From: Chris Mason <chris.mason@oracle.com>
To: Billy Crook <billycrook@gmail.com>
Cc: "Ernst Sjöstrand" <ernstp@gmail.com>,
"Jordan Windsor" <jordanw2@gmail.com>,
linux-btrfs@vger.kernel.org
Subject: Re: Grow btrfs partition & filesystem backwards
Date: Wed, 9 Nov 2011 08:36:24 -0500 [thread overview]
Message-ID: <20111109133624.GO4149@shiny> (raw)
In-Reply-To: <CANZ96zWM-AuOc9OddyHPrVyQdOpGHqXC3twyGhsZFA=EZpDjUQ@mail.gmail.com>
The only choice for an online operation is to make a new partition in
front of the old one and just add that as a second disk in btrfs.
The slow method of shifting the bytes down is probably a better long
term choice.
-chris
On Wed, Nov 09, 2011 at 06:40:06AM -0600, Billy Crook wrote:
> I think the biggest point of contention is that with all the stuff
> going on in the background in btrfs, its difficult to be sure that th=
e
> resize operation has completed. With grows, you don't have to worry.
> With shrinks, if you truncate the block device too soon, you will
> corrupt the filesystem.
>=20
> 2011/11/9 Ernst Sj=F6strand <ernstp@gmail.com>:
> > Gparted can do that, it just takes a very long time because it move=
s
> > everything back first.
> >
> > Regards
> > //Ernst
> >
> > On Wed, Nov 9, 2011 at 05:23, Jordan Windsor <jordanw2@gmail.com> w=
rote:
> >> Hello,
> >> I was wondering how I would go about growing a btrfs filesystem
> >> backwards, I don't have any space to store the files temporally, I=
'd
> >> need to do it in place.
> >> Thanks.
> >> --
> >> To unsubscribe from this list: send the line "unsubscribe linux-bt=
rfs" in
> >> the body of a message to majordomo@vger.kernel.org
> >> More majordomo info at =A0http://vger.kernel.org/majordomo-info.ht=
ml
> >>
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-btr=
fs" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at =A0http://vger.kernel.org/majordomo-info.htm=
l
> >
> --
> To unsubscribe from this list: send the line "unsubscribe linux-btrfs=
" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" =
in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2011-11-09 13:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-09 4:23 Grow btrfs partition & filesystem backwards Jordan Windsor
2011-11-09 8:50 ` Ernst Sjöstrand
2011-11-09 12:40 ` Billy Crook
2011-11-09 13:36 ` Chris Mason [this message]
2011-11-09 18:58 ` Goffredo Baroncelli
2011-11-09 19:26 ` Chris Mason
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20111109133624.GO4149@shiny \
--to=chris.mason@oracle.com \
--cc=billycrook@gmail.com \
--cc=ernstp@gmail.com \
--cc=jordanw2@gmail.com \
--cc=linux-btrfs@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox