一、安装须知：
1. 我是在在32位OS下安装使用DiskSim
2. DiskSim使用lex和yacc进行词法及语法分析，故linux如没安装flex、bison的话，先要安装。
$ sudo apt-get install bison flex（前提是先联网）
3. 下载源码安装包
disksim 4.0:
http://www.pdl.cmu.edu/DiskSim/SSDextension:
http://research.microsoft.com/en-us/downloads/b41019e2-1d2b-44d8-b512-ba35ab814cd4/二、安装步骤
Step 1. Download and unzip.
Sources can be downloaded from the links above. I downloaded DiskSim 4.0 with dixtrac.
$ tar -zxvf disksim-4.0-with-dixtrac.tar.gz
$ cd disksim-4.0
$ unzip ../ssd-add-on.zip
Step 2. Apply SSD add on patch.
$ patch -p1 < ssdmodel/ssd-patch
Step 3. Modify Makefile to support math library
a. 修改memsmodel/Makefile：
进入disksim4.0/memsmodel目录，然后执行命令sudo vim Makefile
待修改的部分：
mems_seektest: mems_seektest.o libmems_internals.a
$(CC) -o $@ mems_seektest.o $(LDFLAGS) $(CFLAGS) -lmems_internals
我们将$(LDFLAGS)放置最后；
修改后的结果如下：
mems_seektest: mems_seektest.o libmems_internals.a
$(CC) -o $@ mems_seektest.o $(CFLAGS) -lmems_internals $(LDFLAGS)
b.修改dixtrac/Makefile：
进入disksim4.0/dixtrac目录，然后执行命令sudo vim Makefile
待修改的部分：
LDFLAGS = -L. -lm -l$(LIBNAME) -ldxtools \
$(LIBDISKSIM_LDFLAGS) \
$(MEMSMODEL_LDFLAGS) \
$(DISKMODEL_LDFLAGS) \
$(LIBPARAM_LDFLAGS) \
$(LIBDDBG_LDFLAGS) \
$(ST_LDFLAGS)
我们将-lm放置最后；
修改后的结果如下：
LDFLAGS = -L. -l$(LIBNAME) -ldxtools \
$(LIBDISKSIM_LDFLAGS) \
$(MEMSMODEL_LDFLAGS) \
$(DISKMODEL_LDFLAGS) \
$(SSDMODEL_LDFLAGS) \
$(LIBPARAM_LDFLAGS) \
$(LIBDDBG_LDFLAGS) \
$(ST_LDFLAGS) -lm
c.修改src/Makefile：
进入disksim4.0/src目录，然后执行命令sudo vim Makefile
待修改的部分：
LDFLAGS = -lm -L. -ldisksim $(DISKMODEL_LDFLAGS) $(MEMSMODEL_LDFLAGS) \
$(LIBPARAM_LDFLAGS) $(LIBDDBG_LDFLAGS)
我们将-lm放置最后；
修改后的结果如下：
LDFLAGS = -L. -ldisksim $(DISKMODEL_LDFLAGS) $(MEMSMODEL_LDFLAGS) \
$(SSDMODEL_LDFLAGS) \
$(LIBPARAM_LDFLAGS) $(LIBDDBG_LDFLAGS) -lm
Step 4. Append SSD model library path to dixtrac.
4.1 add these lines to dixtrac/.paths（将下面的六行代码复制到该文件的最底端）
#PATH TO SSDMODEL
export SSDMODEL_PREFIX=../ssdmodel
export SSDMODEL_INCL=$(SSDMODEL_PREFIX)/include
export SSDMODEL_CFLAGS=-I$(SSDMODEL_INCL)
export SSDMODEL_LDPATH=$(SSDMODEL_PREFIX)/lib
export SSDMODEL_LDFLAGS=-L$(SSDMODEL_LDPATH) -lssdmodel
4.2 修改dixtrac/Makefile文件 :
$(LIBDISKSIM_LDFLAGS)
$(MEMSMODEL_LDFLAGS)
$(DISKMODEL_LDFLAGS)
$(SSDMODEL_LDFLAGS) #（添加这一行内容）
$(LIBPARAM_LDFLAGS)
$(LIBDDBG_LDFLAGS)
$(ST_LDFLAGS)
CFLAGS = -Wall -g -MD -I. $(DEFINES) -I$(STHREADS) $(DMINCLUDES)
$(LIBDISKSIM_CFLAGS)
$(DISKMODEL_CFLAGS) $(LIBPARAM_CFLAGS) $(LIBDDBG_CFLAGS)
$(SSDMODEL_CFLAGS)#（添加这一行内容，注意使用tab键来对齐）
Step 5. Compile!（进入disksim4.0目录执行该命令）
$ make
注意：此时编译时提示出错，错误提示如下：
make[1]: 正在进入目录 `/home/liyongwei/liyongwei/DiskSim安装/disksim-4.0/dixtrac'
Makefile:68: *** commands commence before first target。 停止。
make[1]:正在离开目录 `/home/liyongwei/liyongwei/DiskSim安装/disksim-4.0/dixtrac'
make: *** [all] 错误 2
有篇文章说这种错误时由于修改时没有采用tab键对齐造成的，但是我检查之后发现我的修改没有错误，于是忽略这个错误提示，继续进行。（执行完该操作之后，在disksim/src/中会有一个名为disksim的可执行文件，代表编译成功）
Step 6. Check if it works well.
$ cd valid; ./runvalid
$ chmod a+x ../ssdmodel/valid/runvalid
$ cd ../ssdmodel/valid; ./runvalid
需等待段时间获得结果，结果如下：
—Running tests with the synthetic workload generator—
Sequential read (250K I/Os): average SSD response time should be around 0.132 ms
ssd Response time average: 0.132511
Sequential write (250K I/Os): average SSD response time should be around 0.310 ms
ssd Response time average: 0.310895
Sequential write (5M I/Os): average SSD response time should be around 0.334 ms
ssd Response time average: 0.334365
Random read (250K I/Os): average SSD response time should be around 0.136 ms
ssd Response time average: 0.136118
Random write (250K I/Os): average SSD response time should be around 0.329 ms
ssd Response time average: 0.329458
Random write (5M I/Os): average SSD response time should be around 0.593 ms
ssd Response time average: 0.593438
—Running tests with the real traces—
IOzone: average SSD response time should be around 6.394276 ms
ssd Response time average: 6.394276
Postmark: average SSD response time should be around 4.140330 ms
ssd Response time average: 4.140330
说明安装成功！
7.也可以进disksim4.0/valid/执行$ ./runvalid
部分结果如下：
These results represent actual drive validation experiments
QUANTUM_QM39100TD-SW (rms should be about 0.378)
rms = 0.377952
SEAGATE_ST32171W (rms should be about 0.349)
rms = 0.347570
SEAGATE_ST34501N (rms should be about 0.318)
rms = 0.317972
8.再做另外一个测试，
进入disksim-4.0/ssdmodel/valid/目录下，新建一个test.outv文件用于存放测试输出的结果。
运行示例（在disksim-4.0文件夹下执行下面的命令）：./src/disksim ./ssdmodel/valid/ssd-postmark.parv ./ssdmodel/valid/test.outv ascii ./ssdmodel/valid/ssd-postmark-aligned2.trace 0
等待结束后打开test.outv就会发现里面多了好多的数据，那就恭喜你了。