Update cheatsheets

tldr/linux/bcachefs

@@ -6,7 +6,8 @@ source: https://github.com/tldr-pages/tldr.git
 # bcachefs
 
 > Manage `bcachefs` filesystems/devices.
-> More information: <https://bcachefs.org/bcachefs-principles-of-operation.pdf>.
+> Some subcommands such as `device` have their own usage documentation.
+> More information: <https://bcachefs-docs.readthedocs.io/en/latest/index.html>.
 
 - Format a partition with `bcachefs`:
 

tldr/linux/bcachefs-device

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# bcachefs device
+
+> Manage devices within a running `bcachefs` filesystem.
+> More information: <https://bcachefs-docs.readthedocs.io/en/latest/mgmt-devicemanagement.html>.
+
+- Format and add a new device to an existing filesystem.:
+
+`sudo bcachefs device add --label={{group}}.{{name}} {{path/to/mountpoint}} {{path/to/device}}`
+
+- Migrate data off a device to prepare for removal:
+
+`bcachefs device evacuate {{path/to/device}}`
+
+- Permanently remove a device from a filesystem:
+
+`bcachefs device remove {{path/to/device}}`

tldr/linux/ceph

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # ceph
 
 > A unified storage system.
-> More information: <https://ceph.io>.
+> More information: <https://ceph.io/en>.
 
 - Check cluster health status:
 

tldr/linux/firewall-cmd

@@ -6,15 +6,12 @@ source: https://github.com/tldr-pages/tldr.git
 # firewall-cmd
 
 > The firewalld command-line client.
+> View and adapt the runtime or permanent firewall configuration state.
 > More information: <https://firewalld.org/documentation/man-pages/firewall-cmd>.
 
-- View the available firewall zones:
+- View all available firewall zones and rules in their runtime configuration state:
 
-`firewall-cmd --get-active-zones`
-
-- View the rules which are currently applied:
-
-`firewall-cmd --list-all`
+`firewall-cmd --list-all-zones`
 
 - Permanently move the interface into the block zone, effectively blocking all communication:
 
@@ -28,10 +25,18 @@ source: https://github.com/tldr-pages/tldr.git
 
 `firewall-cmd --permanent --zone={{public}} --remove-service={{http}}`
 
-- Permanently open two arbitrary ports in the specified zone:
+- Permanently forward a port for incoming packets in the specified zone (like port 443 to 8443 when entering the `public` zone):
 
-`firewall-cmd --permanent --zone={{public}} --add-port={{25565/tcp}} --add-port={{19132/udp}}`
+`firewall-cmd --permanent --zone={{public}} --add-rich-rule='rule family="{{ipv4|ipv6}}" forward-port port="{{443}}" protocol="{{udp|tcp}}" to-port="{{8443}}"'`
 
-- Reload firewalld to force rule changes to take effect:
+- Reload firewalld to lose any runtime changes and force the permanent configuration to take effect immediately:
 
 `firewall-cmd --reload`
+
+- Save the runtime configuration state to the permanent configuration:
+
+`firewall-cmd --runtime-to-permanent`
+
+- Enable panic mode in case of Emergency. All traffic is dropped, any active connection will be terminated:
+
+`firewall-cmd --panic-on`

tldr/linux/xfs_repair

@@ -0,0 +1,13 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# xfs_repair
+
+> Repair an XFS filesystem.
+> More information: <https://manned.org/xfs_repair>.
+
+- Repair a partition:
+
+`sudo xfs_repair {{path/to/partition}}`