ZFS Trim

[Steven Hartland]

Thats an old sysctl so if your using a recent version you'll want
vfs.zfs.trim.enabled = 0

Unsupported means the device reported the "trim" request was rejected
by the underlying device, this will typically happen for HD's.

    Regard
    Steve

----- Original Message ----- 
From: "Beeblebrox" <zaphod at berentweb.com>
To: <freebsd-fs at freebsd.org>
Sent: Friday, November 29, 2013 11:06 AM
Subject: ZFS Trim


> Hello.
> I just recently enabled trim for my SSD + zpool:
> /boot/loader.conf => vfs.zfs.trim_disable=0
> The SSD hosts root zpool, plus ZIL of second pool hosted on spindle HDD.
> Previously I was using the configuration without trim code in loader.conf.
> 
> sysctl kstat.zfs.misc.zio_trim shows:
> kstat.zfs.misc.zio_trim.unsupported: 106
> kstat.zfs.misc.zio_trim.failed: 0
> 
> 2 questions:
> * What does the *trim.unsupported* mean for my setup
> * Do I need to run code to fix this (like zpool clean zil) in single-user
> mode?
> 
> Thank you.
> 
> 
> 
> -----
> FreeBSD-11-current_amd64_root-on-zfs_RadeonKMS
> --
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