Linux root directory expansion

Source: Internet
Author: User

1. View the newly added disks as follows:/DEV/SDE for newly added disks   The following script can be used to scanEcho '---' >/sys/class/scsi_host/host0/scan  [[email protected] ~]# fdisk-l disk/dev/sda:21.5 GB, 21474836480 bytes255 heads, sectors/track, 2610 Cylin Dersunits = Cylinders of 16065 * 8225280 bytessector size (logical/physical): bytes/512 bytesi/o Size (minimum /optimal): bytes/512 bytesdisk identifier:0x00028c6a    device boot      Start         End      blocks   Id  system/dev/sda1   *           1          26      204800   83  L Inuxpartition 1 does not end on cylinder boundary./dev/sda2              26  &nbsp ;     2611    20765696   8e  Linux lvm disk/dev/sde:8589 MB, 8589934592 bytes255 H EADS, Sectors/track, 1044 cylindersunits = cylinders of 16065 * = 8225280 bytessector size (logical/physical): 512 bytes/512 bytesi/o Size (miNimum/optimal): bytes/512 bytesdisk identifier:0x00000000  disk/dev/mapper/vg_rac01-logvol01:12.7 GB, 12670992384 bytes255 heads, sectors/track, 1540 cylindersunits = cylinders of 16065 * MB = 8225280 bytessector size (l ogical/physical): bytes/512 bytesi/o size (minimum/optimal): bytes/512 bytesdisk identifier:0x00000000 & nbsp;disk/dev/mapper/vg_rac01-logvol00:8589 MB, 8589934592 bytes255 heads, sectors/track, 1044 cylindersunits = Cylin DERs of 16065 * 8225280 = bytessector size (logical/physical): bytes/512 bytesi/o size (minimum/optimal): by tes/512 Bytesdisk identifier:0x00000000  2. Partition the disk, divide it into a primary partition, and create a PV[Email protected] ~]# Fdisk/dev/sdedevice contains neither a valid DOS partition table, nor Sun, SGI or OSF Disklabelbui Lding a new DOS disklabel with disk identifier 0X6751FD38. Changes'll remain in memory only, until the decide to write them. After that, of course, the previous content won ' t is recoverable. Warning:invalid flag 0x0000 of partition Table 4 would be a corrected by W (rite) warning:dos-compatible mode is deprecated. It ' s strongly recommended to switch off the mode (command ' C ') and change display units to sectors (comma nd ' u '). Command (M for help): N #n为新建一个分区Command Action E Extended P primary partition (1-4) p #p为新建一个primary partition, which is the primary partitionPartition number (1-4): Value out of range. Partition number (1-4): 1 #分区序号为1First cylinder (1-1044, default 1): #默认从第一个柱面开始Using default value 1Last cylinder, +cylinders or +size{k,m,g} (1-1044, default 1044): #默认到最后一个柱面结束Using Default Value 1044 Command (M for help): t #改变分区格式为8e linux LVM Logical Volume formatSelected partition 1Hex code (type L to list codes): 8e Changed System type of partition 1 to 8e (Linux LVM)Command (M for help): W #保存退出The partition table has been altered! Calling IOCTL () to re-read partition table. Syncing disks. 3. View the creation situation[[email protected] ~]# fdisk-l disk/dev/sda:21.5 GB, 21474836480 bytes255 heads, sectors/track, 2610 Cylin Dersunits = Cylinders of 16065 * 8225280 bytessector size (logical/physical): bytes/512 bytesi/o Size (minimum /optimal): bytes/512 bytesdisk identifier:0x00028c6a    device boot      Start         End      blocks   Id  system/dev/sda1   *           1          26      204800   83  L Inuxpartition 1 does not end on cylinder boundary./dev/sda2              26  &nbsp ;     2611    20765696   8e  Linux lvm disk/dev/sde:8589 MB, 8589934592 bytes255 H EADS, Sectors/track, 1044 cylindersunits = cylinders of 16065 * = 8225280 bytessector size (logical/physical): 512 bytes/512 bytesi/o Size (miNimum/optimal): bytes/512 bytesdisk identifier:0x6751fd38    device Boot      START&N Bsp        End      blocks   Id  system/dev/sde1               1        1044     8385898+  8e  Linux Lvm di sk/dev/mapper/vg_rac01-logvol01:12.7 GB, 12670992384 bytes255 heads, sectors/track, 1540 cylindersunits = cylinders O F 16065 * = 8225280 bytessector size (logical/physical): bytes/512 bytesi/o size (minimum/optimal): Bytes/ Bytesdisk identifier:0x00000000 disk/dev/mapper/vg_rac01-logvol00:8589 MB, 8589934592 bytes255 heads, sect Ors/track, 1044 cylindersunits = cylinders of 16065 * MB = 8225280 bytessector size (logical/physical): bytes/512 b YTESI/O size (minimum/optimal): bytes/512 bytesdisk identifier:0x00000000  4. Create a physical volume group[Email protected] ~]# pvcreate/dev/sde1 physical Volume "/dev/sde1" successfully created[[email protected] ~]# Pvdispla Y #查看物理卷组情况 ---Physical volume---  PV name               /dev/sda2  VG Name                