Fuji inode problems
Paul Smith
paul at amos.ling.ucsd.edu
Thu Dec 1 18:19:01 AEST 1988
The problem of not being able to make enough inodes with fuji 23XX drives
and Xylogics controllers is due to a bug with mkfs. Using the -i option
to newfs will not correctly change the inode density for a partition, you
will always get the default 2048. The only way to get a higher inode
density is to reduce the number of cylinder groups and (!) the number of
tracks for that partition. This has the effect of giving you the same
number of nodes/cylinder group but each cylinder group is smaller hence
you've got more inodes. Of course you sacrifice some space too. The
following is what it looked like for us.
Script started on Thu Nov 17 11:57:48 1988
/*
* This is what the defaults yield
*/
bend# mkfs /dev/rxd1d 180900 67 27 8192 1024 16 10 60 2048 t 0
/dev/rxd1d: 180900 sectors in 100 cylinders of 27 tracks, 67 sectors
92.6Mb in 7 cyl groups (16 c/g, 14.82Mb/g, 2048 i/g)
super-block backups (for fsck -b#) at:
32, 29056, 58080, 87104, 116128, 145152, 174176,
bend# df -i /dev/rxd1d
Filesystem iused ifree %iused Mounted on
/dev/rxd1d 4 14332 0%
/*
* This is how to get more inodes
*/
bend# mkfs /dev/rxd1d 180900 67 26 8192 1024 8 10 60 2048 t 0
/dev/rxd1d: 180900 sectors in 104 cylinders of 26 tracks, 67 sectors
92.6Mb in 13 cyl groups (8 c/g, 7.14Mb/g, 2048 i/g)
super-block backups (for fsck -b#) at:
32, 14048, 28064, 42080, 56096, 70112, 84128, 98144, 112160, 126176,
140192, 154208, 168224,
bend# df -i /dev/rxd1d
Filesystem iused ifree %iused Mounted on
/dev/rxd1d 4 26620 0%
bend# exit
bend#
script done on Thu Nov 17 11:58:51 1988
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