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Mystery undeletable directory


Permissions for FTP directory: Inherit directory ownerUnable to change permissions of file system rootResetting user directory permissions etcHow to delete this undeletable directory?Mounted volume name in terminal is different from in GUIHow can I set a folder undeletable but have R/W permissions to it's contentHide directory listing? chmod 730 /home/share?How to make files unmodifiable and undeletable without `chattr`?Etcd executable gets permission denied as rootHow to make files undeletable but moveable in linux server?






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}







1















The directory won't delete.



gentooserver ~ # rmdir /ceph
rmdir: failed to remove '/ceph': Operation not permitted


I am root.



gentooserver ~ # whoami
root


The directory is owned by root and I have permission to write to it.



gentooserver ~ # ls -la /ceph
total 16
drwxrwx--x 1 root root 0 Jan 11 2018 .
drwxr-xr-x 1 root root 176 Sep 28 16:51 ..


There are no attributes set on the directory.



gentooserver ~ # lsattr -d /ceph
------------------ /ceph


No processes are using the directory.



gentooserver ~ # fuser /ceph


Nothing is mounted there.



gentooserver ~ # umount /ceph
umount: /ceph: not mounted.


SELinux disabled. Mount command:



gentooserver ~ # mount
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
none on /run type tmpfs (rw,nosuid,nodev,relatime,mode=755)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=10240k,nr_inodes=2039250,mode=755)
devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
/dev/sda3 on / type btrfs (rw,relatime,lazytime,compress=lzo,ssd,discard,space_cache,subvolid=5,subvol=/)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime)
bpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=28,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=1717)
mqueue on /dev/mqueue type mqueue (rw,relatime)
configfs on /sys/kernel/config type configfs (rw,relatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
nfsd on /proc/fs/nfsd type nfsd (rw,relatime)
/dev/sda2 on /boot type vfat (rw,relatime,lazytime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/sdf on /mnt/store type btrfs (rw,noatime,space_cache,autodefrag,subvolid=5,subvol=/)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=1632152k,mode=700,uid=1000,gid=1000)









share|improve this question



























  • Is there anything holding a file handle open within that directory? lsof | grep '/ceph'.

    – DopeGhoti
    Sep 28 '18 at 22:53











  • No. gentooserver ~ # lsof | grep '/ceph'

    – Gooberpatrol66
    Sep 28 '18 at 22:55











  • Is the filesystem readonly?

    – DopeGhoti
    Sep 28 '18 at 22:57











  • No. gentooserver ~ # mkdir ~/test gentooserver ~ # ls ~ auth filenames.bak nano restore test

    – Gooberpatrol66
    Sep 28 '18 at 23:11











  • What about SELinux? Also, can you post the entire output of mount?

    – Joseph Sible
    Sep 28 '18 at 23:46


















1















The directory won't delete.



gentooserver ~ # rmdir /ceph
rmdir: failed to remove '/ceph': Operation not permitted


I am root.



gentooserver ~ # whoami
root


The directory is owned by root and I have permission to write to it.



gentooserver ~ # ls -la /ceph
total 16
drwxrwx--x 1 root root 0 Jan 11 2018 .
drwxr-xr-x 1 root root 176 Sep 28 16:51 ..


There are no attributes set on the directory.



gentooserver ~ # lsattr -d /ceph
------------------ /ceph


No processes are using the directory.



gentooserver ~ # fuser /ceph


Nothing is mounted there.



gentooserver ~ # umount /ceph
umount: /ceph: not mounted.


SELinux disabled. Mount command:



gentooserver ~ # mount
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
none on /run type tmpfs (rw,nosuid,nodev,relatime,mode=755)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=10240k,nr_inodes=2039250,mode=755)
devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
/dev/sda3 on / type btrfs (rw,relatime,lazytime,compress=lzo,ssd,discard,space_cache,subvolid=5,subvol=/)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime)
bpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=28,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=1717)
mqueue on /dev/mqueue type mqueue (rw,relatime)
configfs on /sys/kernel/config type configfs (rw,relatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
nfsd on /proc/fs/nfsd type nfsd (rw,relatime)
/dev/sda2 on /boot type vfat (rw,relatime,lazytime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/sdf on /mnt/store type btrfs (rw,noatime,space_cache,autodefrag,subvolid=5,subvol=/)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=1632152k,mode=700,uid=1000,gid=1000)









share|improve this question



























  • Is there anything holding a file handle open within that directory? lsof | grep '/ceph'.

