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有些 LVM Volume Group 不会在系统引导时激活。一旦系统被引导之后，这些 Volume Groups 可以从命令提示符下使用 vgchange 被激活，并且不会出现任何问题。
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如何能够解决这个问题?
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解决方法
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这个问题的解决方法可能应用最新的 LVM 补丁程序即可。?如果 LVM 最新没有安装补丁程序，则请安装一个最新的 Quality Pack patch bundle 或者从 ITRC 下载并安装 LVM 补丁程序及其相关补丁。
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如果应用补丁程序不能解决这个问题，则可以通过对 LVM Volume Group 的激活进程进行自定义来解决。
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Volume group 激活是由 /sbin/lvmrc? Script 完成的。
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/sbin/lvmrc 是由 /sbin/bcheckrc 调用的，后者会从/etc/inittab 中的下行内容运行:
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brc1::bootwait:/sbin/bcheckrc
/dev/console 2>&1 # fsck, etc.
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/sbin/lvmrc 运行 vgchange 命令激活这些 VG 时，可能有些 disks/lun尚未准备好。
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这个问题可以通过讒
远ㄒ?/etc/lvmrc 来自定义。请注意，更改是针对/etc/lvmrc 而不是针对 /sbin/lvmrc 的。
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在 /etc/lvmrc 中存在一些指导，其中解释了如何对其进行自定义。
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下面是一些必须的步骤。
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将 AUTO_VG_ACTIVATE 变量设置为 0:
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AUTO_VG_ACTIVATE=0
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接下来，自定义 custom_vg_acti?vation() 例程。添加一个 ioscan 命令来探询 vgchange 前面的所有设备，然后添加一个 parallel_vg_sync 来激活这些设备。例如，如果要激活vg00、vg01 和 vg02:
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custom_vg_activation()
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{
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/sbin/ioscan -fn > /etc/ioscan.out
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/sbin/vgchange -a y -s
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parallel_vg_sync "/dev/vg00 /dev/vg01 /dev/vg02"
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return 0
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}
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# /etc/lvmrc
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#
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# This file is sourced by /sbin/lvmrc. This file contains the flags
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# AUTO_VG_ACTIVATE and RESYNC which are required by the script in /sbin/lvmrc.
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# These flags must be set to valid values (see below).
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#
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#
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# The activation of Volume Groups may be customized by setting the
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# AUTO_VG_ACTIVATE flag to 0 and customizing the function
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# custom_vg_activation()
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#
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#
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# To disable automatic volume group activation,
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# set AUTO_VG_ACTIVATE to 0.
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#
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AUTO_VG_ACTIVATE=0
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#
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# The variable RESYNC controls the order in which
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# Volume Groups are resyncronized. Allowed values
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# are:
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# "PARALLEL" - resync all VGs at once.
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# "SERIAL" - resync VGs one at a time.
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#
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# SERIAL will take longer but will have less of an
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# impact on overall I/O performance.
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#
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RESYNC="SERIAL"
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#
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# Add customized volume group activation here.
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"lvmrc" 84 lines, 1981 characters
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# AUTO_VG_ACTIVATE flag to 0 and customizing the function
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# custom_vg_activation()
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#
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#
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# To disable automatic volume group activation,
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# set AUTO_VG_ACTIVATE to 0.
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#
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AUTO_VG_ACTIVATE=0
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#
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# The variable RESYNC controls the order in which
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# Volume Groups are resyncronized. Allowed values
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# are:
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# "PARALLEL" - resync all VGs at once.
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# "SERIAL" - resync VGs one at a time.
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#
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# SERIAL will take longer but will have less of an
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# impact on overall I/O performance.
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#
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RESYNC="SERIAL"
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#
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# Add customized volume group activation here.
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# A function is available that will synchronize all
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# volume groups in a list in parallel. It is
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# called parallel_vg_sync.
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#
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# This routine is only executed if AUTO_VG_ACTIVATE
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# equals 0.
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#
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――――――――――hnzzrk02：
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custom_vg_activation()
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{
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# e.g. /sbin/vgchange -a y -s
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/sbin/vgchange -a y -s
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parallel_vg_sync "/dev/intevg01"
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parallel_vg_sync "/dev/intevg02"
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parallel_vg_sync "/dev/intevg03"
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parallel_vg_sync "/dev/intevg04"
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parallel_vg_sync "/dev/intevg05"
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parallel_vg_sync "/dev/intevg06"
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parallel_vg_sync "/dev/intevg07"
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parallel_vg_sync "/dev/intevg08"
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parallel_vg_sync "/dev/intevg09"
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parallel_vg_sync "/dev/intevg10"
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parallel_vg_sync "/dev/unibilvg01"
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parallel_vg_sync "/dev/unibilvg02"
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# parallel_vg_sync "/dev/vg00 /dev/vg01"
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# parallel_vg_sync "/dev/vg02 /dev/vg03"
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return 0
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}
