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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