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Re: xfstests: device busy when umount

To: Eric Sandeen <sandeen@xxxxxxxxxx>
Subject: Re: xfstests: device busy when umount
From: Amir Goldstein <amir73il@xxxxxxxxx>
Date: Tue, 17 May 2011 18:01:14 +0300
Cc: Yongqiang Yang <xiaoqiangnk@xxxxxxxxx>, Ext4 Developers List <linux-ext4@xxxxxxxxxxxxxxx>, xfs-oss <xfs@xxxxxxxxxxx>
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On Tue, May 17, 2011 at 5:32 PM, Eric Sandeen <sandeen@xxxxxxxxxx> wrote:
> On 5/17/11 4:03 AM, Yongqiang Yang wrote:
>> Hi,
>> I noticed that all tests which contain 'device busy' errors have
>> falloc operations.  Does the error have something to do with falloc?
> cc'ing xfs list since xfs devs maintain xfstests.
> What tests have "device busy" errors?  What do the usual investigative
> steps such as "lsof" and "fuser" tell you when this happens?

I tried running lsof | grep $TEST_DIR before umount
and I tried sleep 1 before umount and it didn't yield anything.

> Are there loop devices that didn't get cleaned up, or processes that
> have not terminated?
> What tests have these problems?

for me 124 always fails to umount, and 198 and 213 sometimes fails to umount.

> -Eric

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