1MKFS.NILFS2(8) System Manager's Manual MKFS.NILFS2(8)
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6 mkfs.nilfs2 - create a NILFS2 filesystem
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9 mkfs -t nilfs2 [ -b block-size ] [ -B blocks-per-segment ] [ -c ] [ -L
10 volume-label ] [ -m reserved-segments-percentage ] [ -n ] [ -q ] [ -V ]
11 device
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13 mkfs.nilfs2 [ -b block-size ] [ -B blocks-per-segment ] [ -c ] [ -L
14 volume-label ] [ -m reserved-segments-percentage ] [ -n ] [ -q ] [ -V ]
15 device
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18 mkfs.nilfs2 is used to create a nilfs2 filesystem (usually in a disk
19 partition). device is the special file corresponding to the device
20 (e.g. /dev/sdXX). Usually mkfs.nilfs2 is invoked from the mkfs(8)
21 front-end program.
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23 The exit code returned by mkfs.nilfs2 is 0 on success and 1 on failure.
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26 -b block-size
27 Specify the size of blocks in bytes. The valid block size is
28 1024, 2048, 4096, 8192 bytes, ..., and the maximum block size is
29 restricted to the system page size. For most machines, it is
30 4096 bytes. The default block size is 4096 bytes.
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32 -B blocks-per-segment
33 Specify the number of blocks in a segment, where the segment
34 (also called full segment) is an allocation unit of disk space
35 of NILFS. This parameter gives the size of segment and conse‐
36 quently determines how many segments are aligned in the speci‐
37 fied device. The default number of blocks per segment is 2048
38 (= 8MB with 4KB blocks).
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40 -c Check the device for bad blocks before building the filesystem.
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42 -L new-volume-label
43 Set the volume label for the filesystem to new-volume-label.
44 The maximum length of the volume label is 16 bytes.
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46 -m reserved-segments-percentage
47 Specify the percentage of the segments reserved for garbage col‐
48 lection. The default percentage is 5%.
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50 -n Cause mkfs.nilfs2 to not actually create a filesystem, but dis‐
51 play what it would be do if it were to create a filesystem.
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53 -q Quiet execution. Useful if mkfs.nilfs2 is run in a script.
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55 -V Print the version number of mkfs.nilfs2 and exit.
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58 This version of mkfs.nilfs2 has been written by Ryusuke Konishi
59 <ryusuke@osrg.net>.
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62 mkfs.nilfs2 is part of the nilfs-utils package and is available from
63 http://www.nilfs.org.
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66 nilfs(8), mkfs(8), badblocks(8).
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70nilfs-utils version 2.0 May 2008 MKFS.NILFS2(8)