reproduced on VMware VM:
``` root@dilos-test:~# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c2t0d0 <VMware-Virtual disk-2.0-40.00GB>
/pci@0,0/pci15ad,7a0@15/pci15ad,7c0@0/disk@0,0
1. c2t1d0 <VMware-Virtual disk-2.0 cyl 1303 alt 2 hd 255 sec 63>
/pci@0,0/pci15ad,7a0@15/pci15ad,7c0@0/disk@1,0
2. c2t2d0 <VMware-Virtual disk-2.0 cyl 1303 alt 2 hd 255 sec 63>
/pci@0,0/pci15ad,7a0@15/pci15ad,7c0@0/disk@2,0
3. c2t3d0 <VMware-Virtual disk-2.0 cyl 1303 alt 2 hd 255 sec 63>
/pci@0,0/pci15ad,7a0@15/pci15ad,7c0@0/disk@3,0
4. c2t4d0 <VMware-Virtual disk-2.0 cyl 1303 alt 2 hd 255 sec 63>
/pci@0,0/pci15ad,7a0@15/pci15ad,7c0@0/disk@4,0
5. c2t5d0 <VMware-Virtual disk-2.0 cyl 1303 alt 2 hd 255 sec 63>
/pci@0,0/pci15ad,7a0@15/pci15ad,7c0@0/disk@5,0
6. c2t6d0 <VMware-Virtual disk-2.0 cyl 1303 alt 2 hd 255 sec 63>
/pci@0,0/pci15ad,7a0@15/pci15ad,7c0@0/disk@6,0
Specify disk (enter its number): ^C
root@dilos-test:~# zpool create tst3 c2t1d0 c2t2d0 c2t3d0 c2t4d0
root@dilos-test:~# zpool list -v
NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
rpool 19.9G 4.47G 15.4G 20G 5% 22% 1.00x ONLINE -
c3t0d0 19.9G 4.47G 15.4G 20G 5% 22%
tst3 39.8G 212K 39.7G - 0% 0% 1.00x ONLINE -
c2t1d0 9.94G 74.5K 9.94G - 0% 0%
c2t2d0 9.94G 63K 9.94G - 0% 0%
c2t3d0 9.94G 0 9.94G - 0% 0%
c2t4d0 9.94G 74.5K 9.94G - 0% 0%
root@dilos-test:~#
root@dilos-test:~# sudo zfs create -o logbias=throughput -o sync=always -V 64M
tst3/space4
root@dilos-test:~# ls /dev/zvol/rdsk/tst3/space4
/dev/zvol/rdsk/tst3/space4
root@dilos-test:~# sudo fio --filename=/dev/zvol/rdsk/tst3/space4 --sync=1
--rw=write --bs=1K --numjobs=8 --iodepth=1 --size=10MB --name=panic
panic: (g=0): rw=write, bs=1K-1K/1K-1K/1K-1K, ioengine=psync, iodepth=1
...
fio-2.10
clock setaffinity failed: Operation not supported
clock setaffinity failed: Operation not supported
clock setaffinity failed: No such process
clock setaffinity failed: Operation not supported
Starting 8 processes
packet_write_wait: Connection to 192.168.1.227 port 22: Broken pipeps] [eta
00m:16s]
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