[parted-devel] Possible Race Condition using test code, libparted, and Fedora 12

[Petr Uzel]

On Sun, Jan 03, 2010 at 01:30:56PM -0700, Curtis Gedak wrote:
> Note:  This is a repost of my email on Dec 21, 2009 which appears to
> have been held up due to the size of attachments.  As such I am
> reposting with no attachments.
> ------------------------------
> 
> 
> I am seeking help to resolve a intermittent problem when using the
> libparted library.
> 
> 
> PROBLEM
> 
> The problem is that on newer GNU/Linux distributions, the libparted
> library occasionally reports the following error message:
> 
>      The kernel was unable to re-read the partition table on /dev/sdb
>      (Device or resource busy).  This means Linux won't know anything
>      about the modifications you made until you reboot.  You should
>      reboot your computer before doing anything with /dev/sdb.
> [ .... ]

Hi,

I'm not sure, but it might be the same issue as discussed here:
https://bugzilla.novell.com/show_bug.cgi?id=539521

Comment #16 mentions two commits from parted-git; after posting this
comment, I found out that these two are not always enough to fix
the issue, so please add the quick and dirty patch attached to this
mail.

With these three patches, I was not able to reproduce -EBUSY anymore.


HTH,


-- 
Best regards / s pozdravem

Petr Uzel, openSUSE Boosters Team
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