Red Hat安装虚拟带库

1、安装五个包

# yum -y install lzo-devel sg3_utils lsscsi mtx mt-st

mtx源码：http://sourceforge.net/

2、下载最新版的mhvtl

mhvtl-2014-09-07.tgz

3、编译内核模块

# cd mhvtl-1.5
# cd kernel
# make
# make install

4、创建mhvtl用户

# useradd -c "vitrual mhvtl" -M vtl

5、编译用户空间代码

# cd mhvtl-1.5
# make
# make install

6、修改权限，不修改启动不了mhvtl

# chown -R vtl:vtl /opt/mhvtl

/etc/mhvtl 是放配置文件的地方
/opt/mhvtl 是放模拟磁带文件的地方

7、建立配置文件

# service mhvtl

Could not locate library config file: /etc/mhvtl/library_contents.10
Creating a default one
Please stop mhvtl & edit /etc/mhvtl/library_contents.10 to suit your requirements

Could not locate library config file: /etc/mhvtl/library_contents.30
Creating a default one
Please stop mhvtl & edit /etc/mhvtl/library_contents.30 to suit your requirements
Usage: /etc/init.d/mhvtl {start|stop|shutdown}

8、查看配置文件

# cat /etc/mhvtl/mhvtl.conf 

# Home directory for config file(s)
MHVTL_CONFIG_PATH=/etc/mhvtl

# Default media capacity (500 M)    #磁带容量
CAPACITY=500

# Set default verbosity [0|1|2|3]
VERBOSE=1

# Set kernel module debuging [0|1]
VTL_DEBUG=0

9、启动mhvtl

# /etc/init.d/mhvtl start

10、查看虚拟带库状态信息(lsscsi)

# lsscsi -g 

[2:0:0:0]    disk    VMware,  VMware Virtual S 1.0   /dev/sda   /dev/sg0
[4:0:0:0]    cd/dvd  NECVMWar VMware SATA CD01 1.00  /dev/sr0   /dev/sg1
[33:0:0:0]   mediumx STK      L700             0105  /dev/sch0  /dev/sg10
[33:0:1:0]   tape    IBM      ULT3580-TD5      0105  /dev/st0   /dev/sg2
[33:0:2:0]   tape    IBM      ULT3580-TD5      0105  /dev/st1   /dev/sg3
[33:0:3:0]   tape    IBM      ULT3580-TD4      0105  /dev/st2   /dev/sg4
[33:0:4:0]   tape    IBM      ULT3580-TD4      0105  /dev/st3   /dev/sg5
[33:0:8:0]   mediumx STK      L80              0105  /dev/sch1  /dev/sg11
[33:0:9:0]   tape    STK      T10000B          0105  /dev/st4   /dev/sg6
[33:0:10:0]  tape    STK      T10000B          0105  /dev/st5   /dev/sg7
[33:0:11:0]  tape    STK      T10000B          0105  /dev/st6   /dev/sg8
[33:0:12:0]  tape    STK      T10000B          0105  /dev/st7   /dev/sg9

2个机械臂 (/dev/sg10和/dev/sg11)
8个驱动器

11、查看机械臂状态(mtx)

