December 2010

ERROR: no PST quorum in group: required 2, found 0

今天在Xdata上犯了个小错误。。上午忙活了半天
几个DG一直没办法MOUNT，显示问题很难看。只觉得是disk missing 又没说具体哪个disk，
然后 mount force也不顶用。

SQL&gt;   ALTER DISKGROUP high  MOUNT force
NOTE: cache registered group HIGH number=1 incarn=0x9679682f
NOTE: cache began mount (first) of group HIGH number=1
       incarn=0x9679682f
Sun Dec 26 22:01:38 2010
ERROR: no PST quorum in group: required 2, found 0
NOTE: cache dismounting (not clean) group 1/0x9679682F (HIGH)
NOTE: dbwr not being msg'd to dismount
NOTE: lgwr not being msg'd to dismount
NOTE: cache dismounted group 1/0x9679682F (HIGH)
NOTE: cache ending mount (fail) of group HIGH number=1
       incarn=0x9679682f
NOTE: cache deleting context for group HIGH 1/0x9679682f
GMON dismounting group 1 at 31 for pid 29, osid 19112
ERROR: diskgroup HIGH was not mounted
ORA-15032: not all alterations performed
ORA-15017: diskgroup "HIGH" cannot be mounted
ORA-15063: ASM discovered an insufficient number
           of disks for diskgroup "HIGH"
ERROR:   ALTER DISKGROUP high  MOUNT force

SQL> ALTER DISKGROUP high MOUNT force

NOTE: cache registered group HIGH number=1 incarn=0x9679682f

NOTE: cache began mount (first) of group HIGH number=1

incarn=0x9679682f

Sun Dec 26 22:01:38 2010

ERROR: no PST quorum in group: required 2, found 0

NOTE: cache dismounting (not clean) group 1/0x9679682F (HIGH)

NOTE: dbwr not being msg'd to dismount

NOTE: lgwr not being msg'd to dismount

NOTE: cache dismounted group 1/0x9679682F (HIGH)

NOTE: cache ending mount (fail) of group HIGH number=1

incarn=0x9679682f

NOTE: cache deleting context for group HIGH 1/0x9679682f

GMON dismounting group 1 at 31 for pid 29, osid 19112

ERROR: diskgroup HIGH was not mounted

ORA-15032: not all alterations performed

ORA-15017: diskgroup "HIGH" cannot be mounted

ORA-15063: ASM discovered an insufficient number

of disks for diskgroup "HIGH"

ERROR: ALTER DISKGROUP high MOUNT force

找了半天发现是重启instance时候不小心，discovery_string改掉了，
是我以前本用来建OCRVD时候，DG太多用来过滤的，于是只好改了回来。。

 asm_diskstring           = "/o/*/PCW_CD_01*"
 ...
 ALTER SYSTEM SET asm_diskstring='/o/*/*' SCOPE=BOTH SID='*';

asm_diskstring = "/o/*/PCW_CD_01*"

...

ALTER SYSTEM SET asm_diskstring='/o/*/*' SCOPE=BOTH SID='*';

然后mount就一切顺利了。。。看来有时候小细节不能忽视啊。。

HL Twitter手动调整显示时间

因为主页上面HL Twitter显示时间经常不准
显示Thread时间都会差8个小时

这是我的SP和我本地北京时间的差距,
不管他,就手动去调了一下时针

Editing hl-twitter/hl_twitter.php (active)
add following line at the beginning, following “<?php” tag:

date_default_timezone_set('America/Los_Angeles');

1	date_default_timezone_set('America/Los_Angeles');

把HL要用的时区往前拨了8个钟..不管他…我只要CST访问看着正常就好了
至于到了夏令时,估计也没问题…再改呗

VM: Raising runtime error ‘HostMemoryLow’

今天准备把本地的VirtualBox从3.2升级到4

因为官网F11没有对应VBox4的rpm，所以只能用General Binary来安装
原来的OEL5 Unbreakable镜像拿过来还是有问题的，除了之前的IOAPIC，还有USB禁用
不断地出现有Vos Paused很麻烦，提示Memory过低。
问题应当是给Vos分配了过高的内存，可是我之前3.2版本的没问题..

