mkfs_hfs.1m (2010 09)

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mkfs_hfs(1M) mkfs_hfs(1M)

NAME

mkfs_hfs: mkfs - construct an HFS ﬁle system

SYNOPSIS

/usr/sbin/mkfs

[-F hfs][-d][-L

-S][-V][-o speciﬁc_options ] special

[size [nsect ntrack blksize fragsize ncpg minfree rps nbpi ]]

/usr/sbin/mkfs

[-d][-F hfs][-L

-S][-V][-o speciﬁc_options ]

special [proto [nsect ntrack blksize fragsize ncpg minfree rps nbpi]]

/usr/sbin/mkfs

[-F hfs][-m][-V

] special

Remarks

HFS ﬁle systems are normally created with the

newfs command (see newfs_hfs (1M)).

DESCRIPTION

The

mkfs command constructs an HFS ﬁle system by writing on the special ﬁle special . The

mkfs com-

mand builds the ﬁle system with a root directory and a

lost+found directory (see fsck_hfs (1M)). The

FS_CLEAN magic number for the ﬁle system is stored in the superblock.

The

mkfs command creates the ﬁle system with a rotational delay value of zero (see tunefs (1M)).

Options

mkfs recognizes the following options:

-F hfs Specify the HFS ﬁle system type.

-d This option allows the mkfs command to make the new ﬁle system in an ordinary

ﬁle. In this case, special is the name of an existing ﬁle in which to create the ﬁle

system. When this option is used, the size of the new ﬁle system cannot be

defaulted. It must either be speciﬁed on the command line following special ,orifa

prototype ﬁle is being used, it must be the second token in the prototype ﬁle as

usual.

-L-S There are two types of HFS ﬁle systems, distinguished mainly by directory formats

that place different limits on the length of ﬁle names.

-L is speciﬁed, build a long-ﬁle-name ﬁle system that allows directory entries (ﬁle

names) to be up to MAXNAMLEN (255) bytes long.

-S is speciﬁed, build a short-ﬁle-name ﬁle system that allows directory entries

(ﬁle names) to be up to DIRSIZ (14) bytes long.

If neither

-L nor -S is speciﬁed, build a ﬁle system of the same type as the root ﬁle

system.

-m Display the command line that was used to create the ﬁle system. The ﬁle system

must already exist. This option provides a means to determine the parameters used

to construct the ﬁle system.

-V Echo the completed command line, but perform no other action. The command line

is generated by incorporating the user-speciﬁed options and other information

derived from /etc/fstab. This option allows the user to verify the command

line.

-o specific_options

Specify a list of comma separated suboptions and/or keyword/attribute pairs from

the list below.

largefiles|nolargefiles

Controls the largeﬁle featurebit for the ﬁle system. The default is nolargefiles. This

means the bit is not set, and ﬁles created on the ﬁle system will be limited to less than 2 giga-

bytes in size. If largefiles is speciﬁed, the bit is set and the maximum size for ﬁles

created on the ﬁle system is not limited to 2 gigabytes (see mount_hfs (1M) and

fsadm_hfs (1M)).

Arguments

mkfs recognizes the following arguments:

HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1

Summary of content (4 pages)

PAGE 1
mkfs_hfs(1M) mkfs_hfs(1M) NAME mkfs_hfs: mkfs - construct an HFS file system SYNOPSIS /usr/sbin/mkfs [-F hfs] [-d] [-L-S] [-V] [-o specific_options ] special [size [nsect ntrack blksize fragsize ncpg minfree rps nbpi ] ] /usr/sbin/mkfs [-d] [-F hfs] [-L-S] [-V] [-o specific_options ] special [proto [nsect ntrack blksize fragsize ncpg minfree rps nbpi ] ] /usr/sbin/mkfs [-F hfs] [-m] [-V] special Remarks HFS file systems are normally created with the newfs command (see newfs_hfs (1M)).
PAGE 2
mkfs_hfs(1M) special mkfs_hfs(1M) The file name of a special file. One of the following arguments can be included after special : size The number of DEV_BSIZE blocks in the file system. DEV_BSIZE is defined in . The default value is the size of the entire disk or disk section minus any swap or boot space requested. The size of HFS file systems are limited to 256GB-1 or 268,435,455 blocks. proto The name of a file that can be opened.
PAGE 3
mkfs_hfs(1M) mkfs_hfs(1M) A mode token is a 6-character string. The first character specifies the type of the file. It can be one of the following characters: b c d l L Regular file Block special file Character special file Directory Symbolic link Hard link The second character of a mode token is either u or - to specify set-user-ID mode or not. The third character of a mode token is either g or - to specify the set-group-ID mode or not.
PAGE 4
mkfs_hfs(1M) mkfs_hfs(1M) sendmail -ug555 root $ mail /usr/sbin/sendmail $ $ Access Control Lists Every file with one or more optional ACL entries consumes an extra (continuation) inode. If you anticipate significant use of ACLs on a new file system, you can allocate more inodes by reducing the value of nbpi appropriately. The small default value typically causes allocation of many more inodes than are actually necessary, even with ACLs.