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Re: Still seeing hangs in xlog_grant_log_space

To: Mark Tinguely <tinguely@xxxxxxx>
Subject: Re: Still seeing hangs in xlog_grant_log_space
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Fri, 18 May 2012 19:31:20 +1000
Cc: Juerg Haefliger <juergh@xxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <4FAADCA8.6030702@xxxxxxx>
References: <20120426224412.GA9541@dastard> <CADLDEKs6oMDA-6OhmcFxyRoBVpduKtSput=53TQGn9NCAOXC1Q@xxxxxxxxxxxxxx> <20120426230738.GB9541@dastard> <CADLDEKuKLeYiqhQW0E9g_bS0VXoxPGPOck3N004Pxg4_Opbzow@xxxxxxxxxxxxxx> <20120427110922.GF9541@dastard> <CADLDEKtUHAGcOPT1jtcvyJVk+zsoL5_thYFtHJYs+w=6EGuVSA@xxxxxxxxxxxxxx> <CADLDEKs4YbNzj2c0HKHwSdUfKy0efdQRe1rOsWDkWUgd+BOGHw@xxxxxxxxxxxxxx> <20120507225944.GA5091@dastard> <20120509073507.GQ5091@dastard> <4FAADCA8.6030702@xxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Wed, May 09, 2012 at 04:07:52PM -0500, Mark Tinguely wrote:
> On 05/09/12 02:35, Dave Chinner wrote:
> 
> >
> >Transaction   Wait queues     Grant head      Write Head      Log head       
> > Log tail
> >-----------------------------------------------------------------------------------------
> >INACTIVE         empty empty     118 438024      118 438024      118 802     
> >    118 697
> >INACTIVE         empty empty     119 20240       119 20240       118 802     
> >    118 697
> >REMOVE           empty empty     118 438456      118 438456      118 802     
> >    118 697
> >REMOVE           empty empty     118 438772      118 438772      118 802     
> >    118 697
> >CREATE           empty empty     119 35872       119 35872       118 802     
> >    118 697
> >FSYNC_TS         active empty    119 205428      119 205428      118 802     
> >    118 697
> >FSYNC_TS         active empty    119 202944      119 202944      118 802     
> >    118 697
> >FSYNC_TS         active empty    119 200664      119 200664      118 802     
> >    118 697
> >REMOVE           empty empty     118 380316      118 380316      118 724     
> >    118 652
> >INACTIVE         empty empty     118 552532      118 552532      118 724     
> >    118 652
> >FSYNC_TS         empty empty     118 382140      118 382140      118 724     
> >    118 652
> >INACTIVE         empty empty     118 565968      118 565968      118 724     
> >    118 652
> >REMOVE           empty empty     119 25404       119 25404       118 802     
> >    118 697
> >INACTIVE         active empty    119 25580       119 25580       118 802     
> >    118 697
> 
> 
> 
> Just so you don't go down a blind alley, the timestamp on the log
> went backwards there. If you resort on the time stamps this does not
> go backwards.

Yup, you are right, timestamps jump around, so that may not be the cause.

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx

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