Date: Fri, 12 Sep 1997 23:29:11 -0400 From: Brian Campbell <brianc@pobox.com> To: freebsd-hackers@FreeBSD.org Subject: ccd / newfs error Message-ID: <19970912232911.50519@pobox.com>
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Has anyone else had problems newfs'ing ccd filesystems? It works for some interleaves but not others. The newfs error message is less than informative. Is there a guideline for getting the best performance out of a filesytems (newfs/tunefs options) for reads vs writes, large vs small files, etc? Script started on Fri Sep 12 23:19:10 1997 # ccdconfig -v ccd0 64 0 /dev/sd0h /dev/sd1h ccd0: 2 components (sd0h, sd1h), 8369536 blocks interleaved at 64 blocks # newfs ccd0a Warning: 2688 sector(s) in last cylinder unallocated /dev/rccd0a: 8369536 sectors in 2044 cylinders of 1 tracks, 4096 sectors 4086.7MB in 128 cyl groups (16 c/g, 32.00MB/g, 7680 i/g) super-block backups (for fsck -b #) at: 32, 65568, 131104, 196640, 262176, 327712, 393248, 458784, 524320, 589856, 655392, 720928, 786464, 852000, 917536, ... # ccdconfig -u ccd0 # ccdconfig -v ccd0 128 0 /dev/sd0h /dev/sd1h ccd0: 2 components (sd0h, sd1h), 8369408 blocks interleaved at 128 blocks # newfs ccd0a write error: 8369535 wtfs: Invalid argument # ccdconfig -u ccd0 # ccdconfig -v ccd0 256 0 /dev/sd0h /dev/sd1h ccd0: 2 components (sd0h, sd1h), 8369152 blocks interleaved at 256 blocks # newfs ccd0a Warning: 2688 sector(s) in last cylinder unallocated /dev/rccd0a: 8369536 sectors in 2044 cylinders of 1 tracks, 4096 sectors 4086.7MB in 128 cyl groups (16 c/g, 32.00MB/g, 7680 i/g) super-block backups (for fsck -b #) at: 32, 65568, 131104, 196640, 262176, 327712, 393248, 458784, 524320, 589856, 655392, 720928, 786464, 852000, 917536, ... # ccdconfig -u ccd0 # ccdconfig -v ccd0 512 0 /dev/sd0h /dev/sd1h ccd0: 2 components (sd0h, sd1h), 8369152 blocks interleaved at 512 blocks # newfs ccd0a write error: 8369535 wtfs: Invalid argument # ccdconfig -u ccd0 Script done on Fri Sep 12 23:20:34 1997
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