linux-ext4 - [Bug 102731] I have a cough.

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Message-ID: <bug-102731-13602-taNjppTriJ@https.bugzilla.kernel.org/>
Date:	Mon, 31 Aug 2015 18:03:10 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 102731] I have a cough.

https://bugzilla.kernel.org/show_bug.cgi?id=102731

--- Comment #8 from Theodore Tso <tytso@....edu> ---
How many guest VM's are you running, and how often does the file system
corruption happens?   It sounds like it's about once every 2-3 weeks?

Would you be willing to experiment running the VM without using the RAID1 so
we're bypassing the MD layer?   One of the common factors between those people
who are reporting this are (a) they are using KVM, and (b) they are using RAID.
  Now, I'm doing all of my testing using KVM, and I've never seen anything like
this.   So I wonder if the operative issue is happening at the MD layer....

You workload is common enough that I would expect that if this was happening
for everyone who was using ext4, I should be getting a lot more bug reports.

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