# mtx -f /dev/sg10 status

  Storage Changer /dev/sg10:4 Drives, 43 Slots ( 4 Import/Export )
Data Transfer Element 0:Empty
Data Transfer Element 1:Empty
Data Transfer Element 2:Empty
Data Transfer Element 3:Empty
      Storage Element 1:Full :VolumeTag=E01001L4                            
      Storage Element 2:Full :VolumeTag=E01002L4                            
      Storage Element 3:Full :VolumeTag=E01003L4                            
      Storage Element 4:Full :VolumeTag=E01004L4                            
      Storage Element 5:Full :VolumeTag=E01005L4                            
      Storage Element 6:Full :VolumeTag=E01006L4                            
      Storage Element 7:Full :VolumeTag=E01007L4                            
      Storage Element 8:Full :VolumeTag=E01008L4                            
      Storage Element 9:Full :VolumeTag=E01009L4                            
      Storage Element 10:Full :VolumeTag=E01010L4                            
      Storage Element 11:Full :VolumeTag=E01011L4                            
      Storage Element 12:Full :VolumeTag=E01012L4                            
      Storage Element 13:Full :VolumeTag=E01013L4                            
      Storage Element 14:Full :VolumeTag=E01014L4                            
      Storage Element 15:Full :VolumeTag=E01015L4                            
      Storage Element 16:Full :VolumeTag=E01016L4                            
      Storage Element 17:Full :VolumeTag=E01017L4                            
      Storage Element 18:Full :VolumeTag=E01018L4                            
      Storage Element 19:Full :VolumeTag=E01019L4                            
      Storage Element 20:Full :VolumeTag=E01020L4                            
      Storage Element 21:Empty
      Storage Element 22:Full :VolumeTag=CLN101L4                            
      Storage Element 23:Full :VolumeTag=CLN102L5                            
      Storage Element 24:Empty
      Storage Element 25:Empty
      Storage Element 26:Empty
      Storage Element 27:Empty
      Storage Element 28:Empty
      Storage Element 29:Empty
      Storage Element 30:Full :VolumeTag=F01030L5                            
      Storage Element 31:Full :VolumeTag=F01031L5                            
      Storage Element 32:Full :VolumeTag=F01032L5                            
      Storage Element 33:Full :VolumeTag=F01033L5                            
      Storage Element 34:Full :VolumeTag=F01034L5                            
      Storage Element 35:Full :VolumeTag=F01035L5                            
      Storage Element 36:Full :VolumeTag=F01036L5                            
      Storage Element 37:Full :VolumeTag=F01037L5                            
      Storage Element 38:Full :VolumeTag=F01038L5                            
      Storage Element 39:Full :VolumeTag=F01039L5                            
      Storage Element 40 IMPORT/EXPORT:Empty
      Storage Element 41 IMPORT/EXPORT:Empty
      Storage Element 42 IMPORT/EXPORT:Empty
      Storage Element 43 IMPORT/EXPORT:Empty

4个驱动器，43个槽位

12、 将1槽位的磁带放到0驱动器中(Media Changer Tools)

# mtx -f /dev/sg10 load 1 0
Loading media from Storage Element 1 into drive 0...done

# mtx -f /dev/sg10 status

  Storage Changer /dev/sg10:4 Drives, 43 Slots ( 4 Import/Export )
Data Transfer Element 0:Full (Storage Element 1 Loaded):VolumeTag = E01001L4                            
Data Transfer Element 1:Empty
Data Transfer Element 2:Empty
Data Transfer Element 3:Empty
      Storage Element 1:Empty
      Storage Element 2:Full :VolumeTag=E01002L4  

成功将磁带装入磁带驱动器中

13、查看st0状态(mt)

# mt -f /dev/st0 status

SCSI 2 tape drive:
File number=0, block number=0, partition=0.
Tape block size 0 bytes. Density code 0x46 (LTO-4).
Soft error count since last status=0
General status bits on (41010000):
 BOT ONLINE IM_REP_EN

装入磁带：

• File number=0
• DR_OPEN IM_REP_EN

未装磁带：

• File number=-1
• BOT ONLINE IM_REP_EN

14、检查驱动器中磁头的位置(tell)

# mt -f /dev/st0 tell
At block 0.

15、向磁带中写入数据(cvf)

# tar cvf /dev/st0 mhvtl-2014-09-07.tgz
mhvtl-2014-09-07.tgz
# mt -f /dev/st0 tell 
At block 0.

st打头的表示写入完成后会自动倒带，下次写入会覆盖之前的数据

# tar cvf /dev/nst0 mhvtl-2014-09-07.tgz
# mt -f /dev/nst0 tell 
At block 37.

nst打头的表示写入完成后不会自动倒带

# tar rvf /dev/st0 mhvtl-2014-09-07.tgz

继续写入数据(不覆盖前边的内容)

# tar -zcvf /dev/st0 mhvtl-2014-09-07.tgz

写入数据并使用gzip压缩

16、查看磁带数据(tvf)

# mt -f /dev/nst0 rewind    //倒带
# tar -tvf /dev/nst0
-rw-rw-r-- test/test    357615 2015-04-10 00:13 mhvtl-2014-09-07.tgz

# mt -f /dev/nst0 rewind
# mt -f /dev/nst0 fsf 1     //让磁头前进一个文件
# mt -f /dev/nst0 tell 
At block 37.

17、清除磁带内容(erase)

# mt -f /dev/nst0 rewind
# mt -f /dev/nst0 erase

18、卸载磁带库(unload)

# mtx -f /dev/sg10 unload 1 0
Unloading drive 0 into Storage Element 1...done