Re: [OpenWrt-Devel] replace /jffs with usb stick
On Tue, 2009-08-18 at 20:38 -0400, Stefan Monnier wrote: I am having a hard time to find the place where mounting root / really happens .. It's in /sbin/mount_root. And yes, it is not exactly trivial to find (although in retrospect I had to admit that the name should have made it pretty obvious). See below the patch I use on my WL-700gE to mount the IDE drive's partition. I really wish we could get some form of official support upstream for / mounted on USB devices. It seems that more and more people are re-inventing this wheel. Sadly. b. signature.asc Description: This is a digitally signed message part ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] replace /jffs with usb stick
I am in for that. I want to use an sd-modded wrt54gl and a usbsticked wl500w this way. Therefore I'd also like to put the optimized mmc module for kernel2.4 in the trunk. Any opinions? Should we keep the old and setup a kmod-broadcom-mmc2 or replace the old one (which doesn't work with my setup). How about: device node/fs/modules uci configurable if everything goes well the device is used instead of root_fs_data. While trying I came to a point where /etc/passwd was created on the stick only. This is problematic. I think the router should be able to work basically also without the extra filespace. Therefore I currently think it would make sense to overlay an existing jffs data partition. As the wl500w has 8MB space I currently tryout a setup without squashfs. But this might be impossible on 4MB devices. result would be: squashfs OVERLAYEDBY jffs (OVERLAYEDBY usb/mmc if exists) ... could anybody offer some help? I am really not experienced in the matter, but I am definitely interested in improving the situation. The result should be a switch on/works solution without fiddling the start scripts. .. bud On 19.08.2009 16:23, Brian J. Murrell wrote: On Tue, 2009-08-18 at 20:38 -0400, Stefan Monnier wrote: I am having a hard time to find the place where mounting root / really happens .. It's in /sbin/mount_root. And yes, it is not exactly trivial to find (although in retrospect I had to admit that the name should have made it pretty obvious). See below the patch I use on my WL-700gE to mount the IDE drive's partition. I really wish we could get some form of official support upstream for / mounted on USB devices. It seems that more and more people are re-inventing this wheel. Sadly. b. ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] replace /jffs with usb stick
I am having a hard time to find the place where mounting root / really
happens ..
It's in /sbin/mount_root. And yes, it is not exactly trivial to find
(although in retrospect I had to admit that the name should have made it
pretty obvious).
See below the patch I use on my WL-700gE to mount the IDE drive's partition.
Stefan
Index: mount_root
===
--- mount_root (révision 14605)
+++ mount_root (copie de travail)
@@ -2,15 +2,75 @@
# Copyright (C) 2006 OpenWrt.org
. /etc/functions.sh
+echo mount_root /tmp/stef
+
jffs2_ready () {
mtdpart=$(find_mtd_part rootfs_data)
magic=$(hexdump $mtdpart -n 4 -e '4/1 %02x')
[ $magic != deadc0de ]
}
+### Try to mount some drive.
+mount_drive () {
+# for m in jbd ext3; do
+# echo mount_drive $m /tmp/stef
+# insmod $m /tmp/stef 21
+# done
+
+rootdev=$1
+
+COUNTER=0
+while [ ! -b $rootdev ] [ $COUNTER -lt 10 ]; do
+echo mount sleep for $rootdev /tmp/stef
+sleep 1
+let COUNTER=COUNTER+1
+done
+
+mount $rootdev /mnt [ -x /mnt/sbin/init ] {
+echo mounted $rootdev /tmp/stef
+. /bin/firstboot
+pivot /mnt /rom
+exit
+}
+}
+
+# mount_ide () {
+# echo mount_ide /tmp/stef
+# for m in ide-core aec62xx ide-generic ide-disk; do
+# insmod $m /tmp/stef 21
+# done
+# mount_drive /dev/hde1
+# }
+
+# mount_usb () {
+# echo mount_usb /tmp/stef
+# # ehci-hcd is for USB2, ohci-hcd and uhci-hcd are both for USB1 but only
+# # one of them works. For WRTSL54GS, it's ohci, for WL700gE it's uhci.
+# for m in usbcore ohci-hcd uhci-hcd ehci-hcd scsi_mod sd_mod usb-storage;
do
+# echo mount_usb $m /tmp/stef
+# insmod $m /tmp/stef 21
+# done
+# mount_drive /dev/sda1
+# }
+
+#mount_usb
+#mount_ide
+(cd /etc/modules.d load_modules *)
+# GPIO 6 on WL-700gE is the `copy' button; if the button is released,
+# gpioctl returns 0, and it return 64 if it is pressed.
+# GPIO 4 on WL-700gE is the `ezsetup' button; if the button is released,
+# gpioctl returns 0, and it return 16 if it is pressed.
+if gpioctl get 6 /dev/null gpioctl get 4 /dev/null; then
+ # FIXME: This device name should come from a CONFIG_setting.
+ mount_drive /dev/hde1
+fi
+
+### If no drive, mount the JFFS2 partition or a ramdisk.
grep rootfs_data /proc/mtd /dev/null 2/dev/null {
+echo mount_root-11 /tmp/stef
. /bin/firstboot
mtd unlock rootfs_data
+echo mount_root-12 /tmp/stef
jffs2_ready {
echo switching to jffs2
mount $(find_mtd_part rootfs_data) /jffs -t jffs2 \
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Re: [OpenWrt-Devel] replace /jffs with usb stick
On Mon, 17 Aug 2009 20:05:19 +0200 bud.d...@suisse.org wrote: Hi all, I am having a hard time to find the place where mounting root / really happens .. http://oldwiki.openwrt.org/OpenWrtDocs%282f%29OpenWrtDocs%282f%29lKamikazeBootHowTo.html is not helpful https://forum.openwrt.org/viewtopic.php?id=10816 seems to be out of date. I added comments to /sbin/mount_root (but it doesn't seem to be executed at all) e.g. 'echo comment /tmp/test' or echo comment or logger comment I only get feedback from /etc/init.d/boot .. but everything seems to be mounted there already. I want to replace the jffs partition with the ext3 on an usb stick during boot on brcm-2.4. Any help appreciated :) On first boot it is mounted in /bin/firstboot. On subsequent boots it is mounted in /sbin/mount_root -- And that's my crabbing done for the day. Got it out of the way early, now I have the rest of the afternoon to sniff fragrant tea-roses or strangle cute bunnies or something. -- Michael Devore GnuPG Key Fingerprint 86 F5 81 A5 D4 2E 1F 1C http://gnupg.org The C Shore (Daniel Dickinson's Website) http://www.bmts.com/~cshore signature.asc Description: PGP signature ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
