Subject: Re: Question about activating SoftUpdates.
To: Manuel Bouyer , Brad Knowles <brad.knowles@skynet.be>
From: Brad Knowles <brad.knowles@skynet.be>
List: port-sparc
Date: 11/08/2001 12:19:56
At 12:10 PM +0100 11/8/01, Manuel Bouyer wrote:

>  No, it's only used to indicate if it was used the last time the fs
>  was mounted.  soft update is only enabled via mount option.

	Then that's different from my understanding of how the 
previous implementation worked.  I'll have to think about the 
implications of this to see if there are any weaknesses I can 
identify.

>  I don't munge with fstab:
>  mount -o softdep ...
>
>  I don't even reboot to turn it on or off.

	But you do have to unmount and remount the filesystem.  Since 
tunefs only works on unmounted (or read-only) filesystems, I don't 
see any practical difference here.

	Moreover, your changes don't survive reboots, whereas with 
tunefs they would.

	IMO, there would still appear to be disadvantages to using 
mount instead of tunefs.

-- 
Brad Knowles, <brad.knowles@skynet.be>

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