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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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| write_mfs_in_kernel.c | ||