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SWAP(1M-SysV) RISC/os Reference Manual SWAP(1M-SysV)
NAME
swap - swap administrative interface
SYNOPSIS
/etc/swap -a swapdev swaplow swaplen
/etc/swap -d swapdev swaplow
/etc/swap -l
DESCRIPTION
swap provides a method of adding, deleting, and monitoring
the system swap areas used by the memory manager. The fol-
lowing options are recognized:
-a Add the specified swap area. swapdev is
the name of the block special device,
e.g., /dev/dsk/1s0. swaplow is the
offset in 512-byte blocks into the dev-
ice where the swap area should begin.
swaplen is the length of the swap area
in 512-byte blocks. This option can
only be used by the super-user. Swap
areas are normally added by the system
start up routine /etc/rc when going into
multi-user mode.
-d Delete the specified swap area. swapdev
is the name of block special device,
e.g., /dev/dsk/1s0. swaplow is the
offset in 512-byte blocks into the dev-
ice where the swap area should begin.
Using this option marks the swap area as
"INDEL" (in process of being deleted).
The system will not allocate any new
blocks from the area, and will try to
free swap blocks from it. The area will
remain in use until all blocks from it
are freed. This option can only be used
by the super-user.
-l List the status of all the swap areas.
The output has four columns:
DEV The swapdev special file for the swap area if one
can be found in the /dev/dsk or /dev directories,
and its major/minor device number in decimal.
LOW The swaplow value for the area in 512-byte blocks.
LEN The swaplen value for the area in 512-byte blocks.
FREE The number of free 512-byte blocks in the area.
If the swap area is being deleted, this column
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SWAP(1M-SysV) RISC/os Reference Manual SWAP(1M-SysV)
will be marked INDEL.
WARNINGS
No check is done to see if a swap area being added overlaps
with an existing swap area or file system.
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