From: Chris Murphy <lists@colorremedies.com>
To: Emmanuel Florac <eflorac@intellique.com>
Cc: Eric Sandeen <sandeen@sandeen.net>, xfs <linux-xfs@vger.kernel.org>
Subject: Re: [somewhat OT] I just discovered that Stratis uses XFS.
Date: Wed, 3 Oct 2018 16:47:05 -0600 [thread overview]
Message-ID: <CAJCQCtQyXjB1bzOWuj8f+cd-WgFkxDY8xpZ8YhVoTC72rPLThA@mail.gmail.com> (raw)
In-Reply-To: <20181002183018.37343c26@harpe.intellique.com>
On Tue, Oct 2, 2018 at 10:30 AM, Emmanuel Florac <eflorac@intellique.com> wrote:
> Le Tue, 2 Oct 2018 10:05:42 -0500
> Eric Sandeen <sandeen@sandeen.net> écrivait:
>
>> But if Stratis starts at 1TB it's not terrible; I'd need to look and
>> see how many AGs get created (probably 4?) and if so, 250G AGs are
>> not /too/ granular. If it's creating a lot more smaller AGs, that
>> could become an issue if it gets grown to a very large size. IOWs
>> the growfs concern is mostly about the resulting AG size & AG count.
>>
>
> You're right, I've looked through the source code and no option ever
> gets passed to mkfs.xfs nor xfs_growfs related to FS size. That means
> that it creates the FS with the default 4 AGs for a start.
Stratis volumes are always built on dm-thin so I'd expect default
mkfs.xfs to create ~33 AG's, which is what I get when running mkfs.xfs
on LVM thin volumes.
--
Chris Murphy
next prev parent reply other threads:[~2018-10-04 5:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-02 14:25 [somewhat OT] I just discovered that Stratis uses XFS Emmanuel Florac
2018-10-02 14:37 ` Emmanuel Florac
2018-10-02 15:05 ` Eric Sandeen
2018-10-02 16:30 ` Emmanuel Florac
2018-10-03 22:47 ` Chris Murphy [this message]
2018-10-04 10:27 ` Emmanuel Florac
2018-10-02 21:46 ` Dave Chinner
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