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Date:      Sat, 18 Jul 2015 14:52:41 +1000
From:      "dylan@techtangents.com" <dylan@techtangents.com>
To:        freebsd-stable@freebsd.org
Subject:   Re: Problems adding Intel 750 to zfs pool
Message-ID:  <55A9DB99.8060908@techtangents.com>
In-Reply-To: <55A9D79E.3070601@techtangents.com>
References:  <55A9D79E.3070601@techtangents.com>

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I found this:
https://lists.freebsd.org/pipermail/freebsd-fs/2015-February/020828.html

Seems to be related to vfs.zfs.vdev.trim_on_init - I turn this off and 
it adds immediately.


> dylan@techtangents.com <mailto:dylan@techtangents.com>
> 18 July 2015 2:35 pm
> Hi,
>
> I've installed an Intel 750 400GB NVMe PCIe SSD in a Dell R320 running 
> FreeBSD 10.2-beta-1... not STABLE, but not far behind, I think. 
> Apologies if this is the wrong mailing list, or if this has been fixed 
> in STABLE since the beta.
>
> Anyway, I've gparted it into 2 partitions - 16GB for slog/zil and 
> 357GB for l2arc. Adding the slog partition to the pool takes about 2 
> minutes - machine seems hung during that time. Ping works, but I can't 
> open another ssh session.
>
> Adding the l2arc doesn't seem to complete - it's been going 10 minutes 
> now and nothing. Ping works, but I can't log in to the local console 
> or another ssh session.
>
> I'm adding the partitions using their gpt names. i.e.
> zpool add zroot log gpt/slog
> zpool add zroot cache gpt/l2arc
>
> The system BIOS is up-to-date. The OS was a fresh 10.1 install, then 
> freebsd-update to 10.2-beta2. 10.1 exhibited the same symptoms.
>
> Root is on zfs.
>
> Device was tested to be working on Windows 8.1 on a Dell T1700 
> workstation.
>
> Any ideas?
>
> Cheers,
>
> Dylan Just
>



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