[vdr] Re: Fast forward stops in timeshift mode

[Philippe Gramoullé <philippe.gramoulle@mmania.com>]

Hello,

[BTW, this is my first post to this list :)]

Well, it depends on the journalling mode:

data=writeback will only do meta-data journalling which could leave you with corrupted files.
data=ordered and data=journal with ensure full data-logging.

I'm quoting a recent post from LKML:

On Thu, 4 Sep 2003 09:12:56 -0700
Andrew Morton <akpm@osdl.org> wrote:

"In all journalling modes ext3 guarantees metadata consistency after a
 crash.  In its data=journal and data=ordered modes ext3 also guarantees that
 user data is consistent with metadata after a crash.

 However ext3 does not provide user data atomicity guarantees beyond the
 scope of a single filesystem disk block (usually 4 kilobytes).  If a
 single write() spans two disk blocks it is possible that a crash partway
 through the write will result in only one of those blocks appearing in the
 file after recovery"

Bye

Philippe

On 08 Sep 2003 16:37:25 +0200
Christoph Rauch <christoph.rauch@pfaffenhofen.de> wrote:

  | Indeed strange. As ext3 is a journalling fs, the changes should be
  | atomic and thus always in sync with each other.


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