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From: Jordi Pujol <jordipujolp@gmail.com>
To: Miklos Szeredi <miklos@szeredi.hu>, linux-fsdevel@vger.kernel.org
Subject: Re: overlayfs patches for ovl_copy_up & ovl_rename
Date: Thu, 19 May 2011 15:34:06 +0200	[thread overview]
Message-ID: <201105191534.06785.jordipujolp@gmail.com> (raw)
In-Reply-To: <87sjsbc901.fsf@tucsk.pomaz.szeredi.hu>

A Dijous 19 Maig 2011 11:52:46, vàreu escriure:
> Thanks for the info.
welcome,

> So what you see as the end result is the same as the original lower
> file?  Or there's a file on the upper filesystem which contains old data?

it does consecutive changes in upperdir, one of the intermediate changes is 
not done,
like if a process is using a file while a previous process has not yet finished 
to replace it.

> 
> >   in the package upgrade, the file
> > 
> > does not exists, it is created on tmpfs and moved to the final
> > overlayfs directory; after we can check that it does not exist there.
> 
> Does it exist on the upper filesystem?
no, neither.

> "mv" between two filesystems is actually impelemented as copy+remove.

therefore is that my patch is not modifying the right procedure,

Thanks,

Jordi Pujol

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  reply	other threads:[~2011-05-19 13:34 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-04 14:59 overlayfs patches for ovl_copy_up & ovl_rename Jordi Pujol
2011-05-05  9:06 ` Miklos Szeredi
2011-05-09  6:38   ` Jordi Pujol
2011-05-10 16:20     ` Miklos Szeredi
2011-05-17  8:43       ` Miklos Szeredi
2011-05-17 17:18         ` Jordi Pujol
2011-05-17 18:07           ` Miklos Szeredi
2011-05-18  7:44             ` Jordi Pujol
2011-05-18  8:42               ` Miklos Szeredi
2011-05-19  7:47                 ` Jordi Pujol
2011-05-19  8:49                   ` Miklos Szeredi
2011-05-19  9:24                     ` Jordi Pujol
2011-05-19  9:52                       ` Miklos Szeredi
2011-05-19 13:34                         ` Jordi Pujol [this message]
2011-05-21  5:10                       ` Jordi Pujol
2011-05-23  9:21                         ` Miklos Szeredi
2011-05-24 15:53                           ` Jordi Pujol
2011-05-27 15:03                           ` Jordi Pujol
2011-05-31  9:01                             ` Miklos Szeredi
2011-05-19  8:52                   ` Jordi Pujol

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