Re: Some raid1 questions

On Sunday February 1, yg@mind.lu wrote:

quoted

Hello,

I have my home partition on a raid1 device, and there is an ext3
filesystem on it. Some more information:

...

quoted

Recently I had some freezes (due to nvidia...?), and everytime I had
to  make a hard reset.

Everytime then the raid resynced completely which took about 1.5
hours. One time I lost some kde settings when this happened.

quoted

The filesystem did not complain about an unclean shutdown, it seems it
 did not see on bootup that the last shutdown was unclean.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

quoted

Now to my questions:
Is this the normal behaviour?

Which behaviour?

Sorry for being unclear...
After an unclean shutdown, my raid always rebuilds, and the filesystem never
replays the journal. I just does not see that it was not properly unmounted.

Now again :)... is that the normal behaviour?

  1.5 hour resync -- maybe. It depends on the speed and size of the
    drives.

ok

  lost kde settings -- maybe. It depends on how well kde copes with
    sudden system failure.

ok

  The filesystem didn't complain -- Yes.  ext3 doesn't complain about
    an unclean shutdown.  It just replays the journal and keeps
    working.

It did not replay anything in these cases.

quoted

Shouldn't the filesystem take care of that?

  Take care of what?  I suspect it did take care of everything it
  could.

quoted

What is the point of having a journaling filesystem on a mirror?

  Lots.  A journaling filesystem guards against unclean shutdown.  A
mirror guards against drive failure.  These are compliementary.

quoted

Is there anything I can change to have the filesystem handle unclean
shutdowns?

 I think it did handle the unclean shutdown just fine.
 The loss of kde settings is probably dud to KDE note being careful
enough when updating it's settings file.

NeilBrown

quoted

TIA,
Yves


--
Linux 2.4.24 #5 Mon Jan 5 19:38:06 CET 2004 i686
 14:25:55 up  4:14,  1 user,  load average: 0.43, 0.40, 0.32

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