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linux file lock
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µ±¼Ómandatroy lockʱ£¬Èç¹ûÒÑÓнø³ÌÔÚÎļþÉϼÓÁË»¥³âËøa£¬ÄÇô½ø³Ì´´½¨µÄfile_lock b½á¹¹½«»á¼ÓÈëµ½aµÄµÈ´ýÁ´±íÖУ¬´Ëʱa½Ð×öblocker£¬b±»³ÆÎªwaiter¡£ÓÉÓÚ½ø³ÌÏëÒªµÄ×ÊÔ´£¨¼ÓËø£©ÎÞ·¨±»Âú×㣬ËùÒÔ½ø³ÌҪô±»×èÈû£¬½ø³ÌµÄÃèÊö·û±»¼ÓÈëµ½ bµÄµÈ´ýÁ´±íÖУ»ÒªÃ´ÏµÍ³µ÷ÓÃÖ±½Ó·µ»Ø´íÎó¡££¨È¡¾öÓÚµ÷ÓÃʱµÄflagÖµ£©


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¡¡¡¡[root@localhost yuanbor]#/sbin/vgrename [VG UUID] /dev/VolGroup01  #½«Öظ´µÄVG×é  ¸ù¾ÝUUID¸ÄΪ VolGroup01
¡¡¡¡[root@localhost yuanbor]# /sbin/pvs  #¼ì²é Ð޸Ľá¹û
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# cp test2 test
cp: cannot create regular file `test': Text file busy
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configure: error: Unable to find libgd.(a|so)
Èç¹ûʹÓõÄÊÇubuntu»òdebian¾ÍºÜ¼òµ¥ÁË£¬Ö±½Ósudo apt-get install apache2
libapache2-mod-php5 php5 php5-gd ¾Í»ù±¾Éϸ㶨£¬µ«ÊÇÓÃÔ´´úÂë°²×°»¹ÊǺÜÂé·³¡«
wget http://www.boutell.com/gd/http/gd-2.0.11.tar.gz
tar zxvf gd-2.0.11.tar.gz
cd gd-2.0.11
sudo . ......

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