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--- communitycloud:freifunk:openwrt [2012/09/08 05:05]
tkilla created
+++ communitycloud:freifunk:openwrt [2012/09/09 19:04] (current)
tkilla [USB storage]
@@ Line 8: / Line 8: @@
 search for your router model in:  http://wiki.openwrt.org to find specific instructions
-===== Basic Config =====
+===== Config =====
 ==== Install LUCI web interface ====
@@ Line 17: / Line 18: @@
   /etc/init.d/uhttpd start
-reach the webiface at http://<router IP>
+reach the webiface at http://router_IP/
@@ Line 26: / Line 27: @@
-edit /etc/passwd and replace /bin/ash for /bin/bash in the line starting with root
+edit **/etc/passwd** and replace **/bin/ash** for **/bin/bash** in the line starting with **root:**
   echo ". $HOME/.bashrc" > /root/.bash_profile
-put your custom .bashrc in /root/.bashrc
+put your custom .bashrc in **/root/.bashrc**
 ==== SSH publickey authentication ====
-you can do this from the webiface or manually:
+you can do this in the webiface or manually:
 copy your key from your desktop to the router's /tmp/ dir:
@@ Line 47: / Line 48: @@
+==== Reverse SSH publickey authentication - from router to desktop ====
+a private key is autogenerated by dropbear in /etc/dropbear/dropbear_rsa_host_key
+extract id_rsa.pub public key on the router:
+  dropbearkey -y -f /etc/dropbear/dropbear_rsa_host_key | grep ssh-rsa > /tmp/dropbear_rsa_host_key.pub
+add the content of this file to '~/.ssh/authorized_keys' on the remote box
+log in with
+  ssh -i /etc/dropbear/dopbear_rsa_host_key user@remotebox
+==== USB storage ====
+**USB2.0 kernel module installation:**
+http://wiki.openwrt.org/doc/howto/usb.essentials
+  opkg update
+  opkg install kmod-usb2
+  insmod ehci-hcd
+**package & filesystem modules installation:**
+http://wiki.openwrt.org/doc/howto/usb.storage#required.packages
+  opkg update
+  opkg install kmod-usb-storage kmod-usb-storage-extras kmod-scsi-generic e2fsprogs kmod-fs-ext4 kmod-fs-vfat
+  opkg install block-mount block-extroot block-hotplug
+**format usb drive:**
+FIXME testing ext4 options from https://blogofterje.wordpress.com/2012/01/14/optimizing-fs-on-sd-card/
+"Ext4 with block size of 4k, without journaling, but with additional parameters to encourage Ext4 to do the right thing with respect to the erasure block:"
+  mkfs.ext4 -O ^has_journal -E stride=2,stripe-width=1024 -b 4096 -L usbdata /dev/sdXY
+**auto mount on boot:**
+http://wiki.openwrt.org/doc/howto/usb.storage#configuration
+block-mount and block-hotplug will take care of boot and automount.
+edit config in /etc/config/fstab - example with swap and data partition:
+  config global automount
+        option from_fstab 1
+        option anon_mount 1
+  config global autoswap
+        option from_fstab 1
+        option anon_swap 1
+  config mount
+        option target   /mnt/sd
+        option device   /dev/sdc2
+        option fstype   ext4
+        option options  rw,sync,noatime,nodiratime
+        option enabled  1
+        option enabled_fsck 1
+  config swap
+        option device   /dev/sdc1
+        option enabled  1

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