ZFS TRIM support committed to HEAD.

[Bob Bishop]

Hi,

On 24 Sep 2012, at 16:55, Steven Hartland wrote:

> ----- Original Message ----- From: "Bob Bishop" <rb at gid.co.uk>
> To: "Pawel Jakub Dawidek" <pjd at freebsd.org>
> Cc: <freebsd-current at freebsd.org>; <freebsd-fs at freebsd.org>; "Steven Hartland" <killing at multiplay.co.uk>
> Sent: Monday, September 24, 2012 3:17 PM
> Subject: Re: ZFS TRIM support committed to HEAD.
> 
> 
>> Hi,
>> On 23 Sep 2012, at 23:25, Pawel Jakub Dawidek wrote:
>>> I have a patch against stable/8, but not stable/9:
>>> http://people.freebsd.org/~pjd/patches/zfstrim8.patch
>> Running with that in an otherwise 8-STABLE GENERIC amd64 kernel, I'm getting:
>> kstat.zfs.misc.zio_trim.zio_trim_bytes: 0
>> kstat.zfs.misc.zio_trim.zio_trim_success: 0
>> kstat.zfs.misc.zio_trim.zio_trim_unsupported: 0
>> kstat.zfs.misc.zio_trim.zio_trim_failed: 2742
>> which doesn't look like it's working. The SSDs are:
>> ad4: 114473MB <ADATA SSD S510 120GB 3.3.2> at ata2-master UDMA100 SATA 3Gb/s
>> ad6: 114473MB <ADATA SSD S510 120GB 3.3.2> at ata3-master UDMA100 SATA 3Gb/s
>> Any suggestions? Thanks
> 
> Don't think ad supports TRIM, switch to ada (ahci) and you should be good.
> 
> Although I'm surprised your seeing that many reported failures as it should
> have disabled it on a pool level after the first few failures.
> 
> Is it still increasing?

Yes

I'll try switching to ahci

--
Bob Bishop
rb at gid.co.uk