尝试执行了，等待结果……作者: 滑翔的蜗牛 时间: 2010-01-14 14:21
找到资料了，贴上来一起分享
Performing online relayout
You can use the vxassist relayout command to reconfigure the layout of a
volume without taking it offline. The general form of this command is:
# vxassist [-b] [-g diskgroup] relayout volume [layout=layout] \
[relayout_options]
If specified, the -b option makes relayout of the volume a background task.
The following destination layout configurations are supported.
concat-mirror concatenated-mirror
concat concatenated
nomirror concatenated
nostripe concatenated
raid5 RAID-5 (not supported for shared disk groups)
span concatenated
stripe striped作者: 滑翔的蜗牛 时间: 2010-01-14 14:24
继续
Specifying a non-default layout
You can specify one or more relayout options to change the default layout
configuration. The following are examples of using these options:
ncol=number Specifies the number of columns.
ncol=+number Specifies the number of columns to add.
ncol=-number Specifies the number of colums to remove.
stripeunit=size Specifies the stripe width.
See the vxassist(1M) manual page.
The following are some examples of using vxassist to change the stripe width and
number of columns for a striped volume in the disk group dbaseg:
# vxassist -g dbaseg relayout vol03 stripeunit=64k ncol=6
# vxassist -g dbaseg relayout vol03 ncol=+2
# vxassist -g dbaseg relayout vol03 stripeunit=128k
The next example changes a concatenated volume to a RAID-5 volume with four
columns:
# vxassist -g fsgrp relayout vol04 layout=raid5 ncol=4作者: 滑翔的蜗牛 时间: 2010-01-14 14:30 标题: 完成50%了 #vxrelayout -g datadg status datavol
STRIPED, columns=2, stwidth=128 --> STRIPED, columns=3, stwidth=128
Relayout running, 50.00% completed.作者: 滑翔的蜗牛 时间: 2010-01-14 14:32 标题: Viewing the status of a relayout 继续学习
Online relayout operations take some time to perform. You can use the vxrelayout
command to obtain information about the status of a relayout operation. For
example, the command:
# vxrelayout -g mydg status vol04
might display output similar to this:
STRIPED, columns=5, stwidth=128--> STRIPED, columns=6,
stwidth=128
Relayout running, 68.58% completed.
In this example, the reconfiguration of a striped volume from 5 to 6 columns is
in progress, and is just over two-thirds complete.
See the vxrelayout(1M) manual page.
If you specified a task tag to vxassist when you started the relayout, you can use
this tag with the vxtask command to monitor the progress of the relayout. For
example, to monitor the task tagged as myconv, enter:
# vxtask monitor myconv作者: 滑翔的蜗牛 时间: 2010-01-14 14:39 标题: Controlling the progress of a relayout You can use the vxtask command to stop (pause) the relayout temporarily, or to
cancel it altogether (abort). If you specified a task tag to vxassist when you
started the relayout, you can use this tag to specify the task to vxtask. For example,
to pause the relayout operation tagged as myconv, enter:
# vxtask pause myconv
To resume the operation, use the vxtask command:
# vxtask resume myconv
For relayout operations that have not been stopped using the vxtask pause
command (for example, the vxtask abort command was used to stop the task,
the transformation process died, or there was an I/O failure), resume the relayout
by specifying the start keyword to vxrelayout, as shown here:
# vxrelayout -g mydg -o bg start vol04
If you use the vxrelayout start command to restart a relayout that you previously
suspended using the vxtask pause command, a new untagged task is created to
complete the operation. You cannot then use the original task tag to control the
relayout.
The -o bg option restarts the relayout in the background. You can also specify
the slow and iosize option modifiers to control the speed of the relayout and the
size of each region that is copied. For example, the following command inserts a
delay of 1000 milliseconds (1 second) between copying each 10-megabyte region:
# vxrelayout -g mydg -o bg,slow=1000,iosize=10m start vol04
The default delay and region size values are 250 milliseconds and 1 megabyte
respectively.
To reverse the direction of relayout operation that is currently stopped, specify
the reverse keyword to vxrelayout as shown in this example:
# vxrelayout -g mydg -o bg reverse vol04
This undoes changes made to the volume so far, and returns it to its original
layout.
If you cancel a relayout using vxtask abort, the direction of the conversion is
also reversed, and the volume is returned to its original configuration.
See “Managing tasks with vxtask” on page 324.
See the vxrelayout(1M) manual page.
See the vxtask(1M) manual page.作者: 滑翔的蜗牛 时间: 2010-01-15 09:36
扩展前后对比：
扩展前：
#vxprint -g datadg datavol
TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0
v datavol fsgen ENABLED 104857600 - ACTIVE - -
pl datavol-01 datavol ENABLED 104857600 - ACTIVE - -
sd datadg01-02 datavol-01 ENABLED 52428800 0 - - -
sd datadg02-02 datavol-01 ENABLED 52428800 0 - - -
