Fix OpenWRT
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| − | =Introduction= | + | [[Category:User Instructions]] |
| + | [[Category:How To]] | ||
| + | |||
| + | '''HOWTO fix some older OpenWRT issues''' | ||
| + | |||
| + | ==Introduction== | ||
Vera uses a slightly outdated Kamikaze version of OpenWRT embedded Linux distribution for Broadcom platform, based on 2.4 Linux kernel. | Vera uses a slightly outdated Kamikaze version of OpenWRT embedded Linux distribution for Broadcom platform, based on 2.4 Linux kernel. | ||
| − | =Flash Partitions= | + | ===Issues=== |
| + | Since the release, used in Vera, there were several changes in OpenWRT, which need to be taken into account in order to get extra packages installed successfully: | ||
| + | |||
| + | * Packages now specify in their metadata how much space they take on the filesystem, thus ipkg first checks if enough space is available. But it doesn't take mini_fo overlay into account and complains that there is 0 bytes available in the root filesystem, since it's read-only. | ||
| + | * In latest trunk snapshots (besides switching from ipkg to opkg) all the packages now specify "brcm-2.4" architecture instead of the old "mipsel", rendering them incompatible with the release of OpenWRT used in Vera. Although, there are ways to make Vera recognize "brcm-2.4" architecture as compatible, there can be issues with some packages not working properly. | ||
| + | |||
| + | ==Prerequisites== | ||
| + | ===Flash Partitions=== | ||
The default hardware Vera runs on is Asus WL-500g router with 16MB or RAM and 8MB of flash. Flash is split into several partitions: | The default hardware Vera runs on is Asus WL-500g router with 16MB or RAM and 8MB of flash. Flash is split into several partitions: | ||
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There is only 1.8MB of compressed space available for installing additional packages into the system. This data filesystem is mounted as /jffs, but is also an overlay of the rootfs in / (uses mini_fo fs, a la union fs, providing "copy on write" access) | There is only 1.8MB of compressed space available for installing additional packages into the system. This data filesystem is mounted as /jffs, but is also an overlay of the rootfs in / (uses mini_fo fs, a la union fs, providing "copy on write" access) | ||
| − | =Package Manager= | + | ===Package Manager=== |
The package manager in this version of OpenWRT is ipkg (Itsy Packager). It uses configuration file /etc/ipkg.conf | The package manager in this version of OpenWRT is ipkg (Itsy Packager). It uses configuration file /etc/ipkg.conf | ||
| − | = | + | ==Instructions== |
| − | + | ||
| − | + | ===Fixes=== | |
| − | + | ||
| − | + | ||
| − | =Fixes= | + | |
So, to solve the first item, we need to instruct ipkg to install packages into /jffs instead of / and add an extra "dest" line to /etc/ipkg.conf (should be the first "dest" to work as a default): | So, to solve the first item, we need to instruct ipkg to install packages into /jffs instead of / and add an extra "dest" line to /etc/ipkg.conf (should be the first "dest" to work as a default): | ||
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src X-Wrt http://downloads.x-wrt.org/xwrt/kamikaze/8.09.2/brcm-2.4/packages | src X-Wrt http://downloads.x-wrt.org/xwrt/kamikaze/8.09.2/brcm-2.4/packages | ||
| − | =Summary= | + | ===Summary=== |
Here is the final /etc/ipkg.conf file: | Here is the final /etc/ipkg.conf file: | ||
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src X-Wrt http://downloads.x-wrt.org/xwrt/kamikaze/8.09.2/brcm-2.4/packages | src X-Wrt http://downloads.x-wrt.org/xwrt/kamikaze/8.09.2/brcm-2.4/packages | ||
| − | =Testing= | + | ===Testing=== |
First, we need to download the metadata with the list of installable packages: | First, we need to download the metadata with the list of installable packages: | ||
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# etherwake | # etherwake | ||
Specify the Ethernet address as 00:11:22:33:44:55. | Specify the Ethernet address as 00:11:22:33:44:55. | ||
| + | |||
| + | ==References== | ||
Latest revision as of 20:54, 22 May 2011
HOWTO fix some older OpenWRT issues
Contents |
[edit] Introduction
Vera uses a slightly outdated Kamikaze version of OpenWRT embedded Linux distribution for Broadcom platform, based on 2.4 Linux kernel.
