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Re: Error during bulk removal of files

To: Subranshu Patel <spatel.ml@xxxxxxxxx>
Subject: Re: Error during bulk removal of files
From: Mark Tinguely <tinguely@xxxxxxx>
Date: Mon, 13 May 2013 12:55:52 -0500
Cc: Dave Chinner <david@xxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <CAEUQceg6iy=TBrBkhan5bN5vO4y=JGcNy6LGhgfvO-7ereiB=Q@xxxxxxxxxxxxxx>
References: <CAEUQcejFPKDqqwbT_BNFJEVkUeAY=mgYGv-kUvLX6Ys7YQkqfg@xxxxxxxxxxxxxx> <518D22F0.8040405@xxxxxxx> <20130511011505.GB32675@dastard> <CAEUQceg6iy=TBrBkhan5bN5vO4y=JGcNy6LGhgfvO-7ereiB=Q@xxxxxxxxxxxxxx>
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On 05/13/13 11:15, Subranshu Patel wrote:
What 2.6.32 kernel? Output of uname -a?

  uname -a
Linux machine1 2.6.32-279.el6.x86_64 #1 SMP Wed Jun 13 18:24:36 EDT
2012 x86_64 x86_64 x86_64 GNU/Linux

  # cat /etc/issue
Red Hat Enterprise Linux Server release 6.3 (Santiago)

I am using mdtest program to delete 7 million files (of 1KB size).
Total 128 concurrent mdtest process are there. Each process removes
approx 54000 files ( 7 million / 128).
mdtest runs for a while, after that, it gets blocked and does not do
anything. However the machine is still responsive.


Is the delay log enabled? If so have you tried the command with it disabled?

Are you willing to take a crash of the hang? Or want to look at the entries on the AIL?

--Mark.

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