/snapper.log 2016-06-24 09:20:21 MIL libsnapper(25125) Snapshot.cc(read):223 - found 1 snapshots 2016-06-24 09:20:21 ERR libsnapper(25125) FileUtils.cc(SDir):89 - open failed path://.snapshots/1 (No such file or directory) 2016-06-24 09:20:21 ERR libsnapper(25125) Snapshot.cc(nextNumber):392 - mkdir failed errno:13 (Permission denied) 2016-06-24 09:20:51 MIL libsnapper(25125) Snapper.cc(~Snapper):114 - Snapper destructor 2016-06-24 09:21:21 MIL libsnapper(25125) snapperd.cc(main):282 - Exiting 

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