svn commit: r184934 - head/sys/ufs/ffs

Kostik Belousov kostikbel at gmail.com
Thu Nov 13 09:47:46 PST 2008


On Thu, Nov 13, 2008 at 05:40:21PM +0000, Doug Ambrisko wrote:
> Author: ambrisko
> Date: Thu Nov 13 17:40:21 2008
> New Revision: 184934
> URL: http://svn.freebsd.org/changeset/base/184934
> 
> Log:
>   For now on every 10 cyclinder groups flush the buffer cache to free
>   up space.  If the buffer cache fills up then the disk systems can
>   grind to a halt.  Better tuning can be figured out later.
>   
>   Tested by:	Tim, others and work
>   Reviewed by:	Kostik Belousov
>   PR:		128832
> 
> Modified:
>   head/sys/ufs/ffs/ffs_snapshot.c
> 
> Modified: head/sys/ufs/ffs/ffs_snapshot.c
> ==============================================================================
> --- head/sys/ufs/ffs/ffs_snapshot.c	Thu Nov 13 17:13:16 2008	(r184933)
> +++ head/sys/ufs/ffs/ffs_snapshot.c	Thu Nov 13 17:40:21 2008	(r184934)
> @@ -351,6 +351,8 @@ restart:
>  		if (error)
>  			goto out;
>  		bawrite(nbp);
> +		if (cg % 10 == 0)
> +			ffs_syncvnode(vp, MNT_WAIT);
>  	}
>  	/*
>  	 * Copy all the cylinder group maps. Although the
> @@ -372,6 +374,8 @@ restart:
>  			goto out;
>  		error = cgaccount(cg, vp, nbp, 1);
>  		bawrite(nbp);
> +		if (cg % 10 == 0)
> +			ffs_syncvnode(vp, MNT_WAIT);
>  		if (error)
>  			goto out;
>  	}
Thank you !

Please, MFC it for 7.1.
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