HP_UX Bible ----- 第四部分unix系统管理(1)

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第四部分unix系统管理
A logical volume being contiguous means
A. all the physical extents are contiguous
B. all the logical extents are contiguous
C. you can never extend it
D. it can only be used for the root file system
@ b @
Note PEs may not be continuous. 在创建LV时用-c 参数指定是否contiguous
另外必须了解lvcreate命令的其它参数如-L -l -n -c
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An LVM physical volume is
A. a disk section with the LVM structures installed
B. a RAID device
C. a raw device
D. an entire disk with the LVM structures installed
@ d @
please refer the definition of pv H30641第8章的内容
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The fbackup utility makes use of a graphfile to :
A. record statistical information on backup performance
B. target those files potentially requiring backup
C. optimise on-line backups to minimise impact on active users
D. store IP addresses of other network machines in the backup group
@ b @
how to tell fbackup 命令备份对象是谁Two methods: one is with -i option,
another
is via graph file in which all the backup objects are included.
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The -B option on the pvcreate is used for
A. setting up spare or mirrored boot disks
B. setting up spare boot disks
C. defining bad blocks
D. allow the use of disks over 9Gb
@ b @
you should refer to the pvcreate command. Pvcreate命令可以带多参数个如
-B -f 意义是什么PV的结构是什么样的参阅H30641第8章
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An example of a valid \"mknod\" commands to create the group file would be
A. mknod group 64 c 0x0i0000
B. mknod group b 64 0x010000
C. mknod group c 64 0x01000
D. mknod group c 64 0x010000
@ d @
First of all, group file is a device file of volume group, its
characteristics is character. LVM device driver’s major number is 64, VG’s
minor number always looks like 0xnn0000.
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On HP-UX the file system, /stand must be loaded on a:
A. LVM volume
B. VXFS file system
C. Whole disk partition
D. HFS file system
@ d @
/stand as a HFS file system, reside on the LV of /dev/vg00/lvol1 用bdf
命令可以查看另外也可以查看/etc/fstab文件
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When a logical volume is created the following device files are
automatically made
A. block and character device files in the /dev/dsk and /dev/rdsk
directories
B. block and character device files in the volume group directory
C. none
D. group
@ b @
LV, like other physical device, also has device file in two forms: block
and raw. Both of them
Locate on its vg directory.
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The ____________ command will show currently mounted file systems, the
total size of each file system, the amount of space used from
each file system, and the amount of space available in each file system.
A. mount
B. bdf
C. du
D. ll
@ b @
The correct answer is: B. bdf
The df (disk free) command appeared in early UNIX to provide this
information. The Berkeley version of UNIX enhanced the df command such that
it’s output does not match that of the AT&T definition. HPUX is fully
compliant with the System-V Interface Definition and as such maintains the
older format of output for the df command. In order to provide HPUX
administrators with the convenience of the Berkeley version output we have
implemented it as bdf (berkley disk free).
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The steps needed to set up an active journal file system, Which is mounted
at boot time, are
A. create a new logical volume, use the newfs command with the -F jfs option,
mount the file system using the -F jfs option
B. create a new logical volume, use the newfs command with the -F vxfs option,
mount the file system using the -F vxfs option, add an entry into /etc/fstab
C. create a new logical volume, use the fsadm command with the -F vxfs option,
mount the file system using the -F vxfs option, add an entry into
/etc/vfstab
D. create a new logical volume with the -F vxfs option, mount the file system
using the -F xfs, option, add an entry into /etc/checklist
@ b @
the procedure of setup a journal file system is: first create a lv with
lvcreate , then create a vxfs file system with newfs -F vxfs, after that
mount the file system onto a directory. If you would like to prefer this
fs to be automatically mounted at boot time, add an entry into /etc/fstab.
OK!
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Is it possible to create a device file for a DAT drive forcing a specific
density rather than the default BEST option?
A. yes - use SAM
B. yes - use mksf specifying the -b option for a specific density
C. yes - use mknod specifying the major and minor numbers
D. yes - use any of the options shown
@ d @
there are several ways to create a device file : autoconfig, m knod, mksf,
sam, insf. Familiar with these command and the result.
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Patches are installed onto your system using:
A. patch_maker
B. swinstall
C. install
D. swcopy
@ b @
In HPUX, all softwares include patch are installed through SD.
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By default the vgcreate command on HPUX 10 does the following.
A. create the volume group, updates /etc/lvmtab, activates the volume group
and runs the vgcfgbackup command
B. create the volune group, updates /etc/lvmtab, activates the volume group
C. sets up the entries in /dev/vgxx
D. create the volume group
@ a @
pls refer to vgcreate command using online manual. You should familiar
with vgcreate vgdisplay vgextend vgcfgbackup /etc/lvmtab /etc/lvmconf
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When an update is made to a J FS file system mounted with the log option,:
A. all the metadata updates are recorded in an intent log transaction record
which is physically written to the intent log on the disk.
B. some metadata changes are written to disk immediately and others will
be written to disk when a sync is issued.
C. all the metadata and data updates are recorded in a single intent log
transaction record which is then flushed out to disk into the intent log.
D. all the metadata changes are written only when a sync is issued.
@ a @
The correct answer is: A. all the metadata updates are recorded in an intent
log transaction record which is physically written to the intent log on
the disk.
When a JFS file system is mounted with the log option, all transactions
which will modify metadata are logged to the physical file system before
control is passed back to the requesting process/thread (a physical write
to the intent log must be made before the process/thread may continue).
每一位考生需要了解VXFS HFS 文件系统更新的过程参阅9 17 和9 27
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vgreduce is used to
A. to remove physical volumes from volume groups
B. to get rid of a volume group
C. to remove the last physical volume from a volume group
D. remove one physical volume from a volume group leaving at least one
@
d @
vgreduce is used to reduce a vg, that means pv would be removed from the
vg but at least one pv should be left.