From: Karel Zak <kzak@redhat.com>
To: Tom Yan <tom.ty89@gmail.com>
Cc: james harvey <jamespharvey20@gmail.com>, util-linux@vger.kernel.org
Subject: Re: Mount doesn't show subvol option for btrfs
Date: Tue, 16 Jun 2015 10:59:19 +0200 [thread overview]
Message-ID: <20150616085919.GW1992@ws.net.home> (raw)
In-Reply-To: <CAGnHSEntiMk3f1PPLj8RUJU+T0EeVP0-KqsVLwVWpPVPkzgDhQ@mail.gmail.com>
On Tue, Jun 16, 2015 at 01:42:54PM +0800, Tom Yan wrote:
> [tom@localhost ~]$ mount | grep sda2
> /dev/sda2 on / type btrfs (rw,relatime,ssd,space_cache)
>
> [tom@localhost ~]$ cat /proc/self/mountinfo | grep sda2
> 19 0 0:17 /arch / rw,relatime shared:1 - btrfs /dev/sda2 rw,ssd,space_cache
>
> [tom@localhost ~]$ findmnt /dev/sda2
> TARGET SOURCE FSTYPE OPTIONS
> / /dev/sda2[/arch] btrfs rw,relatime,ssd,space_cache
>
> It won't be shown as a mount option.
Ah, good point. Yes, the subvolume directory is interpreted as FS
mount root, I forgot this btrfs feature.
Karel
--
Karel Zak <kzak@redhat.com>
http://karelzak.blogspot.com
prev parent reply other threads:[~2015-06-16 8:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-14 20:50 Mount doesn't show subvol option for btrfs james harvey
2015-06-15 11:28 ` Karel Zak
2015-06-16 5:42 ` Tom Yan
2015-06-16 8:59 ` Karel Zak [this message]
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