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From: Phil Carns <>
To: Yehuda Sadeh Weinraub <>
Subject: Re: minor file journal size bug
Date: Tue, 15 Jun 2010 14:29:38 -0400	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On 06/14/2010 01:37 PM, Yehuda Sadeh Weinraub wrote:
> On Mon, Jun 14, 2010 at 7:19 AM, Phil Carns<>  wrote:
>> Hi,
>> I ran into a minor problem when configuring the ObjectStore to use a file
>> journal that was 10 gigabytes in size (osd_journal_size = 10240).  The
>> osd_journal_size configuration parameter is an integer.  This would normally
>> be fine since the units are in megabytes, but it can overflow when bit
>> shifted in  This causes the journal to fall back to trying
>> to detect a raw block device journal.
>> I've attached a small patch that fixes the problem for me, but there is
>> probably a cleaner way to do it.
> Thanks!
> Just defining osd_journal_size as a long long would do the trick (as
> follows), although I'm not sure whether we need to be able to define
> journals that are bigger than 2^32 MB. So I guess that in this case we
> should probably go with your solution, and also go over the code and
> check to see whether we have some other places where we do the same.
> We should really be using some macro that does this conversion with a
> correct cast.
> Yehuda

Thanks Yehuda.  I don't know what the right long term answer is, but 
either way works fine for my test case (I just tried your patch to confirm).


      reply	other threads:[~2010-06-15 18:29 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-14 14:19 minor file journal size bug Phil Carns
2010-06-14 17:37 ` Yehuda Sadeh Weinraub
2010-06-15 18:29   ` Phil Carns [this message]

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