XFS error on enbd raid1

Is there a known problem with the above combination, have some trouble 
with enbd-2.3.32, kernel 2.6.12.3.
Running a raid1 on a local disk / enbd combination. When trying to start 
a standby disk that was written by the enbd device (as part of a raid1), 
the xfs recovery wont work:
Filesystem "md6": XFS internal error xlog_valid_rec_header(1) at line 
3500 of file fs/xfs/xfs_log_recover.c.  Caller 0xf89783d5
 [<f8978198>] xlog_valid_rec_header+0x108/0x190 [xfs]
 [<f89783d5>] xlog_do_recovery_pass+0x1b5/0xb80 [xfs]
 [<f89783d5>] xlog_do_recovery_pass+0x1b5/0xb80 [xfs]
 [<c0119d2e>] __wake_up+0x3e/0x60
 [<f8978e13>] xlog_do_log_recovery+0x73/0xe0 [xfs]
 [<f8978ebb>] xlog_do_recover+0x3b/0x180 [xfs]
 [<f89790ee>] xlog_recover+0xee/0x100 [xfs]
 [<f89704de>] xlog_alloc_log+0x25e/0x330 [xfs]
 [<f896f6ad>] xfs_log_mount+0x9d/0x130 [xfs]
 [<f897aab9>] xfs_mountfs+0x909/0xea0 [xfs]
 [<f89914fa>] .text.lock.xfs_buf+0x4b/0x51 [xfs]
 [<c023acbc>] _atomic_dec_and_lock+0x2c/0x60
 [<c041980d>] _spin_unlock+0xd/0x30
 [<f8979eb8>] xfs_readsb+0x1b8/0x230 [xfs]
 [<f896acdc>] xfs_ioinit+0x1c/0x30 [xfs]
 [<f8982a7e>] xfs_mount+0x2be/0x4c0 [xfs]
 [<f89985f0>] vfs_mount+0x60/0x70 [xfs]
 [<f89985f0>] vfs_mount+0x60/0x70 [xfs]
 [<f89983de>] linvfs_fill_super+0x9e/0x210 [xfs]
 [<c023a2e7>] snprintf+0x27/0x30
 [<c01a4514>] disk_name+0xb4/0xd0
 [<c016e64e>] sb_set_blocksize+0x2e/0x60
 [<c016df99>] get_sb_bdev+0xe9/0x160
 [<f8998580>] linvfs_get_sb+0x30/0x40 [xfs]
 [<f8998340>] linvfs_fill_super+0x0/0x210 [xfs]
 [<c016e243>] do_kern_mount+0x63/0xf0
 [<c0185cae>] do_new_mount+0x9e/0x100
 [<c01863e3>] do_mount+0x193/0x1d0
 [<c01861f3>] copy_mount_options+0x63/0xc0
 [<c01867ff>] sys_mount+0x9f/0xe0
 [<c010348b>] sysenter_past_esp+0x54/0x75
XFS: log mount/recovery failed: error 990
XFS: log mount failed
regards Uwe