linux-ext4 - Re: Test generic/299 stalling forever

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Message-ID: <30fef8cd-67cc-da49-77d9-9d1a833f8a48@fb.com>
Date:   Wed, 19 Oct 2016 11:49:12 -0600
From:   Jens Axboe <axboe@...com>
To:     "Theodore Ts'o" <tytso@....edu>
CC:     Dave Chinner <david@...morbit.com>, <linux-ext4@...r.kernel.org>,
        <fstests@...r.kernel.org>, <tarasov@...ily.name>
Subject: Re: Test generic/299 stalling forever

On 10/19/2016 08:06 AM, Jens Axboe wrote:
> On 10/18/2016 12:01 PM, Theodore Ts'o wrote:
>> Jens, ping?
>>
>> Have you had a chance to take a look at the stack traces?  Is there
>> any other debugging information I can get for you?
>
> I'll take a look today. I agree, this definitely looks like a fio
> bug. But not related to the mutex issue for the stat part, all verifier
> threads are waiting to be woken up, but the main thread is done.
>
> I'll see if I can reproduce. If not, I may ask you to dump more info
> from the hung processes.

Been running for 4 hours now, in a loop, with bs=1k. I haven't been able
to reproduce. Before I go through the hassle of doing the google compute
engine thing, can you give me some details of the hardware?

Number of cores/nodes?
Memory size?
Rough speed and size of the device?
Any special mkfs options?

And whatever else might be relevant.

-- 
Jens Axboe

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