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[ts-7000] backing up mtdblock/1

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Subject: [ts-7000] backing up mtdblock/1
From: "j.chitte" <>
Date: Sun, 04 Apr 2010 08:26:12 -0000
HI,

TS linuxarm-guide-rev-2.3  gives the following to install a new fs image to the 
board:

eraseall /dev/mtd/1
Mount the second partition of your on-board flash and extract the new 
filesystem:
mount /dev/mtdblock/1 /mnt
tar xzvf /path/to/7250_root_fs.tar.gz -C /mnt


but before blasting everything on the board I want a copy and I want to check I 
can write to the device. So I tried the reverse operation first.

I have a copy of the original TSlinux on the nfs server so I boot to it and 
mount the mtd block device

mkdir /mnt/tmp
mount /dev/mtdblock/1 /mnt/tmp

$ mount
/dev/root on / type nfs 
(rw,v2,rsize=4096,wsize=4096,hard,udp,nolock,addr=192.168.1.3)
none on /dev type devfs (rw)
proc on /proc type proc (rw)
/dev/mtdblock/1 on /mnt/tmp type yaffs2 (rw)

$ ls /mnt/tmp
bin         etc         initrd      mnt         sbin        var
busyhack    fastboot    lib         proc        tmp         www
dev         home        lost+found  root        usr



So far, so good.

but if I look on the server I see the new directory but it is empty:

bash-4.0#ls -ail /mnt/nfs/mnt/tmp
total 1
451041 drwxr-xr-x 2 root root 2 Apr  4 10:04 .
251430 drwxr-xr-x 6 root root 6 Apr  4 10:04 ..


I create a test file:

bash-4.0#touch !$/test.file
touch /mnt/nfs/mnt/tmp/test.file
bash-4.0#ls -ail /mnt/nfs/mnt/tmp
total 1
451041 drwxr-xr-x 2 root root 3 Apr  4 10:11 .
251430 drwxr-xr-x 6 root root 6 Apr  4 10:04 ..
451042 -rw-r--r-- 1 root root 0 Apr  4 10:11 test.file


But this is not visible on the ARM.

Am I being dumb here or is this inherent nfs brokeness?

TIA , /js




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