newfs with `-m 1'
This is needed even with `-o space' as the kernel decides to be "helpful" and not really do space optimization. Looking at src/sys/ufs/ffs/ffs_alloc.c we see why: if (fs->fs_minfree <= 5 || fs->fs_cstotal.cs_nffree > (off_t)fs->fs_dsize * fs->fs_minfree / (2 * 100)) break; log(LOG_NOTICE, "%s: optimization changed from SPACE to TIME\n" I have picked `1' vs. `0' just incase some code somewhere has the assumption the %free can never be `0'. Helped with understanding why -m 1 made a different: imp
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=74005
@ -47,7 +47,7 @@ do
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fi
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fi
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disklabel -Brw /dev/${MDDEVICE} ${FSLABEL}
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newfs -i ${FSINODE} -T ${FSLABEL} -o space /dev/${MDDEVICE}c
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newfs -i ${FSINODE} -T ${FSLABEL} -o space -m 1 /dev/${MDDEVICE}c
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tunefs -m 0 /dev/${MDDEVICE}c
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mount /dev/${MDDEVICE}c ${MNT}
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