projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 4fd22aec C |
1 | .TH NEWFS 8 2/20/83 |
| 2 | .UC 4 | |
| 3 | .SH NAME | |
| 4 | newfs \- construct a new file system | |
| 5 | .SH SYNOPSIS | |
| 6 | .B /etc/newfs | |
| 7 | [ | |
| 8 | .B \-v | |
| 9 | ] [ | |
| 10 | .B mkfs-options | |
| 11 | ] | |
| 12 | .B special disk-type | |
| 13 | .SH DESCRIPTION | |
| 14 | .I Newfs | |
| 15 | is a ``friendly'' front-end to the | |
| 16 | .IR mkfs (8) | |
| 17 | program. | |
| 18 | .I Newfs | |
| 19 | will look up the type of disk a file system is | |
| 20 | being created on in the disk description | |
| 21 | file | |
| 22 | .IR /etc/disktab , | |
| 23 | calculate the appopriate | |
| 24 | parameters to use in calling | |
| 25 | .IR mkfs , | |
| 26 | then build the file system by forking | |
| 27 | .I mkfs | |
| 28 | and, if the file system is a root partition, | |
| 29 | install the necessary bootstrap programs | |
| 30 | in the initial 8 sectors of the device. | |
| 31 | .PP | |
| 32 | If the | |
| 33 | .B \-v | |
| 34 | option is supplied, | |
| 35 | .I newfs | |
| 36 | will print out its actions, including | |
| 37 | the parameters passed to | |
| 38 | .IR mkfs . | |
| 39 | .PP | |
| 40 | Options which may be used to override default | |
| 41 | parameters passed to | |
| 42 | .I mkfs | |
| 43 | are: | |
| 44 | .TP 10 | |
| 45 | .B \-s size | |
| 46 | The size of the file system in sectors. | |
| 47 | .TP 10 | |
| 48 | .B \-b block-size | |
| 49 | The block size of the file system in bytes. | |
| 50 | .TP 10 | |
| 51 | .B \-f frag-size | |
| 52 | The fragment size of the file system in bytes. | |
| 53 | .TP 10 | |
| 54 | .B \-t #tracks/cylinder | |
| 55 | .TP 10 | |
| 56 | .B \-c #cylinders/group | |
| 57 | The number of cylinders per cylinder group in a file system. | |
| 58 | The default value used is 16. | |
| 59 | .TP 10 | |
| 60 | .B \-m free space % | |
| 61 | The percentage of space reserved from normal users; the minimum | |
| 62 | free space threshhold. The default value used is 10%. | |
| 63 | .TP 10 | |
| 64 | .B \-r revolutions/minute | |
| 65 | The speed of the disk in revolutions per minute (normally 3600). | |
| 66 | .TP 10 | |
| 67 | .B \-S sector-size | |
| 68 | The size of a sector in bytes (almost never anything but 512). | |
| 69 | .FILES | |
| 70 | /etc/disktab for disk geometry and file system partition information | |
| 71 | .br | |
| 72 | /etc/mkfs to actually build the file system | |
| 73 | .br | |
| 74 | /usr/mdec for boot strapping programs | |
| 75 | .SH "SEE ALSO" | |
| 76 | fs(5), | |
| 77 | fsck(8), | |
| 78 | format(8) | |
| 79 | .PP | |
| 80 | McKusick, Joy, Leffler; "A Fast File System for Unix", | |
| 81 | Computer Systems Research Group, Dept of EECS, Berkeley, CA 94720; | |
| 82 | TR #7, September 1982. | |
| 83 | .SH BUGS | |
| 84 | Should figure out the type of the disk without the user's help. |