Creating zpool on NVMe Disks takes forever

[Michael Fuckner]

On 02/19/2015 03:22 PM, Linda Kateley wrote:
>
> On 2/19/15 7:02 AM, Tom Evans wrote:
>> On Thu, Feb 19, 2015 at 12:22 PM, Michael Fuckner
>> <michael at fuckner.net> wrote:
>>> On 02/19/2015 12:56 PM, Steven Hartland wrote:
>>>> Disable trim on init:
>>>> sysctl vfs.zfs.vdev.trim_on_init=0
>>> this fixed it, thx!
>>>
>>> but why does it take >8h to trim 2x 400GB? Or is trimming handled
>>> differently on NVMe than on HDD/SSD?
>> TRIM/UNMAP is simply an SATA/SCSI command that is sent to a device.
>> What the device does when it gets that command is up to the controller
>> and firmware on the device.
> It would be nice to know what nvme you have so we know that the firmware
> for this particular one will be handled poorly?

It is 2x Intel P3700 (400GB, PCIe Card, FW: 8DV10130 and Bootloader 
8B1B012D)- don't know how to extract this data in FreeBSD

root at s4l:~ # nvmecontrol devlist
  nvme0: INTEL SSDPEDMD400G4
     nvme0ns1 (381554MB)
  nvme1: INTEL SSDPEDMD400G4
     nvme1ns1 (381554MB)

Regards,
  Michael!