Hello,
i hope someone can help. I have a Debian Wheezy with 3 Softwareraids. md0=root, md1=swap and md2 for Data. Filesystem is ext4 Disks are 3TB.

I shrinked the Raids from 7 to 6 disks, all looks good. State was clean. Than i reboot the system and run into grub rescue mode. After searching i saw that the md0 which is for the root filesystem could mounted and sda was missing. i reassembled sda and reboot. But the problem still exists. I boot the Debian-Installer from USB and run into the Rescuemode. There i find out that the partitiontable couldnt read. I tried another boot sequence and could boot from one disk into (initframs). All 3 Raids seems clean but dmsg shows unknown partitiontable and ext4 bad geometry block count exeeds size of device.
I tried efs2check /dev/md0, got lot of errors which i all accept and let rewrited.
thats the actual stand (sorry for my english)
Need help
thx

Could you post the output of:

thanks for reply.
Meanwhile i will reinstall the system. Backup starts tonight. But the answer of your questions:
and