Re: [PATCH 1/2] common/rc: Enable _format_swapfile to return the swap size

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> > +	# return created swap size
> > +	echo $swap_log | grep -oP '(?<=size = )\w+'
> 

Hi Zorro.

> I saw you've changed generic/643 to suit this change, but there're many cases
> call _format_swapfile() [1], now it print something to stdout by default, did
> you make sure it won't break other cases' golden image?

Yes, I did change generic/643 to use the value returned by _format_swapfile(). I
did test a few other tests which use _format_swapfile(), just in case, and they
passed normally for me, that's why I added the following comment to my patch's
description:

--
Tests using _format_swapfile() that do not require the swap file size do not
need to be modified, as the return value will be simply ignored.
--

Did you find something failing that wasn't supposed to? If not, I'll try to
rephrase that above on my V2, to be a bit more clear.

Thanks for the review!
Cheers.

> 
> Thanks,
> Zorro
> 
> [1]
> $ grep -rsn _format_swapfile tests/
> tests/btrfs/173:22:# We can't use _format_swapfile because we don't want chattr +C, and we can't
> tests/btrfs/173:34:_format_swapfile "$SCRATCH_MNT/swap" $(($(get_page_size) * 10))
> tests/btrfs/177:66:_format_swapfile "$swapfile" $((32 * 1024 * 1024))
> tests/btrfs/174:23:_format_swapfile "$swapfile" $(($(get_page_size) * 10))
> tests/btrfs/175:21:     _format_swapfile "$SCRATCH_MNT/swap" "$sz"
> tests/btrfs/175:50:_format_swapfile "$SCRATCH_MNT/swap" $(($(get_page_size) * 10))
> tests/btrfs/176:32:_format_swapfile "$SCRATCH_MNT/swap" $(($(get_page_size) * 10))
> tests/btrfs/176:50:_format_swapfile "$SCRATCH_MNT/swap" $(($(get_page_size) * 10))
> tests/generic/643:39:_format_swapfile $swapfile 1m >> $seqres.full
> tests/generic/357:42:_format_swapfile "$testdir/file1" $((blocks * blksz))
> tests/generic/493:30:_format_swapfile "$testdir/file1" $((blocks * blksz))
> tests/generic/494:29:_format_swapfile "$testdir/file1" $((blocks * blksz))
> tests/generic/356:42:_format_swapfile "$testdir/file1" $((blocks * blksz))
> tests/generic/569:34:_format_swapfile $testfile 20m
> tests/generic/495:24:# We can't use _format_swapfile because we're using our custom mkswap and
> tests/generic/554:33:_format_swapfile $SCRATCH_MNT/swapfile 16m
> 
> >  }
> >  
> >  _swapon_file() {
> > @@ -2628,7 +2632,7 @@ _require_scratch_swapfile()
> >  	_scratch_mount
> >  
> >  	# Minimum size for mkswap is 10 pages
> > -	_format_swapfile "$SCRATCH_MNT/swap" $(($(get_page_size) * 10))
> > +	_format_swapfile "$SCRATCH_MNT/swap" $(($(get_page_size) * 10)) > /dev/null
> >  
> >  	# ext* has supported all variants of swap files since their
> >  	# introduction, so swapon should not fail.
> > -- 
> > 2.31.1
> > 
> 

-- 
Carlos




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