Re: [PATCH 3/3] xfs/216: handle larger log sizes

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On Fri, Apr 15, 2022 at 03:25:31AM +0800, Zorro Lang wrote:
> On Wed, Apr 13, 2022 at 06:51:49PM -0700, Darrick J. Wong wrote:
> > On Thu, Apr 14, 2022 at 01:44:00AM +0800, Zorro Lang wrote:
> > > On Mon, Apr 11, 2022 at 03:55:13PM -0700, Darrick J. Wong wrote:
> > > > From: Darrick J. Wong <djwong@xxxxxxxxxx>
> > > > 
> > > > mkfs will soon refuse to format a log smaller than 64MB, so update this
> > > > test to reflect the new log sizing calculations.
> > > > 
> > > > Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> > > > ---
> > > >  tests/xfs/216.out |   14 +++++++-------
> > > >  1 file changed, 7 insertions(+), 7 deletions(-)
> > > > 
> > > > 
> > > > diff --git a/tests/xfs/216.out b/tests/xfs/216.out
> > > > index cbd7b652..3c12085f 100644
> > > > --- a/tests/xfs/216.out
> > > > +++ b/tests/xfs/216.out
> > > > @@ -1,10 +1,10 @@
> > > >  QA output created by 216
> > > > -fssize=1g log      =internal log           bsize=4096   blocks=2560, version=2
> > > > -fssize=2g log      =internal log           bsize=4096   blocks=2560, version=2
> > > > -fssize=4g log      =internal log           bsize=4096   blocks=2560, version=2
> > > > -fssize=8g log      =internal log           bsize=4096   blocks=2560, version=2
> > > > -fssize=16g log      =internal log           bsize=4096   blocks=2560, version=2
> > > > -fssize=32g log      =internal log           bsize=4096   blocks=4096, version=2
> > > > -fssize=64g log      =internal log           bsize=4096   blocks=8192, version=2
> > > > +fssize=1g log      =internal log           bsize=4096   blocks=16384, version=2
> > > > +fssize=2g log      =internal log           bsize=4096   blocks=16384, version=2
> > > > +fssize=4g log      =internal log           bsize=4096   blocks=16384, version=2
> > > > +fssize=8g log      =internal log           bsize=4096   blocks=16384, version=2
> > > > +fssize=16g log      =internal log           bsize=4096   blocks=16384, version=2
> > > > +fssize=32g log      =internal log           bsize=4096   blocks=16384, version=2
> > > > +fssize=64g log      =internal log           bsize=4096   blocks=16384, version=2
> > > 
> > > So this will break downstream kernel testing too, except it follows this new
> > > xfs behavior change. Is it possible to get the minimal log size, then help to
> > > avoid the failure (if it won't mess up the code:)?
> > 
> > Hmm.  I suppose we could do a .out.XXX switcheroo type thing, though I
> > don't know of a good way to detect which mkfs behavior you've got.
> 
> Don't need to take much time to handle it :) How about use a specified filter function,
> filter all log blocks number <= 16384, if the number of blocks=$number <= 16384, transform
> it to blocks=* or what anything else do you like ?
> 
> I think we don't really care how much the log size less than 64M, right? Just hope it
> works (can be mounted and read/write)?

<shrug> Well I already reworked this patch to create 216.out.64mblog and
216.out.classic, and symlink them to 216.out as appropriate given the
log size for a 512m log format, since it probably *is* a good idea to
make sure older mkfs doesn't stray.

--D

> Thanks,
> Zorro
> 
> > 
> > --D
> > 
> > > 
> > > >  fssize=128g log      =internal log           bsize=4096   blocks=16384, version=2
> > > >  fssize=256g log      =internal log           bsize=4096   blocks=32768, version=2
> > > > 
> > > 
> > 
> 



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