Correct Permissions for New Partition (BTRFS) [Linux]

PARTPERM.md

Correct Permissions for New Partition (BTRFS) [Linux]

Commands and Solutions:

1. Set File Owner and Group:

chown -R $USER:$GROUP /run/media/$(whoami)/docs

1.1. SUPER SAIYAN ONELINER: Print the Groups Current User is Added To

getent group|grep -w $(whoami) | grep -w -v $(id -g) | awk -F ':' '{print $1}'

2. Set File Mode Bits:

chmod -R 755 /run/media/$(whoami)/docs

2.1. Set Restricted Deletion Flag (Optional):

chattr +i /run/media/$(whoami)/docs

2.2. Set Sticky Bit (Optional):

chmod +t /run/media/$(whoami)/docs

2.3 Update /etc/fstab (Optional):

echo "/dev/btrfs-partition /run/media/$(whoami)/docs btrfs defaults,user_subvol_rm_allowed 0 0" >> /etc/fstab

Conclusion:

• Set the file owner and group to the user who created the partition.
• Set the file mode bits to 755.
• Whether to set the restricted deletion flag and sticky bit is up to the individual user.

Notes:

• Commands should be executed in a terminal window with appropriate permissions.
• Replace /run/media/$(whoami)/docs with the actual mount point of your (BTRFS) partition.
• Use -R option with chown and chmod to recursively apply changes to all files and directories within the partition.
• The /etc/fstab update is optional but recommended to ensure the partition is mounted with the correct permissions on system boot.

Up Next:

• Extend based file storage (2^64 max file size)

• Space efficient packing of small files

• Space efficient indexed directories

• Dynamic inode allocation

• Writable snapshots

• Subvolumes (separate internal filesystem roots)

• Object level mirroring and striping

• Checksums on data and metadata (multiple algorithms available)

• Compression (multiple algorithms available)

• Reflink, deduplication

• Scrub (on-line checksum verification)

• Hierarchical quota groups (subvolume and snapshot support)

• Integrated multiple device support, with several raid algorithms

• Offline filesystem check

• Efficient incremental backup and FS mirroring (send/receive)

• Trim/discard

• Online filesystem defragmentation

• Swapfile support

• Zoned mode

• Read/write metadata verification

• Online resize (shrink, grow)