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Re: BUGS: btrfs multi-device support fixes

From: Andrey Borzenkov
Subject: Re: BUGS: btrfs multi-device support fixes
Date: Sun, 27 Oct 2013 19:24:28 +0400

В Sun, 27 Oct 2013 10:47:45 -0400
Gene Czarcinski <address@hidden> пишет:

> On 10/27/2013 02:54 AM, Andrey Borzenkov wrote:
> > В Sat, 26 Oct 2013 16:16:19 -0400
> > Gene Czarcinski <address@hidden> пишет:
> >
> >> On 10/26/2013 12:27 PM, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
> >>> Rejected, similar patches is in trunk since some time.
> >> Thanks.  I was not aware that the problem had been addressed.  Can you
> >> point me where to look to see what has been addressed?
> >>
> > This is commit 588744d0dc655177d5883bdcb8f72ff5160109ed.
> And that sure looks like something I would expect to see from a git 
> repository!
> Look, I am not stupid but I sure am confused!  The grub2 website 
> ( says that all grub2 development done 
> through bazaar repository and that you get a copy of the latest grub2 
> source with: |
>    bzr branch|
> Well, I tried doing that and all I get is an error saying: "bzr: ERROR: 
> Not a branch:"

That's where website lags behind. GRUB switched to GIT a while ago. See

As for web site - I do not know; Vladimir, who can edit this?

> Now fedora has a local git repository for grub2 located here: 
> git:// and when I look at what is there 
> I see that the updates (when they come in) appear to be in git format.
> On other little thing.  I I sent this current message there were TWO bug 
> fixes (TWO patch files).  I well believe that the first one was already 
> in trunk since I had originally reported that problem in January 2013.  
> The reason I reported it again is because it had not been pick up by fedora.
> However, there is that second bug fix which I only recently found and 
> fixed.  This problem occurs when you have /boot on BTRFS either as a 
> separate subvolume or simply as directory under the root subvolume. In 
> 10_linux, when grub2-probe is call for hint, it returns multi-device 
> hints separated by "\n" which completely screws things up.  The patch is:
> diff --git a/util/grub-probe.c b/util/grub-probe.c
> index a46f0b1..dd5de00 100644
> --- a/util/grub-probe.c
> +++ b/util/grub-probe.c
> @@ -543,7 +543,7 @@ probe (const char *path, char **device_names, char 
> delim)
>             print_full_name (map, dev);
>             printf ("' ");
>           }
> -      printf ("\n");
> +      printf (" "); /* new-line causes problems for multi-device btrfs 
> volumes */
>         grub_device_close (dev);
>         continue;

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