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Re: synchronization of XFS

To: Stefan Smietanowski <stesmi@xxxxxxxxxx>
Subject: Re: synchronization of XFS
From: "IKARASHI, Seiichi" <ikarashi@xxxxxxxxxxxxxxxx>
Date: Mon, 29 Mar 2004 14:31:02 +0900
Cc: Steve Lord <lord@xxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Chris Wedgwood <cw@xxxxxxxx>, linux-xfs@xxxxxxxxxxx
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Hello,

Stefan Smietanowski wrote:
> Hi Steve.
> 
>> Try this for an experiment, before the run, set
>>
>> /proc/sys/fs/xfs/sync_interval
>>
>> down to some small number like 1000, pause for a couple
>> of seconds after calling sync, and then see if grub
>> can see the files via the block device.
>>
>> This tunable controls how long xfs delays writing out
>> inodes into the metadata cache from their internal format.
> 
> 
> Alright. I'll try that on my DVD in a few hours and get back to you.

How was this testing result?
I suppose setting sync_interval to 1000 and sleeping 2 seconds
after sync is basically same as sleeping 4 seconds or more with
the default sync_interval value (3000?).

Seiich


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