Date: Tue, 23 Jul 2013 20:53:19 -0700 From: aurfalien <aurfalien@gmail.com> To: kpneal@pobox.com Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: TRIM and changing mount options Message-ID: <0E36189C-4876-4FA1-9909-96CC02DD6429@gmail.com> In-Reply-To: <20130724031000.GB23624@neutralgood.org> References: <316706C7-F038-4110-BB36-8EDFF9DC6A6B@gmail.com> <20130724031000.GB23624@neutralgood.org>
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On Jul 23, 2013, at 8:10 PM, kpneal@pobox.com wrote: > On Tue, Jul 23, 2013 at 03:54:57PM -0700, aurfalien wrote: >> Hi, >>=20 >> I've some what blindly followed a how to on installing FreeBSD 9.1 on = a ZFS mirror. >>=20 >> My typing is horrid so I simply ssh'd to a live CD env and pasted = line by line as per the how to found here; >>=20 >> = http://wp.strahlert.net/wordpress/zfs-2/installing-freebsd-9-1-using-root-= on-zfs-and-gpt-disks/ >>=20 >> All is well, no issues with replacing disks, testing failures etc... >>=20 >> But seeing that my system drives are SSDs, I thought to perhaps add = noatime, etc... to avoid slow downs common in excessive SSD usage. >>=20 >> However my fstab is only mounting swap partitions and I have no idea = how my file system is being mounted :) >=20 > That's typical for ZFS. Usually ZFS handles mounting filesystems = ("datasets" > in ZFS parlance) itself. Thats actually really cool and powerful. > Use the zfs command to see all the settings for individual datasets. = For > example: >=20 > [kpn@gunsight1 ~]$ zfs get atime gs1p/usr > NAME PROPERTY VALUE SOURCE > gs1p/usr atime on default >=20 > To see the atime setting for all datasets use 'zfs get atime'. >=20 > To see all settings replace 'atime' with 'all'. >=20 > To change the setting use 'zfs set'. >=20 > Settings are inherited by datasets mounted inside a dataset. To = disable > atime for all datasets you can set it to 'off' at the top dataset. Or = you > can set it for just some of your datasets, like maybe the one mounted = at > "/usr". You'll probably need atime enabled if you read mail on this = machine. >=20 > Also see 'zfs inherit'. For sure, thanks for this. >> Also, I would like to use tunefs in finding if I have TRIM enabled as = I did load it via boot.conf >=20 > Sorry, I can't help with that. Somebody else can chime in. Wondering if I should query the dev list but don't wanna post rather = mundane questions for them. I can't seem to find the patch set to download. - aurf=
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