linux-ext4 - Re: ext4_put_super is not called during system shutdown or restart

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Date:	Mon, 25 Apr 2011 18:02:16 +0300
From:	Amir Goldstein <amir73il@...il.com>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	Zhao Cai <zhaocai@...com>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Re: ext4_put_super is not called during system shutdown or restart

On Monday, April 25, 2011, Eric Sandeen <sandeen@...hat.com> wrote:
> On 4/24/11 11:12 PM, Zhao Cai wrote:
>> I would appreciate if anyone can give me an answer. Is it designed to
>> be like this?
>>
>> Detailed situation: The system is ubuntu 11.04 installed in VMware. I
>> notice that ext4_put_super() is called when I unmount a non-root ext4
>> partition. But it is not when I restart or shutdown the system.
>
> Even for a non-root filesystem?
>
> I don't know if ubuntu does anything special, but I would expect that during a system shutdown, non-root filesystems would be unmounted, and you'd get put_super called.  Unless the fs is busy and it can't be unmounted for some reason...

This strangely reminds me of my report that xfstests sometimes fails
to umount on Ubuntu 10.10.
But I could be just trying to hold on to the hope of somebody else
solving my problems...

>
> -Eric
>
>> Thanks。
>>
>> -- All the best,
>>
>> Zhao Cai
>>
>>
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