On Fri, Oct 3, 2008 at 10:17 AM, Kay Sievers <kay.sievers@xxxxxxxx> wrote: > On Fri, Oct 3, 2008 at 9:59 AM, Peter Leipold <ple@xxxxxxxxxx> wrote: >> On Friday 03 October 2008 00.47.23 Kay Sievers wrote: >>> Can you send me a copy of the sectors containing the ddf header? Along >>> with the exact dd commandline you used to extract it, so can copy it >>> to a drive and test it. >> >> Attached. I hope I did the right thing. I got the offset and size with >> dmraid's help (dumping raid metadata). So these dd commands resulted the same >> files as dmraid -rD: >> >> dd if=/dev/sda of=sda_ddf1.dat bs=1 count=6144 skip=200048559616 >> dd if=/dev/sdb of=sdb_ddf1.dat bs=1 count=6144 skip=200049641472 > > Looks good: > hexdump -C sda_ddf1.dat | head -1 > 00000000 11 de 11 de e2 e6 4c ae 38 5a b0 49 95 10 42 02 |......L.8Z.I..B.| > > 0xDE11DE11 is the signature we are looking for. I'll see if I can make > that work. Here is what I get now from the sector you sent: $ dd if=~/Desktop/sdb_ddf1.dat bs=1 seek=200049641472 of=ddf-header.img $ losetup /dev/loop0 ddf-header.img $ ./vol_id /dev/loop0 ID_FS_USAGE=raid ID_FS_TYPE=ddf_raid_member ID_FS_VERSION=02.00.0 ID_FS_UUID=8Z_I__B_8Z_I_e_I_q_I____ ID_FS_UUID_ENC=8Z\xb0I\x95\x10B\x028Z\xb0I\xc8e\xb0I\xb8q\xb0I\xff\xff\xff\xff ID_FS_LABEL= ID_FS_LABEL_ENC= If you want to try, let me know what it says: $ git clone git://git.kernel.org/pub/scm/linux/hotplug/udev.git $ cd udev $ ./autogen.sh $ cd extras/volume_id/ $ make $ ./vol_id /dev/sda $ ./vol_id /dev/sdb Note, that ./vol_id is just a autotools wrapper script, which runs the program with libvolume_id from the source tree, so don't copy the script to your system. :) Kay -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