    – DopeGhoti
    Sep 28 '18 at 22:53











  • No. gentooserver ~ # lsof | grep '/ceph'

    – Gooberpatrol66
    Sep 28 '18 at 22:55











  • Is the filesystem readonly?

    – DopeGhoti
    Sep 28 '18 at 22:57











  • No. gentooserver ~ # mkdir ~/test gentooserver ~ # ls ~ auth filenames.bak nano restore test

    – Gooberpatrol66
    Sep 28 '18 at 23:11











  • What about SELinux? Also, can you post the entire output of mount?

    – Joseph Sible
    Sep 28 '18 at 23:46














1












1








1








The directory won't delete.



gentooserver ~ # rmdir /ceph
rmdir: failed to remove '/ceph': Operation not permitted


I am root.



gentooserver ~ # whoami
root


The directory is owned by root and I have permission to write to it.



gentooserver ~ # ls -la /ceph
total 16
drwxrwx--x 1 root root 0 Jan 11 2018 .
drwxr-xr-x 1 root root 176 Sep 28 16:51 ..


There are no attributes set on the directory.



gentooserver ~ # lsattr -d /ceph
------------------ /ceph


No processes are using the directory.



gentooserver ~ # fuser /ceph


Nothing is mounted there.



gentooserver ~ # umount /ceph
umount: /ceph: not mounted.


SELinux disabled. Mount command:



gentooserver ~ # mount
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
none on /run type tmpfs (rw,nosuid,nodev,relatime,mode=755)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=10240k,nr_inodes=2039250,mode=755)
devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
/dev/sda3 on / type btrfs (rw,relatime,lazytime,compress=lzo,ssd,discard,space_cache,subvolid=5,subvol=/)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime)
bpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=28,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=1717)
mqueue on /dev/mqueue type mqueue (rw,relatime)
configfs on /sys/kernel/config type configfs (rw,relatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
nfsd on /proc/fs/nfsd type nfsd (rw,relatime)
/dev/sda2 on /boot type vfat (rw,relatime,lazytime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/sdf on /mnt/store type btrfs (rw,noatime,space_cache,autodefrag,subvolid=5,subvol=/)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=1632152k,mode=700,uid=1000,gid=1000)









share|improve this question
















The directory won't delete.



gentooserver ~ # rmdir /ceph
rmdir: failed to remove '/ceph': Operation not permitted


I am root.



gentooserver ~ # whoami
root


The directory is owned by root and I have permission to write to it.



gentooserver ~ # ls -la /ceph
total 16
drwxrwx--x 1 root root 0 Jan 11 2018 .
drwxr-xr-x 1 root root 176 Sep 28 16:51 ..


There are no attributes set on the directory.



gentooserver ~ # lsattr -d /ceph
------------------ /ceph


No processes are using the directory.



gentooserver ~ # fuser /ceph


Nothing is mounted there.



gentooserver ~ # umount /ceph
umount: /ceph: not mounted.


SELinux disabled. Mount command:



gentooserver ~ # mount
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
none on /run type tmpfs (rw,nosuid,nodev,relatime,mode=755)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=10240k,nr_inodes=2039250,mode=755)
devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
/dev/sda3 on / type btrfs (rw,relatime,lazytime,compress=lzo,ssd,discard,space_cache,subvolid=5,subvol=/)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime)
bpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=28,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=1717)
mqueue on /dev/mqueue type mqueue (rw,relatime)
configfs on /sys/kernel/config type configfs (rw,relatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
nfsd on /proc/fs/nfsd type nfsd (rw,relatime)
/dev/sda2 on /boot type vfat (rw,relatime,lazytime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/sdf on /mnt/store type btrfs (rw,noatime,space_cache,autodefrag,subvolid=5,subvol=/)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=1632152k,mode=700,uid=1000,gid=1000)






permissions directory






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edited Sep 29 '18 at 0:55







Gooberpatrol66

















asked Sep 28 '18 at 22:44









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  • Is there anything holding a file handle open within that directory? lsof | grep '/ceph'.

