Btrfs snapshot as user is not permitted Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern) 2019 Community Moderator Election Results Why I closed the “Why is Kali so hard” questionWhy can't a regular user delete a btrfs subvolumeSeems that chown is allowed to non root usersystemd mount 'rootfs' according to '/proc/cmdline'Hard link permissions behavior different between CentOS 6 and CentOS 7Btrfs RAID1: How to replace a disk drive that is physically no more there?User and Group permissions for mnt folder and files access in CentOS 7How come I, as a normal user, am able to change ownership of a file?Change btrfs default subvolume in order to delete snapshotHow to create a mount --bind when root does not have permission to access the source directory?Systemd Permission Issue With Chown
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Btrfs snapshot as user is not permitted
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)
2019 Community Moderator Election Results
Why I closed the “Why is Kali so hard” questionWhy can't a regular user delete a btrfs subvolumeSeems that chown is allowed to non root usersystemd mount 'rootfs' according to '/proc/cmdline'Hard link permissions behavior different between CentOS 6 and CentOS 7Btrfs RAID1: How to replace a disk drive that is physically no more there?User and Group permissions for mnt folder and files access in CentOS 7How come I, as a normal user, am able to change ownership of a file?Change btrfs default subvolume in order to delete snapshotHow to create a mount --bind when root does not have permission to access the source directory?Systemd Permission Issue With Chown
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My backup user should be able to create a btrfs snapshot of the system subvolume (mounted at /). But this doesent work.
Setup: subvol=/rootfs is mounted on / and subvol=/ is mounted on /btrfs
First:
root# mkdir /btrfs/backup && chown backup:backup /btrfs/backup
then as backup user:
backup$ btrfs subvol snapshot / /btrfs/backup/rootfs
Create a snapshot of '/' in '/btrfs/backup/rootfs'
ERROR: cannot snapshot '/': Operation not permitted
If I change the owner of / to be the backup user, it works, but is this the right way?
Ubuntu 16.04 / Linux 4.4.0-59-generic / btrfs-progs v4.4
linux permissions security backup btrfs
asked Jan 30 '17 at 10:20
jonasjonas
111
add a comment |
My backup user should be able to create a btrfs snapshot of the system subvolume (mounted at /). But this doesent work.
Setup: subvol=/rootfs is mounted on / and subvol=/ is mounted on /btrfs
First:
root# mkdir /btrfs/backup && chown backup:backup /btrfs/backup
then as backup user:
backup$ btrfs subvol snapshot / /btrfs/backup/rootfs
Create a snapshot of '/' in '/btrfs/backup/rootfs'
ERROR: cannot snapshot '/': Operation not permitted
If I change the owner of / to be the backup user, it works, but is this the right way?
Ubuntu 16.04 / Linux 4.4.0-59-generic / btrfs-progs v4.4
linux permissions security backup btrfs
asked Jan 30 '17 at 10:20
jonasjonas
111
add a comment |
My backup user should be able to create a btrfs snapshot of the system subvolume (mounted at /). But this doesent work.
Setup: subvol=/rootfs is mounted on / and subvol=/ is mounted on /btrfs
First:
root# mkdir /btrfs/backup && chown backup:backup /btrfs/backup
then as backup user:
backup$ btrfs subvol snapshot / /btrfs/backup/rootfs
Create a snapshot of '/' in '/btrfs/backup/rootfs'
ERROR: cannot snapshot '/': Operation not permitted
If I change the owner of / to be the backup user, it works, but is this the right way?
Ubuntu 16.04 / Linux 4.4.0-59-generic / btrfs-progs v4.4
linux permissions security backup btrfs
asked Jan 30 '17 at 10:20
jonasjonas
111
My backup user should be able to create a btrfs snapshot of the system subvolume (mounted at /). But this doesent work.
Setup: subvol=/rootfs is mounted on / and subvol=/ is mounted on /btrfs
First:
root# mkdir /btrfs/backup && chown backup:backup /btrfs/backup
then as backup user:
backup$ btrfs subvol snapshot / /btrfs/backup/rootfs
Create a snapshot of '/' in '/btrfs/backup/rootfs'
ERROR: cannot snapshot '/': Operation not permitted
If I change the owner of / to be the backup user, it works, but is this the right way?
