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From: bugzilla-daemon@bugzilla.kernel.org
To: linux-ext4@vger.kernel.org
Subject: [Bug 201685] ext4 file system corruption
Date: Mon, 03 Dec 2018 11:02:40 +0000
Message-ID: <bug-201685-13602-IjKSZwXN0M@https.bugzilla.kernel.org/>
In-Reply-To: <bug-201685-13602@https.bugzilla.kernel.org/>
References: <bug-201685-13602@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=201685

--- Comment #194 from Marc Burkhardt (marc@osknowledge.org) ---
(In reply to Rainer Fiebig from comment #192)
> #136
> 
> It has been suggested that I/O-schedulers may play a role in this. So here's
> are my settings for 4.19.x for comparison. They deviate from yours in some
> points but I really don't know whether this has any relevance. You may want
> to give it a try anyway. As I've said, 4.19.x is a nice kernel here.
> 
> > grep -i sched .config_4.19-rc5 
> CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
> CONFIG_CGROUP_SCHED=y
> CONFIG_FAIR_GROUP_SCHED=y
> CONFIG_RT_GROUP_SCHED=y
> CONFIG_SCHED_AUTOGROUP=y
> CONFIG_SCHED_OMIT_FRAME_POINTER=y
> CONFIG_SCHED_SMT=y
> CONFIG_SCHED_MC=y
> CONFIG_SCHED_MC_PRIO=y
> CONFIG_SCHED_HRTICK=y
> # CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set
> # CONFIG_CPU_FREQ_GOV_SCHEDUTIL is not set
> # IO Schedulers
> CONFIG_IOSCHED_NOOP=y
> CONFIG_IOSCHED_DEADLINE=y
> CONFIG_IOSCHED_CFQ=y
> CONFIG_CFQ_GROUP_IOSCHED=y
> CONFIG_DEFAULT_IOSCHED="deadline"
> CONFIG_MQ_IOSCHED_DEADLINE=y
> CONFIG_MQ_IOSCHED_KYBER=y
> # CONFIG_IOSCHED_BFQ is not set
> CONFIG_NET_SCHED=y
> # Queueing/Scheduling
> CONFIG_USB_EHCI_TT_NEWSCHED=y
> CONFIG_SCHED_INFO=y
> CONFIG_SCHED_TRACER=y

Really, how come you say "these are your settings"?

The settings are, what is actually being used not what has ben compiled-in or I
miss anything?

What's the coincidence between 

CONFIG_DEFAULT_IOSCHED="deadline" + CONFIG_IOSCHED_DEADLINE=y

and

cat /sys/block/sda/queue/scheduler 
mq-deadline [kyber] bfq none

Please see #139 - wee need a list of what is effectively used and not what is
actually possible. Bare metal or not. Intel? AMD? hugepages or nor?

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