Split fs-btrfs

docs/linux/fs-btrfs.md

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+
+# Btrfs
+### Snapshot
+
+#### Create shapshot
+```bash
+btrfs subvolume snapshot xyz xyz-snapshot-path-name
+
+# or
+
+btrfs subvolume snapshot main "main-`date +%Y-%m-%d`"
+```
+#### Delete shapshot
+```bash
+btrfs subvolume delete xyz-snapshot-path-name
+
+# or
+
+btrfs subvolume delete "`echo main-* | tr ' ' \\\\n | sort | head -n 1`"
+```
+
+### Common
+
+#### Resize
+```bash
+btrfs filesystem resize max /mnt/dmp/
+
+# or for view ID
+
+btrfs device usage /mnt/dmp/
+btrfs filesystem resize ID:max /mnt/dmp/
+```
+#### Defragment / compress
+```bash
+btrfs filesystem defragment -v -clzo /boot/*
+
+# or
+
+chattr +c dir
+```
+#### Set RO / RW
+```bash
+btrfs property set -f . ro false
+btrfs property set -f . ro true
+```