[Solution/Wr]:
调低Virtual OS分配的内存，具体调多低。。多试几次一直到Error不再发生即可

00:05:48.414 GMM: Statistics:
00:05:48.414      Allocated pages: 1d9d1
00:05:48.414      Maximum   pages: 3d79e
00:05:48.414      Ballooned pages: 0
00:05:48.415
VM: Raising runtime error 'HostMemoryLow' (fFlags=0x2)
00:05:48.415
Changing the VM state from 'RUNNING' to 'SUSPENDING'.
00:05:48.741
Changing the VM state from 'SUSPENDING' to 'SUSPENDED'.
00:05:48.742
Console: VM runtime error: fatal=false, errorID=HostMemoryLow
message="Unable to allocate and lock memory.
The virtual machine will be paused.
Please close applications to free up memory or close the VM"

00:05:48.414 GMM: Statistics:

00:05:48.414 Allocated pages: 1d9d1

00:05:48.414 Maximum pages: 3d79e

00:05:48.414 Ballooned pages: 0

00:05:48.415

VM: Raising runtime error 'HostMemoryLow' (fFlags=0x2)

00:05:48.415

Changing the VM state from 'RUNNING' to 'SUSPENDING'.

00:05:48.741

Changing the VM state from 'SUSPENDING' to 'SUSPENDED'.

00:05:48.742

Console: VM runtime error: fatal=false, errorID=HostMemoryLow

message="Unable to allocate and lock memory.

The virtual machine will be paused.

Please close applications to free up memory or close the VM"

sdf

New update: Fri Dec 24 17:54:15 CST 2010
放弃更新至VBox4.0，回到VBox3.2

error: invalid Python installation: unable to open /usr/lib/python2.6/config/Makefile (No such file or directory)

Updating VirtualBox on Fedora.11
Fetch from VBox Download page,
VirtualBox-4.0.0-69151-Linux_x86.run

[root@suse-pc tmp]# sh ./*run
Verifying archive integrity... All good.
Uncompressing VirtualBox for Linux installation..........
VirtualBox Version 4.0.0r69151(2010-12-22T14:24:16Z) installer
Installing VirtualBox to /opt/VirtualBox
Python found: python, installing bindings...
error: invalid Python installation: unable to open
 /usr/lib/python2.6/config/Makefile (No such file or directory)
Building the VirtualBox kernel modules

VirtualBox has been installed successfully.

You will find useful information about using VirtualBox
in the user manual
  /opt/VirtualBox/UserManual.pdf
and in the user FAQ
  http://www.virtualbox.org/wiki/User_FAQ

We hope that you enjoy using VirtualBox.

[root@suse-pc tmp]# sh ./*run

Verifying archive integrity... All good.

Uncompressing VirtualBox for Linux installation..........

VirtualBox Version 4.0.0r69151(2010-12-22T14:24:16Z) installer

Installing VirtualBox to /opt/VirtualBox

Python found: python, installing bindings...

error: invalid Python installation: unable to open

/usr/lib/python2.6/config/Makefile (No such file or directory)

Building the VirtualBox kernel modules

VirtualBox has been installed successfully.

You will find useful information about using VirtualBox

in the user manual

/opt/VirtualBox/UserManual.pdf

and in the user FAQ

http://www.virtualbox.org/wiki/User_FAQ

We hope that you enjoy using VirtualBox.

Error about python installation,
fix:

yum install python-devel

1	yum install python-devel

tar: Removing leading `/’ from member names

最近一直不在意一处WARNING,到是仔细看了才觉得应该记下来。
当tar选択绝对路径(Absolute Path)而非相对路径(Relative Path)时候，
tar会报WARNING,默认去除root符号

这算是一种安全策略吧，Linux有时候设计就是这样，可以理解，但比较生硬
因为tar有时候只是为了备份还原，有时候只是简单的打包。
这种默认的设置还真有点意思

[root@vm user]# tar -cjvf /tmp/atest.tar.gz /tmp/libs.pm
tar: Removing leading `/' from member names
/tmp/libs.pm

[root@vm user]# tar -cjvf /tmp/atest.tar.gz /tmp/libs.pm

tar: Removing leading `/' from member names

/tmp/libs.pm

如果想保留/记号的话，比如tar备份 /etc/grub.conf，那么在解包时候
无论tar包位置如何，都会解压覆盖原/etc/grub.conf

-P, --absolute-names       
     don't strip leading `/'s from file names

1 2	-P, --absolute-names don't strip leading `/'s from file names