OESF Portables Forum
Everything Else => Zaurus Distro Support and Discussion => Distros, Development, and Model Specific Forums => Archived Forums => Angstrom & OpenZaurus => Topic started by: grog on January 07, 2005, 10:09:45 pm
-
Hi all. I saw a thread recently where a poster mentioned that he/she had two diferent partitions on his/her sd card, one fat & one ext2/3. I want to keep my card 'doze read/writeable to make copying files easier, but I'd love to be able to have part of it's 1GB of space available to install programs. and if 'doze can't touch the program part, all the better.
So I'm thinking of have two partitions, one 200MB ext2/3 & one 800MB FAT for mp3's, etc. Good idea? How? What tools do I use to partition & format (never done that under linux before)? Any better ideas?
thanks
-
Fdisk should help you out.
A real Fdisk, not a windows one.
Download yourself a copy of Knoppix if you dont have a linux box.
It'll come in handy for other stuff too.
You should be able to drop your card in a card reader and run
fdisk /dev/sda
on it.
There was some info a while back (Maybe on oz.org?) about doing some freaky voodoo to get windows to see the whole disk with an EXT2 partition on it.
I PMed you with some other info.
-
fdisk is in the OZ feed so you can do it all from your Z.
Si
-
Fdisk should help you out. A real Fdisk, not a windows one.
Thanks for the extra tips. You are correct that I have a card reader (a jumpdrive, kinda handy), but I'd prefer to learn how to do it from linux, though. One of these days I'll get around to partitioning my xp pc so I can spend some time with linux again. It's been a while.
fdisk is in the OZ feed so you can do it all from your Z.i
Thanks you two. I should have thought of that. It's just another type of disk, after all. For some reason I was thinking it would be harder than that.
And afer I get the partitions set up, what next? IIRC it's mkfs, right? In another thread here (https://www.oesf.org/forums/index.php?showtopic=7196&hl=mkfs\.ext2) if found the e2fsprogs-mke2fs & dosfstools packages, so now I have mkfs.ext[23] & mkfs.vfat. That should be all I need, right?
So now the last question (that I can think of right now :^>). EXT2 or EXT3? Which should it be? I've heard that 2 is less overhead, but 3 has better error handling. If I'm right, which is better for the Z?
thanks
-
Ext3 is a journalling file system, which is usually better because it keeps things tidy if you lose power or your computer goes down.
However, that journal will tear through your SD cards maximum read/writes much faster than an ext2 system.
I use ext2 on my SD cards and havent had (m)any problems.
You may want to check your /etc/fstab to make sure it is mounting the file system that you want.
/dev/mmcda1 vs /dev/mmcda2
-
I use ext2 on my SD cards and havent had (m)any problems.
You may want to check your /etc/fstab to make sure it is mounting the file system that you want.
/dev/mmcda1 vs /dev/mmcda2
Good enough for me. Thanks again.
-
Hi all. I finally got back around to setting my card up & now I have an 800M fat partition & a 200M ext2. Pretty cool. But the only thing is that even though I put an entry into /etc/fstab the second partition isn't mounted automatically when I (re)insert the card.
root@grond:~# cat /etc/fstab
/dev/mtdblock2 / jffs2 rw,noatime 1 1
/dev/mtdblock3 /home jffs2 defaults,noatime 1 2
proc /proc proc defaults 0 0
/dev/hda1 /mnt/cf auto defaults,sync,noauto 0 0
/dev/mmcda1 /mnt/card auto defaults,sync,noauto 0 0
/dev/mmcda2 /mnt/card1 auto defaults,sync,noauto 0 0
tmpfs /var tmpfs defaults 0 0
# tmpfs /mnt/ram tmpfs defaults 0 0I know that the 'noauto' options are what's preventing it from being on boot. But I figured out that the /etc/sdcontrol script is what controls the mounting of the card, right? But before I go ahead & edit this script, is there a better way to go about this? thks
-
In case anybody else is interested, here's my hack of the /etc/sdcontrol script to allow mounting of multiple partitions on a sd card. Just add the entries to the /etc/fstab. Seems to work for me. Comments? HTH
#!/bin/sh
#
# sdcontrol 1.0 2001/8/8 21:33:19 (Hideki Hayami)
#
# Initialize or shutdown a SD card device
#
# The first argument should be either 'insert' of 'eject'.
#
# 2005-02-09 GROG! (grog@paunix.org) Mount all sd card filesystems listed in /etc/fstab unless specified otherwise
# set -x # TESTING
ACTION=$1
[ $# -gt 0 ] && shift
DEVICE=/dev/mmcda1
MOUNT_POINT=/mnt/card
SMB_MOUNT=/home/samba/SD_Card
INSTALL_DIR=Documents/Install_Files
#FSTYPE="-t vfat"
FATOPTS="-o noatime,quiet,umask=000,iocharset=utf8"
EXT2OPTS="-o noatime"
###### for QPE ######
get_pid()
{
echo $1
}
wait_release()
{
MOUNT_POINT_WAIT=$MOUNT_POINT
count=1
while true
do
umount $MOUNT_POINT_WAIT
if [ $? = 0 ]; then
#echo umount >> /tmp/sd
return
fi
echo count=$count >> /tmp/sd
if [ `expr $count \>= 500` = 1 ]; then
#echo time out >> /tmp/sd
return
fi
count=`expr $count + 1`
usleep 200000
done
}
kill_task()
{
DEVICE_KILL=$DEVICE
ps_line=`ps ax | grep 'qpe$'` # no -w on busybox
qpe_pid=`get_pid $ps_line`
#echo qpe_pid = $qpe_pid >> /tmp/sd
target_pids=`fuser -m $DEVICE_KILL | cut -d : -f2`
#echo $target_pids >> /tmp/sd
if [ "$target_pids" = "" ]; then
return
fi
is_exist_qpe=`echo $target_pids | grep $qpe_pid` # no -w on busybox
if [ "$is_exist_qpe" = "" ]; then
kill -9 $target_pids
#echo kill -9 $target_pids >> /tmp/sd
else
#echo "found qpe!!!" >> /tmp/sd
target_pids=`echo $target_pids | sed -e "s/$qpe_pid//"`
if [ "$target_pids" != "" ]; then
kill -9 $target_pids
#echo kill -9 $target_pids >> /tmp/sd
fi
wait_release
exit 0
fi
}
###### for QPE ######
mount_card_func() {
# set -x
case "$ACTION" in
'insert')
mount $FSTYPE $FATOPTS $DEVICE $MOUNT_POINT
MOUNT_RES=`mount | grep $DEVICE`
if [ "$MOUNT_RES" = "" ]; then
mount $FSTYPE $EXT2OPTS $DEVICE $MOUNT_POINT
fi
MOUNT_RES=`mount | grep $DEVICE`
if [ "$MOUNT_RES" = "" ]; then
mount $FSTYPE $DEVICE $MOUNT_POINT
fi
chkmntsh ${MOUNT_POINT}
if [ -d $SMB_MOUNT ]; then
rm -rf $SMB_MOUNT
fi
ln -s $MOUNT_POINT $SMB_MOUNT
mkdir -p $MOUNT_POINT/$INSTALL_DIR
#echo mount $? >> /tmp/sd
;;
'eject')
umount $MOUNT_POINT
if [ $? -eq 0 ]; then
rm $SMB_MOUNT
else
exit 1
fi
;;
'compeject')
is_mount=`mount | grep $DEVICE`
if [ "$is_mount" = "" ]; then
exit 0
fi
kill_task # for QPE
#fuser -k -m $DEVICE > /dev/null
umount $MOUNT_POINT
if [ $? != 0 ]; then
usleep 500000
umount $MOUNT_POINT
#echo umount $? >> /tmp/sd
#else
# echo umount >> /tmp/sd
fi
rm $SMB_MOUNT
;;
'change')
$0 compeject
$0 insert
;;
'*')
exit 1
;;
esac
} # mount_card_func
if [ $# -eq 0 ]; then
# mount all filesystems from /etc/fstab
while read fstab_line; do
set -- $fstab_line
case $1 in *mmcda*)
DEVICE=$1
MOUNT_POINT=$2
FATOPTS="-o $4"
mount_card_func
esac
done < /etc/fstab
else
DEVICE=$1
MOUNT_POINT=$2
mount_card_func
fi
exit 0
And here's a copy of my /etc/fstab
/dev/mtdblock2 / jffs2 rw,noatime 1 1
/dev/mtdblock3 /home jffs2 defaults,noatime 1 2
proc /proc proc defaults 0 0
/dev/hda1 /mnt/cf auto defaults,sync,noauto,noatime 0 0
/dev/mmcda1 /mnt/card auto defaults,sync,noauto,noatime 0 0
/dev/mmcda2 /usr/local auto defaults,sync,noauto,noatime 0 0
tmpfs /var tmpfs defaults 0 0
# tmpfs /mnt/ram tmpfs defaults 0 0
-
FWIW I had to add 'umask=000' options to both of the card filesystems lines in my /etc/fstab to allow non-root users write access.