Re: Automatically mount or remount EXT3 partitions with EXT2 when alaptop is powered by a battery?

Andrew Morton
2002-06-26T18:41:01Z

Stephen Tweedie wrote:
>
> Hi,
>
> On Tue, Jun 25, 2002 at 10:03:47AM -0700, Andrew Morton
> <akpm@zip.com.au> wrote:
>
> > If it's because of the disk-spins-up-too-much problem then
> > that can be addressed by allowing the commit interval to be
> > set to larger values.
>
> > +int jbd_commit_interval = 5; /* /proc/sys/fs/jbd_commit_interval */
>
> I suspect you want this to be per-mount, not system-wide (although
> filesystems could easily just inherit the system default dynamically
> if there's no per-fs override.) I could easily imagine a user wanting
> a different interval for a scratch disk, for example.
>

Yes, that would be better. We do want to be able to change it
on the fly. So how about:

mount /dev/what /mnt/where -o commit_interval=5
and
mount /mnt/where -o remount,commit_interval=3000

?

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