----- Original Message -----
From: "matt" <sendtom...@gmail.com>
To: "Steven Hartland" <kill...@multiplay.co.uk>
Cc: <freebsd-current@FreeBSD.org>
Sent: Sunday, April 28, 2013 3:03 AM
Subject: Re: r249939+ not detecting ata trim
On 04/27/13 18:51, Steven Hartland wrote:
----- Original Message ----- From: "matt"
FYI: Change only requires kernel, world would be identical, which
should save you some time.
And some untrimmed deletes!
Thanks, with geom/cam/disk stuff I usually assume that it could affect
userland out of caution.
BTW...ata identify is working fine, as even before the patch camcontrol
identify indicated trim support.
Could you confirm the output you got from the debug as I would have
expected to see UNMAP supported on your machine if you mps?
Output for sysctls
kern.cam.da.3.delete_method: ATA_TRIM
kern.cam.da.3.delete_max: 17179607040
kern.cam.da.3.minimum_cmd_size: 6
kern.cam.da.3.sort_io_queue: 0
kern.cam.da.3.error_inject: 0
kern.cam.da.4.delete_method: ATA_TRIM
kern.cam.da.4.delete_max: 17179607040
Output for printf
deleteflag: ATA_TRIM (2) = 1
I thought UNMAP was a SCSI command (for SAS disks), unless we're calling
it UNMAP and then running ATA's TRIM?
Thats correct, the mps controllers I have here announce UNMAP support for
SATA disks that support TRIM and then do firmware translation on the
commands sent from the OS before passing them to the disks.
This is why I was expecting your controller to still do support delete's
eventhough ATA_TRIM wasn't enabled yet.
I'd be interested to see the details of your controller e.g.
Apr 28 01:36:17 host01 kernel: mps0: <LSI SAS2008> port 0xf000-0xf0ff mem 0xfbe00000-0xfbe03fff,0xfbd80000-0xfbdbffff irq 56 at
device 0.0 on pci129
Apr 28 01:36:17 host01 kernel: mps0: Reserved 0x4000 bytes for rid 0x14 type 3
at 0xfbe00000
Apr 28 01:36:17 host01 kernel: mps0: Firmware: 14.00.00.00, Driver:
14.00.00.01-fbsd
Apr 28 01:36:17 host01 kernel: mps0: IOCCapabilities:
185c<ScsiTaskFull,DiagTrace,SnapBuf,EEDP,TransRetry,IR>
Apr 28 01:36:17 host01 kernel: mps0: attempting to allocate 1 MSI-X vectors (15
supported)
Regards
Steve
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