[edit] Issues
Since the release, used in Vera, there were several changes in OpenWRT, which need to be taken into account in order to get extra packages installed successfully:
- Packages now specify in their metadata how much space they take on the filesystem, thus ipkg first checks if enough space is available. But it doesn't take mini_fo overlay into account and complains that there is 0 bytes available in the root filesystem, since it's read-only.
- In latest trunk snapshots (besides switching from ipkg to opkg) all the packages now specify "brcm-2.4" architecture instead of the old "mipsel", rendering them incompatible with the release of OpenWRT used in Vera. Although, there are ways to make Vera recognize "brcm-2.4" architecture as compatible, there can be issues with some packages not working properly.
[edit] Prerequisites
[edit] Flash Partitions
The default hardware Vera runs on is Asus WL-500g router with 16MB or RAM and 8MB of flash. Flash is split into several partitions:
- 128KB bootloader
- ~500KB Linux kernel
- ~5.8MB root squashfs filesystem (r/o)
- 64KB config storage
- ~1.8MB data jffs filesystem (r/w)
There is only 1.8MB of compressed space available for installing additional packages into the system. This data filesystem is mounted as /jffs, but is also an overlay of the rootfs in / (uses mini_fo fs, a la union fs, providing "copy on write" access)
[edit] Package Manager
The package manager in this version of OpenWRT is ipkg (Itsy Packager). It uses configuration file /etc/ipkg.conf
[edit] Instructions
[edit] Fixes
So, to solve the first item, we need to instruct ipkg to install packages into /jffs instead of / and add an extra "dest" line to /etc/ipkg.conf (should be the first "dest" to work as a default):
dest jffs /jffs
To address the second issue above, we should use the released Kamikaze versions of the packages, instead of the trunk. The URL of the system repository is http://downloads.openwrt.org/kamikaze/8.09.2/brcm-2.4/packages and the URL of the X-Wrt repository is http://downloads.x-wrt.org/xwrt/kamikaze/8.09.2/brcm-2.4/packages
The first line with the default system OpenWRT repository URL has to be changed like this:
src snapshots http://downloads.openwrt.org/kamikaze/8.09.2/brcm-2.4/packages
The last line with the X-Wrt repository URL should look like this:
src X-Wrt http://downloads.x-wrt.org/xwrt/kamikaze/8.09.2/brcm-2.4/packages
[edit] Summary
Here is the final /etc/ipkg.conf file:
src snapshots http://downloads.openwrt.org/kamikaze/8.09.2/brcm-2.4/packages dest jffs /jffs dest root / dest ram /tmp src X-Wrt http://downloads.x-wrt.org/xwrt/kamikaze/8.09.2/brcm-2.4/packages
[edit] Testing
First, we need to download the metadata with the list of installable packages:
# ipkg update Downloading http://downloads.openwrt.org/kamikaze/8.09.2/brcm-2.4/packages/Packages Updated list of available packages in /usr/lib/ipkg/lists/snapshots Downloading http://downloads.x-wrt.org/xwrt/kamikaze/8.09.2/brcm-2.4/packages/Packages Updated list of available packages in /usr/lib/ipkg/lists/X-Wrt Done.
Then we can get the list of available packages with "ipkg list" and install extra packages with "ipkg install <pkgname>":
# ipkg install etherwake Installing etherwake (1.09-1) to jffs... Downloading http://downloads.openwrt.org/kamikaze/8.09.2/brcm-2.4/packages/etherwake_1.09-1_mipsel.ipk Configuring etherwake Done. # etherwake Specify the Ethernet address as 00:11:22:33:44:55.