    – DopeGhoti
    Sep 28 '18 at 22:53











  • No. gentooserver ~ # lsof | grep '/ceph'

    – Gooberpatrol66
    Sep 28 '18 at 22:55











  • Is the filesystem readonly?

    – DopeGhoti
    Sep 28 '18 at 22:57











  • No. gentooserver ~ # mkdir ~/test gentooserver ~ # ls ~ auth filenames.bak nano restore test

    – Gooberpatrol66
    Sep 28 '18 at 23:11











  • What about SELinux? Also, can you post the entire output of mount?

    – Joseph Sible
    Sep 28 '18 at 23:46



















  • Is there anything holding a file handle open within that directory? lsof | grep '/ceph'.

    – DopeGhoti
    Sep 28 '18 at 22:53











  • No. gentooserver ~ # lsof | grep '/ceph'

    – Gooberpatrol66
    Sep 28 '18 at 22:55











  • Is the filesystem readonly?

    – DopeGhoti
    Sep 28 '18 at 22:57











  • No. gentooserver ~ # mkdir ~/test gentooserver ~ # ls ~ auth filenames.bak nano restore test

    – Gooberpatrol66
    Sep 28 '18 at 23:11











  • What about SELinux? Also, can you post the entire output of mount?

    – Joseph Sible
    Sep 28 '18 at 23:46

















Is there anything holding a file handle open within that directory? lsof | grep '/ceph'.

– DopeGhoti
Sep 28 '18 at 22:53





Is there anything holding a file handle open within that directory? lsof | grep '/ceph'.

– DopeGhoti
Sep 28 '18 at 22:53













No. gentooserver ~ # lsof | grep '/ceph'

– Gooberpatrol66
Sep 28 '18 at 22:55





No. gentooserver ~ # lsof | grep '/ceph'

– Gooberpatrol66
Sep 28 '18 at 22:55













Is the filesystem readonly?

– DopeGhoti
Sep 28 '18 at 22:57





Is the filesystem readonly?

– DopeGhoti
Sep 28 '18 at 22:57













No. gentooserver ~ # mkdir ~/test gentooserver ~ # ls ~ auth filenames.bak nano restore test

– Gooberpatrol66
Sep 28 '18 at 23:11





No. gentooserver ~ # mkdir ~/test gentooserver ~ # ls ~ auth filenames.bak nano restore test

– Gooberpatrol66
Sep 28 '18 at 23:11













What about SELinux? Also, can you post the entire output of mount?

– Joseph Sible
Sep 28 '18 at 23:46





What about SELinux? Also, can you post the entire output of mount?

– Joseph Sible
Sep 28 '18 at 23:46










1 Answer
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The directory is a btrfs subvolume. Prior to Linux kernel 4.18 (specifically, commit a79a464), these could only be removed via btrfs subvol del /ceph, not with rmdir. See https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-subvolume for more details.






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    The directory is a btrfs subvolume. Prior to Linux kernel 4.18 (specifically, commit a79a464), these could only be removed via btrfs subvol del /ceph, not with rmdir. See https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-subvolume for more details.






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      The directory is a btrfs subvolume. Prior to Linux kernel 4.18 (specifically, commit a79a464), these could only be removed via btrfs subvol del /ceph, not with rmdir. See https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-subvolume for more details.






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        2










        2









        The directory is a btrfs subvolume. Prior to Linux kernel 4.18 (specifically, commit a79a464), these could only be removed via btrfs subvol del /ceph, not with rmdir. See https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-subvolume for more details.






        share|improve this answer















        The directory is a btrfs subvolume. Prior to Linux kernel 4.18 (specifically, commit a79a464), these could only be removed via btrfs subvol del /ceph, not with rmdir. See https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-subvolume for more details.







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        share|improve this answer








        edited 35 mins ago

























        answered Sep 29 '18 at 1:16









        Joseph SibleJoseph Sible

        1,4813 silver badges13 bronze badges




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