在 Sun 计算机上安装扩展存储器后，需要增加交换空间。SUN 建议将交换空间设置为存储容量的两倍。- 如果不想重新加载整个软件，在 Solaris 2.x 系统上请使用下列程序：
以“root”身份登录，针对以下选项使用“swap”命令：
# swap -s [ show the actual swap space and its usage ]
total:17888k bytes allocated + 10560k reserved = 28448k used,55804k available
# swap -l [ list all presently used swap space ]
swapfile dev swaplo blocks free
/dev/dsk/c0t3d0s1 32,25 8 132592 115800
# swap -a [ add new swap space ]
为此，需要首先找出能够增加扩展交换空间的位置。使用 "df -ak" 命令显示文件系统：
| # df -ak |
| Filesystem |
kbytes |
旧的 |
avail |
capacity |
Mounted on |
| /dev/dsk/c0t3d0s0 |
17063 |
9885 |
5478 |
64% |
/ |
| /dev/dsk/c0t3d0s6 |
373502 |
144266 |
191886 |
43% |
/usr |
| /proc |
0 |
0 |
0 |
0% |
/proc |
| fd |
0 |
0 |
0 |
0% |
/dev/fd |
| /dev/dsk/c0t3d0s4 |
28823 |
2092 |
23851 |
8% |
/var |
| swap |
53776 |
20 |
53756 |
0% |
/tmp |
| /dev/dsk/c0t0d0s2 |
963662 |
306875 |
560427 |
35% |
/export/home |
| /dev/dsk/c0t3d0s5 |
8383 |
6129 |
1424 |
81% |
/opt |
| -hosts |
0 |
0 |
0 |
0% |
/net |
| auto_home |
0 |
0 |
0 |
0% |
/home |
| g2000:vold(pid167) |
0 |
0 |
0 |
0% |
/vp¤ |
| # |
我们适当使用了 /export/home 的一些空间，结果导致您的主目录 (/export/home/vnmr1) 减少了相等的容量。在这一特定的示例中，还可使用 /usr 的一部分，因为仍然拥有 191886 kbyte 的可用空间，即使将来扩展，也不可能使用那么大的空间。
我们首先必须创建新的交换文件，这里将其称为 'swapexpand'，并针对该文件使用命令 'mkfile'（10m 意味着我们占用 10 MB）：
# mkfile -v 10m /export/home/swapexpand
/export/home/swapexpand 10485760 bytes
Do "df -ak" again to see how much is left in /export/home.
| # df -ak |
| Filesystem |
kbytes |
旧的 |
avail |
capacity |
Mounted on |
| /dev/dsk/c0t3d0s0 |
17063 |
9885 |
5478 |
64% |
/ |
| /dev/dsk/c0t3d0s6 |
373502 |
144266 |
191886 |
43% |
/usr |
| /proc |
0 |
0 |
0 |
0% |
/proc |
| fd |
0 |
0 |
0 |
0% |
/dev/fd |
| /dev/dsk/c0t3d0s4 |
28823 |
2092 |
23851 |
8% |
/var |
| swap |
53744 |
20 |
53724 |
0% |
/tmp |
| /dev/dsk/c0t0d0s2 |
963662 |
317124 |
550178 |
37% |
/export/home |
| /dev/dsk/c0t3d0s5 |
8383 |
6129 |
1424 |
81% |
/opt |
| -hosts |
0 |
0 |
0 |
0% |
/net |
| auto_home |
0 |
0 |
0 |
0% |
/home |
| g2000:vold(pid167) |
0 |
0 |
0 |
0% |
/vol |
| # |
现在需要激活该交换文件：使用
# swap -a /export/home/swapexpand
并再次运行：
| #swap -1 |
| swapfile |
dev |
swaplo |
blocks |
免费 |
| /dev/dsk/c0t3d0s1 |
32,25 |
8 |
131592 |
115800 |
| /export/home/swapexpand |
- |
8 |
20472 |
20472 |
Swapexpand has now become the new swap space expansion. However,this is now available only until the next boot. To make it available permanently, you need to make a new entry in vfstab:
| # more /etc/vfstab |
| #device |
device |
mount |
FS |
fsck |
mount |
mount |
| #to mount |
to fsck |
point |
type |
合格 |
at boot |
选件 |
| # |
| #/dev/dsk/c1d0s2 |
/dev/rdsk/c1d0s2 |
/usr |
ufs |
1 |
是 |
- |
| /proc |
- |
/proc |
proc |
- |
无 |
- |
| fd |
- |
/dev/fd |
fd |
- |
无 |
- |
| swap |
- |
/tmp |
tmpfs |
- |
是 |
- |
| /dev/dsk/c0t3d0s0 |
/dev/rdsk/c0t3d0s0 |
/ |
ufs |
1 |
无 |
- |
| /dev/dsk/c0t3d0s6 |
/dev/rdsk/c0t3d0s6 |
/usr |
ufs |
2 |
无 |
- |
| /dev/dsk/c0t3d0s4 |
/dev/rdsk/c0t3d0s4 |
/var |
ufs |
4 |
无 |
- |
| /dev/dsk/c0t0d0s2 |
/dev/rdsk/c0t0d0s2 |
/export/home |
ufs |
5 |
是 |
- |
| /dev/dsk/c0t3d0s5 |
/dev/rdsk/c0t3d0s5 |
/opt |
ufs |
6 |
是 |
- |
| /dev/dsk/c0t3d0s1 |
- |
- |
swap |
- |
无 |
- |
| # |
在该文件中添加一行：键入 'vi /etc/vfstab' 并添加：
/export/home/swapexpand - - swap - no -
Note: there are 7 entries per line! After rebooting the new swap space is available permanently.- If you lateron want to delete the swap expansion again, use:
# swap -d /export/home/swapexpand