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Attempting to mount external hard drive clobbers permissions
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Armand Karlsen
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Joined: 18 Aug 2005
Posts: 57
Location: London, UK

PostPosted: Wed Oct 09, 2024 9:01 pm    Post subject: Attempting to mount external hard drive clobbers permissions Reply with quote

I have an external hard drive formatted to XFS that I intend to use as an occasionally-connected offline backup and I want the normal user on my machine to be able to mount and write to it, for convenience.

I created the directory inside /mnt, then used chown and chmod to give ownership and full permissions to the user, and ls -l shows as such:
Code:
drwxrwxrwx 2 armand armand 6 Oct  9 21:27 extbak

The mountpoint is listed in /etc/fstab for read-write, allow non-root to mount:
Code:
PARTUUID=5916f543-8185-4d1a-8d6d-6e62246cc0a1   /mnt/extbak             xfs     noauto,rw,user                                                                  0       0

However, when I actually mount the drive, ownership and permissions get clobbered back to root, and it's turned read-only for everyone else:
Code:
drwxr-xr-x 2 root   root   6 Oct  9 20:42 extbak


Am I missing something really basic here, or how do I give the regular user read-write access to the drive?
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grknight
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Joined: 20 Feb 2015
Posts: 1862

PostPosted: Wed Oct 09, 2024 10:37 pm    Post subject: Reply with quote

Armand Karlsen wrote:
Am I missing something really basic here, or how do I give the regular user read-write access to the drive?

Change the permissions once mounted as it shows owners from the external drive's root after the mount.
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