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LVMÊÇLogical Volume Manager(Âß¼­¾í¹ÜÀíÆ÷)µÄ¼òд£¬ËüΪÖ÷»úÌṩÁ˸ü¸ß²ã´ÎµÄ´ÅÅÌ´æ´¢¹ÜÀíÄÜÁ¦¡£LVM¿ÉÒÔ°ïÖúϵͳ¹ÜÀíԱΪӦÓÃÓëÓû§·½±ãµØ·ÖÅä´æ´¢¿Õ¼ä¡£ÔÚLVM¹ÜÀíϵÄÂß¼­¾í¿ÉÒÔ°´Ðè¸Ä±ä´óС»òÌí¼ÓÒÆ³ý¡£ÁíÍ⣬LVM¿ÉÒÔΪËù¹ÜÀíµÄÂß¼­¾íÌṩ¶¨ÖƵÄÃüÃû±êʶ¡£Òò´Ë£¬Ê¹ÓÃLVMÖ÷ÒªÊÇ·½±ãÁ˶Դ洢ϵͳµÄ¹ÜÀí£¬Ôö¼ÓÁËϵͳµÄÀ©Õ¹ÐÔ¡£
Ò»¡¢×¼±¸lvm»·¾³
1£®Ó²Å̵Ä×¼±¸
Ìí¼ÓÁËÒ»¿éÓ²ÅÌ/dev/hdb¡£
×¼±¸ÁËÈý¸ö·ÖÇø£¬·½°¸ÈçÏ£ºÈÝÁ¿Îª100M£¬½öΪÁËʵÑé×¼±¸¡£
/dev/hdb1
/dev/hdb2
/dev/hdb3
2£®×ª»»·ÖÇøÀàÐÍΪlvm¾í
fdisk /dev/hdb
tת»»Îªlvm¾íÀàÐÍ
Device Boot      Start    End      Blocks  Id  System
/dev/hdb1        1         208      98248+  8e  Linux LVM
/dev/hdb2        209      416      98280   8e  Linux LVM
/dev/hdb3        417      624      98280   8e  Linux LVM
È»ºów±£´æ²¢ÇÒ
#partprobe       /*ʹÓôÅÅÌ·ÖÇøÉúЧ*/
¶þ¡¢lvm´´½¨¹ý³Ì
1.´ÓÓ²ÅÌÇý¶¯Æ÷·ÖÇøÖд´½¨ÎïÀí¾í(physical volumes-PV)¡£
2.´ÓÎïÀí¾íÖд´½¨¾í×é(volume groups-VG)
3.´Ó¾í×éÖд´½¨Âß¼­¾í(logical volumes-LV)£¬²¢·ÖÅÉÂß¼­¾í¹ÒÔØµã£¬ÆäÖÐÖ»ÓÐÂß¼­¾í²Å¿ÉÒÔдÊý¾Ý¡£
lvmµÄ×î´óµÄÌØµã¾ÍÊÇ¿ÉÒÔ¶¯Ì¬µÄµ÷Õû·ÖÇøµÄ´óС£¬²¢ÇÒ¿ÉÒÔËæ×Å·ÖÇøÈÝÁ¿µÄÔö³¤¶øÔö¼Ó´ÅÅ̿ռäµÄÈÝÁ¿¡£
LVMÅäÖÃÓë´´½¨
Èý¡¢LVMµÄÎïÀí¾íPV
1£®Ïà¹ØÃüÁî
pvcreate  ´´½¨PV
pvscan    ɨÃèPV
pvdisplay ÏÔʾPV
pvremove  ɾ³ýPV
partprobe
2£®´´½¨ÎïÀí¾í
Èç¹ûÒÔÉÏÈÝÁ¿²»¹»£¬¿ÉÒÔÔÙÌí¼ÓÆäËü·ÖÇøµ½ÎïÀí¾íÖС£
[root@redhat ~]# pvcreate /dev/hdb1 /dev/hdb2
  Physical volume "/dev/hdb1" successfully created
  Physical volume "/dev/hdb2" successfully created
[root@redhat ~]# pvscan
  PV /dev/hdb1         lvm2 [95.95 MB


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