Ubuntu 16.04 / Linux 4.4.0-59-generic / btrfs-progs v4.4
linux permissions security backup btrfs
linux permissions security backup btrfs
asked Jan 30 '17 at 10:20
jonasjonas
111
asked Jan 30 '17 at 10:20
jonasjonas
111
asked Jan 30 '17 at 10:20
jonasjonas
111
asked Jan 30 '17 at 10:20
jonasjonas
111
asked Jan 30 '17 at 10:20
jonasjonas
111
111
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Firstly, I see that you make a directory, not a subvolume.
btrfs subvolume create /path/to/the/location/…/subvolume-name
Secondly, the owner of a directory is different from a simple dir than a mount pont directory. In the second case, it's owned by root. So you must mount it and then, chown the directory mountpoint.
edited 10 hours ago
Rui F Ribeiro
42.1k1484142
answered Mar 18 '17 at 17:41
Anon's sampleAnon's sample
1
Thanks, but this does not really help me. I try to make a snapshot as user (not as root), which is not permitted even if the destination directory is owned by said user.
– jonas
Mar 21 '17 at 9:07
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Firstly, I see that you make a directory, not a subvolume.
btrfs subvolume create /path/to/the/location/…/subvolume-name
Secondly, the owner of a directory is different from a simple dir than a mount pont directory. In the second case, it's owned by root. So you must mount it and then, chown the directory mountpoint.
edited 10 hours ago
Rui F Ribeiro
42.1k1484142
answered Mar 18 '17 at 17:41
Anon's sampleAnon's sample
1
Thanks, but this does not really help me. I try to make a snapshot as user (not as root), which is not permitted even if the destination directory is owned by said user.
– jonas
Mar 21 '17 at 9:07
add a comment |
Firstly, I see that you make a directory, not a subvolume.
btrfs subvolume create /path/to/the/location/…/subvolume-name
Secondly, the owner of a directory is different from a simple dir than a mount pont directory. In the second case, it's owned by root. So you must mount it and then, chown the directory mountpoint.
edited 10 hours ago
Rui F Ribeiro
42.1k1484142
answered Mar 18 '17 at 17:41
Anon's sampleAnon's sample
1
Thanks, but this does not really help me. I try to make a snapshot as user (not as root), which is not permitted even if the destination directory is owned by said user.
– jonas
Mar 21 '17 at 9:07
add a comment |
Firstly, I see that you make a directory, not a subvolume.
btrfs subvolume create /path/to/the/location/…/subvolume-name
Secondly, the owner of a directory is different from a simple dir than a mount pont directory. In the second case, it's owned by root. So you must mount it and then, chown the directory mountpoint.
edited 10 hours ago
Rui F Ribeiro
42.1k1484142
answered Mar 18 '17 at 17:41
Anon's sampleAnon's sample
1
Firstly, I see that you make a directory, not a subvolume.
btrfs subvolume create /path/to/the/location/…/subvolume-name
Secondly, the owner of a directory is different from a simple dir than a mount pont directory. In the second case, it's owned by root. So you must mount it and then, chown the directory mountpoint.
edited 10 hours ago
Rui F Ribeiro
42.1k1484142
answered Mar 18 '17 at 17:41
Anon's sampleAnon's sample
1
edited 10 hours ago
Rui F Ribeiro
42.1k1484142
edited 10 hours ago
Rui F Ribeiro
42.1k1484142
edited 10 hours ago
Rui F Ribeiro
42.1k1484142
42.1k1484142
answered Mar 18 '17 at 17:41
Anon's sampleAnon's sample
1
answered Mar 18 '17 at 17:41
Anon's sampleAnon's sample
1
answered Mar 18 '17 at 17:41
Anon's sampleAnon's sample
1
1
Thanks, but this does not really help me. I try to make a snapshot as user (not as root), which is not permitted even if the destination directory is owned by said user.
– jonas
Mar 21 '17 at 9:07
add a comment |
Thanks, but this does not really help me. I try to make a snapshot as user (not as root), which is not permitted even if the destination directory is owned by said user.
– jonas
Mar 21 '17 at 9:07
Thanks, but this does not really help me. I try to make a snapshot as user (not as root), which is not permitted even if the destination directory is owned by said user.
– jonas
Mar 21 '17 at 9:07
Thanks, but this does not really help me. I try to make a snapshot as user (not as root), which is not permitted even if the destination directory is owned by said user.
– jonas
Mar 21 '17 at 9:07
add a comment |
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-backup, btrfs, linux, permissions, security
