On 02/04/2016 12:32 PM, Vladimir Davydov wrote:
On Wed, Feb 03, 2016 at 07:46:12PM +0300, Andrey Ryabinin wrote:
Port of diff-ubc-dont-skip-dirty-metadata-on-filtered-sync patch
from PCS6.
Don't skip dirty metadata during per container sync[fs].
https://jira.sw.ru/browse/PSBM-39583
Signed-off-by: Andrey Ryabinin <aryabi...@virtuozzo.com>
The patch looks correct to me.
Reviewed-by: Vladimir Davydov <vdavy...@virtuozzo.com>
However, I've no idea why it was added to PCS6, neither do I know if we
still need it - unfortunately the original comment is not very helpful.
Konstantin?
date: 2012/01/11 19:59:46; author: xemul; state: Exp;
Author: Konstantin Khlebnikov
Email: khlebni...@openvz.org
Subject: ubc: disable filtered sync for too dirty inodes
Date: Tue, 10 Jan 2012 17:45:25 +0400
Filter only inodes with clean meta-data.
We cannot filter writes in this case. Actually we only move writes to
the journal thread, and it submit them in not very effective way.
Found-by: Alexey Kuznetsov <kuz...@parallels.com>
Signed-off-by: Konstantin Khlebnikov <khlebni...@openvz.org>
===================================================================
Looks like it was important for vzfs when all CTs shared single journal,
so it is more efficient to help writing journal data in the current context
comparing to moving all the stuff to single kjournald.
In Virtuozzo 7 we don't have vzfs, ploop-based Containers have separate journals
=>
i'm dropping this patch.
--
Best regards,
Konstantin Khorenko,
Virtuozzo Linux Kernel Team
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