svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
df_ufs(8)
df_ufs(8) System Administration Commands df_ufs(8)
NAME
df_ufs - report free disk space on ufs file systems
SYNOPSIS
df -F ufs [generic_options] [-o i] [directory | special]...
DESCRIPTION
The df command displays the amount of disk space occupied by ufs(4FS)
file systems, the amount of used and available space, and how much of
the file system's total capacity has been used. The amount of space re‐
ported as used and available is less than the amount of space in the
file system; this is because the system reserves a fraction of the
space in the file system to allow its file system allocation routines
to work well. The amount reserved is typically about 10%; this can be
adjusted using tunefs(8). When all the space on the file system except
for this reserve is in use, only the superuser can allocate new files
and data blocks to existing files. When the file system is overallo‐
cated in this way, df might report that the file system is more than
100% utilized.
If directory operands are specified, df displays information for the
filesystem containing each listed path. If special operands are speci‐
fied, df displays information for the filesystem stored on each speci‐
fied device, if any. If neither directory nor special operands are
specified, df displays information for all mounted file systems.
OPTIONS
The following options are supported:
generic_options
Options supported by the generic df command. See df(8) for a de‐
scription of these options.
-o
Specify ufs file system specific options. The available option is:
i Report the number of used and free inodes. This option can not
be used with generic_options.
FILES
/etc/mnttab list of file systems currently mounted
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Availabilitysystem/file-system/ufs
SEE ALSO
ufs(4FS), mnttab(5), attributes(7), df(8), fsck(8), fstyp(8), tunefs(8)
NOTES
df calculates its results differently for mounted and unmounted file
systems. For unmounted systems, the numbers reflect the 10% reserva‐
tion. This reservation is not reflected in df output for mounted file
systems. For this reason, the available space reported by the generic
command can differ from the available space reported by this module.
df might report remaining capacity even though syslog warns filesystem
full. This issue can occur because df only uses the available fragment
count to calculate available space, but the file system requires con‐
tiguous sets of fragments for most allocations.
If you suspect that you have exhausted contiguous fragments on your
file system, you can use the fstyp(8) utility with the -v option. In
the fstyp output, look at the nbfree (number of blocks free) and nffree
(number of fragments free) fields. On unmounted filesystems, you can
use fsck(8) and observe the last line of output, which reports, among
other items, the number of fragments and the degree of fragmentation.
See fsck(8).
Oracle Solaris 11.4 23 Jun 2025 df_ufs(8)