* Ordered data mode vs. writeback mode
@ 2008-06-16 22:59 Gary Hawco
2008-06-17 14:34 ` Andreas Dilger
2008-06-17 18:42 ` Mingming
0 siblings, 2 replies; 3+ messages in thread
From: Gary Hawco @ 2008-06-16 22:59 UTC (permalink / raw)
To: linux-ext4@vger.kernel.org
Noticed that the newest set of patches in ext4-patch-queue has ordered data
mode as the default mode again. Tune2fs is now able to switch modes again.
What is the preferred mode for a home desktop system with ext4? Is
writeback still the fastest, but ordered data has more data integrity? And
does delalloc only work when writeback is enabled? And does the commit=XX
seconds still only work with writeback mode, ala ext3, or is it a valid
option with ordered data mode?
Trying to get an idea of the plethora of new options available with ext4.
Keep up the good work!
Gary
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Ordered data mode vs. writeback mode
2008-06-16 22:59 Ordered data mode vs. writeback mode Gary Hawco
@ 2008-06-17 14:34 ` Andreas Dilger
2008-06-17 18:42 ` Mingming
1 sibling, 0 replies; 3+ messages in thread
From: Andreas Dilger @ 2008-06-17 14:34 UTC (permalink / raw)
To: Gary Hawco; +Cc: linux-ext4@vger.kernel.org
On Jun 16, 2008 22:59 +0000, Gary Hawco wrote:
> What is the preferred mode for a home desktop system with ext4? Is
> writeback still the fastest, but ordered data has more data integrity? And
> does delalloc only work when writeback is enabled? And does the commit=XX
> seconds still only work with writeback mode, ala ext3, or is it a valid
> option with ordered data mode?
Using ordered mode is the default and preferred mode.
Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Ordered data mode vs. writeback mode
2008-06-16 22:59 Ordered data mode vs. writeback mode Gary Hawco
2008-06-17 14:34 ` Andreas Dilger
@ 2008-06-17 18:42 ` Mingming
1 sibling, 0 replies; 3+ messages in thread
From: Mingming @ 2008-06-17 18:42 UTC (permalink / raw)
To: Gary Hawco; +Cc: linux-ext4@vger.kernel.org
On Mon, 2008-06-16 at 22:59 +0000, Gary Hawco wrote:
> Noticed that the newest set of patches in ext4-patch-queue has ordered data
> mode as the default mode again. Tune2fs is now able to switch modes again.
>
> What is the preferred mode for a home desktop system with ext4? Is
> writeback still the fastest, but ordered data has more data integrity? And
> does delalloc only work when writeback is enabled?
The update patch queue has patch to support delalloc on new ordered
mode. There seems an issue, Aneesh is debugging it now.
> And does the commit=XX
> seconds still only work with writeback mode, ala ext3, or is it a valid
> option with ordered data mode?
>
Should work for both mode.
Mingming
^ permalink raw reply [flat|nested] 3+ messages in thread
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