vg_rac01  PV Size             &N Bsp    19.80 gib/not usable 3.00 mib  allocatable             Yes (but full) &NB Sp PE Size                   4.00 mib  Total PE                 5069  free PE                  0  Allo cated pe          5069  PV uuid               vhmlej -baqh-yugi-ubff-oytc-31yt-xoukey   "/dev/sde1" is a new physical volume of "8.00 GiB"  ---new Physical vol Ume---  PV name               /dev/sde1  VG name      &N Bsp   &NBSp      PV Size                  8.00 gib  allocatable &nbsp ;          NO  PE Size                  0  & nbsp;  Total PE                0  free PE         &N Bsp       0  allocated pe          0  PV uuid        &NB Sp      7axfPk-Xxfg-HWQS-gBjj-GD0Q-xFgU-e9apR7  5. View Physical Volume groups[[email protected] ~]# pvscan pv/dev/sda2 VG vg_rac01 lvm2 [19.80 gib/0 free] pv/dev/sde1 LVM 2 [8.00 Gib] total:2 [27.80 GIB]/in use:1 [19.80 GIB]/in no vg:1 [8.00 Gib] 6. Extending the physical volume[[email protected] ~]# vgextend vg_rac01/dev/sde1  Volume Group "VG_RAC01" successfully extended[[email  protected] ~]# vgdisplay ---Volume group---  VG Name               & nbsp  vg_rac01  System id               Format         &N Bsp            lvm2  Metadata areas        2  Metadata Sequence No   4  VG Access                read/write  VG Status     & nbsp           resizable  MAX LV                   and nbsp;0  Cur LV                      2  Open LV   &NB Sp               2  Max PV                 &N Bsp  0  Cur PV                     2  Act PV       & nbsp             2  VG Size                   & nbsp;27.80 gib  pe Size                    4.00 mib  Total PE                   7116  Alloc pe/size        5069 /19.80 gib  free  pe/size        2047/8.00 gib  VG UUID       &NBSP ;        z1Fila-7Cwx-8m9K-XQMG-UK4a-4iLq-kibPv2  7. View logical Volumes [[email protected] ~]# lvdisplay  ---Logical volume---  LV Path                  /dev/vg_rac01/LogVol01  LV name               -Log vol01  VG Name               vg_rac01  LV uuid        &NB Sp       mnt2gu-ofuy-sbvc-mbu3-p1gz-bjcc-s1qxcl  LV Write access        read/write& nbsp LV Creation host, Time rac01, 2017-03-07 14:40:50 +0800  LV Status               A vailable  # Open                   1  LV Size                   11.80 gib  current le             3021&N Bsp segments               1  Allocation           &NBSP ;   &Nbsp;inherit  Read ahead sectors     auto -currently set to     256  Block D evice           253:0  ---Logical volume---  LV Path                  /dev/vg_rac01/LogVol00  LV name            &NB Sp   logvol00  VG Name                vg_rac01  LV UUID                 ojgg6e-dgbl-rbwb-pwch-utu2-st3i-kvvt9k  LV Write access    &NBSP ;   read/write  LV Creation host, Time rac01, 2017-03-07 14:40:55 +0800  LV Status       &NBSP ;       available  # Open                   1  LV Size                   8.00 gib  current LE         &NBS P    2048  segments                1  Allocation         & nbsp      inherit  Read ahead sectors     auto -currently set to     2 56  Block device           253:1  9. Check the situation[[email protected] ~]# VGS VG #PV #LV #SN Attr vsize vfree vg_rac01 2 2 0 wz--n-27.80g 8.00g[[email Prot Ected] ~]# LVs LV VG Attr lsize Pool Origin data% meta% Move Log cpy%sync Convert LogVol00 vg_rac01 -wi-ao----8.00g LogVol01 vg_rac01-wi-ao----11.80g 10. Extended Logical Volume expansion all                         ,         &NB Sp          [[email protected] ~]# lvextend-l +100%free/dev/mapper/vg_rac01-logvol01  Size of logical volume VG_RAC01/LOGVOL01 changed from 11.80 Gib (3021 extents) to 19.80 Gib (5068 extents) .  logical Volume LogVol01 successfully resized  [[email protected] ~]# vgs  vg        #PV # LV #SN attr   VSize  vfree  vg_rac01   2   2   0 wz--n-27.80g  &n Bsp 0[[email protected] ~]# lvs  lv       VG       Attr       LSize  Pool Origin data%  meta%  Move Log cpy%sync convert  LogVol00 vg_rac01-wi-ao----  8.00g                                &NBSP ;                    LogVol01 vg_rac01-wi-ao----19.80g          &NBS P                          ,         &NB Sp      [email protected] ~]# resize2fs/dev/mapper/vg_rac01-logvol01RESIZE2FS 1.41.12 (17-may-2010) Filesystem at/dev/mapper/vg_rac01-logvol01 is mounted on/; On-line resizing Requiredold desc_blocks = 1, new_desc_blocks = 2Performing an on-line resize OF/DEV/MAPPER/VG_RAC01-LOGV Ol01 to 5189632 (4k) blocks. The filesystem on/dev/mapper/vg_rac01-logvol01 is now 5189632 blocks long.

Linux root directory expansion

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