Under Xen 4.0.1-1 on debian squeeze amd64, running zpool import results in the following errors:

Message from syslogd@socrates at Jan 30 00:46:06 ...
kernel:[ 622.900418] Oops: 0000 [#10] SMP

Message from syslogd@socrates at Jan 30 00:46:06 ...
kernel:[ 622.901368] last sysfs file: /sys/devices/pci0000:00/0000:00:09.0/host5/target5:0:0/5:0:0:0/block/sdd/removable

Message from syslogd@socrates at Jan 30 00:46:06 ...
kernel:[ 622.902020] Stack:

Message from syslogd@socrates at Jan 30 00:46:06 ...
kernel:[ 622.902020] Call Trace:

Message from syslogd@socrates at Jan 30 00:46:06 ...
kernel:[ 622.902020] Code: 47 81 48 89 c2 48 89 c8 48 be 00 f0 ff ff ff 3f 00 00 48 c1 e8 1b 48 21 f2 49 b8 00 00 00 00 00 88 ff ff 25 f8 0f 00 00 48 01 d0 <4a> 8b 3c 00 48 85 ff 0f 84 82 00 00 00 ff 14 25 f0 ed 47 81 48

Message from syslogd@socrates at Jan 30 00:46:06 ...
kernel:[ 622.902020] CR2: ffff9d5555555000
Killed

Attempting to pass the name of a known, exported zpool results in the same error. The exported pool was created using zfs-linux.