Solaris10 ZFS pool not accessible - Disk geometry

Hello,

i'm facing some strange problems with an Solaris10 64bit guest and the ZFS filesystem.

System was running for longer period without any problems. Suddenly ZFS complains about on

faulted ZFS pool. All devices are not accessible, although visible by the format tool.

Checking further shows that if ZFS is administrating the whole devices, the number of blocks is higher

then with a standard partition table.

Somebody else having this problem? Could it be that something might be wrong with the disk geometry insisde the VM guest?

Any help is highly appreciated.

Thanks,

Peter