I didn't suggest that a sync should close files but that it should flush the files.

Easy enough to fix - one line call to flush all.

-- Charles

On Sep 12, 2009 3:06 AM, <yaffs@piments.com> wrote:

Sorry , sent from wrong account.

Charles Manning wrote:

resend because list was down
On Wednesday 09 September 2009 22:30:28 Voser, Peter wrote:

Hi all,

When I modify a file, invoke sync and unplug the power of my device, the
expected file content has been saved, but the time stamp is still the old
one (without fclose invocation).

When I do the same with a friendly reboot, the file content is there *and*
the time stamp has been updated (still without fclose invocation).

I would expect the file stamp to be updated with sync, too.

Is this a bug or on purpose?

Hi Peter

At present a file system sync just snapshots the file system (ie does a checkpoint) . It does not flush the headers for the individual files.
A friendly reboot closes all the files

man sync:

DESCRIPTION
      Force changed blocks to disk, update the super block.

I've never seen that sync closes open files so I see no expectation for that but if I'm reading the man page correctly it seems the headers should be put out too.

It does not seem to be a case where an individual fs should decide what the "desired" functionality is.

best regards.

Is this a bug? Well I guess it depends on the desired functionality.

-- CHarles



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