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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.