Hello,
After some hours of testing I'm now totally lost with creating an ext3
file system on a (new) 4GB micro SD card.
Using my FR (running SHR) I created one new partition on the SD with
fdisk(1) and it looks like this:
root@om-gta02 ~ # fdisk -l /dev/mmcblk0
Disk /dev/mmcblk0: 3953 MB, 3953131520 bytes
4 heads, 16 sectors/track, 120640 cylinders
Units = cylinders of 64 * 512 = 32768 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
Disk identifier: 0x0aecb0ac
Device Boot Start End Blocks Id System
/dev/mmcblk0p1 1 120640 3860472 83 Linux
Then I created the ext3 file system on it with:
root@om-gta02 ~ # mkfs.ext3 /dev/mmcblk0p1
mke2fs 1.41.9 (22-Aug-2009)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
241440 inodes, 965118 blocks
48255 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=989855744
30 block groups
32768 blocks per group, 32768 fragments per group
8048 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736
Writing inode tables: done
Creating journal (16384 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 32 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
now mounting against the /etc/fstab line failes:
root@om-gta02 ~ # mount /media/card
mount: wrong fs type, bad option, bad superblock on /dev/mmcblk0p1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
mounting with "-t ext3" works and after this as well mounting with the
normal line in fstab(5) works too:
root@om-gta02 ~ # mount -t ext3 /dev/mmcblk0p1 /media/card
root@om-gta02 ~ # umount /media/card
root@om-gta02 ~ # mount /media/card
root@om-gta02 ~ #
and it is really mounted:
root@om-gta02 ~ # mount
...
/dev/mmcblk0p1 on /media/card type ext3 (rw,errors=continue,data=ordered)
now I create a dir and copy over some files from the host connected via
USB:
root@om-gta02 ~ # mkdir /media/card/dic
host:
$ scp -rp stardict-duden-2.4.2 root@miko:/media/card/dic
duden.ifo 100% 155 0.2KB/s 00:00
duden.idx 100% 2360KB 786.7KB/s 00:03
duden.dict.dz 100% 6719KB 559.9KB/s 00:12
scp: /media/card/dic/stardict-duden-2.4.2/duden.dict.dz: Read-only file system
scp: /media/card/dic/stardict-duden-2.4.2/duden.idx.oft: Read-only file system
scp: /media/card/dic/stardict-duden-2.4.2/duden(2).idx.oft: Read-only file
system
the SCP fails and magically now the SD in the FR is mounted read-only:
root@om-gta02 ~ # mount
...
/dev/mmcblk0p1 on /media/card type ext3 (ro,errors=continue,data=ordered)
What is wrong or what do I wrong with this SD card?
Thanks
matthias
--
Matthias Apitz
e <g...@unixarea.de> - w http://www.unixarea.de/
UNIX since V7 on PDP-11, UNIX on mainframe since ESER 1055 (IBM /370)
UNIX on x86 since SVR4.2 UnixWare 2.1.2, FreeBSD since 2.2.5
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