linux-kernel - Re: bfq/ext4 disk IO hangs forever on resume

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Message-ID: <20170818162920.6bd377ad.alex_y_xu@yahoo.ca>
Date:   Fri, 18 Aug 2017 16:29:20 -0400
From:   Alex Xu <alex_y_xu@...oo.ca>
To:     Ming Lei <tom.leiming@...il.com>, Jens Axboe <axboe@...nel.dk>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:EXT4 FILE SYSTEM" <linux-ext4@...r.kernel.org>
Subject: Re: bfq/ext4 disk IO hangs forever on resume

On Tue, 25 Jul 2017 20:18:07 +0800
Ming Lei <tom.leiming@...il.com> wrote as excerpted:

> On Mon, Jun 26, 2017 at 11:07 AM, Alex Xu <alex_y_xu@...oo.ca> wrote:
> > Hi,
> >
> > I get hangs when resuming when using bfq-mq with ext4 on 4.12-rc6+
> > (currently a4fd8b3accf43d407472e34403d4b0a4df5c0e71).  
> 
> Please test the following patch to see if it can help your issue:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=for-linus&id=765e40b675a9566459ddcb8358ad16f3b8344bbe
> 

I tried 4.13-rc3+ (including that commit) and still have (seemingly)
the same issue.