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Increasing the Size of a File System With Linux Logical Volume ManagerNagesh Ghungarde, June 2007 Here are the steps you need to increase your file system using Linux Logical Volume Manager (LVM). First check the file systems available in LVM and the free space.
# df -k
/home (/dev/vg00/lvol5 ): 1041432 total allocated Kb
918000 free allocated Kb
123432 used allocated Kb
11 % allocation used
/mna (/dev/vg00/mna ): 26174886 total allocated Kb
1230944 free allocated Kb
24943942 used allocated Kb
95 % allocation used
/mnb (/dev/vg00/lvol10 ): 13520275 total allocated Kb
12240452 free allocated Kb
1279823 used allocated Kb
9 % allocation used
/opt (/dev/vg00/lvol6 ): 4316832 total allocated Kb
1092264 free allocated Kb
3224568 used allocated Kb
74 % allocation used
/tmp (/dev/vg00/lvol4 ): 716320 total allocated Kb
711768 free allocated Kb
4552 used allocated Kb
0 % allocation used
/usr (/dev/vg00/lvol7 ): 2611832 total allocated Kb
1223968 free allocated Kb
1387864 used allocated Kb
53 % allocation used
/var (/dev/vg00/lvol8 ): 4690896 total allocated Kb
3521864 free allocated Kb
1169032 used allocated Kb
24 % allocation used
/stand (/dev/vg00/lvol1 ): 269032 total allocated Kb
214624 free allocated Kb
54408 used allocated Kb
20 % allocation used
/ (/dev/vg00/lvol3 ): 262144 total allocated Kb
111552 free allocated Kb
150592 used allocated Kb
57 % allocation used
$
Check the free space on the disk. # vgdisplay -v --- Volume groups --- VG Name /dev/vg00 VG Write Access read/write VG Status available Max LV 255 Cur LV 10 Open LV 10 Max PV 16 Cur PV 1 Act PV 1 Max PE per PV 4384 VGDA 2 PE Size (Mbytes) 16 Total PE 4374 Alloc PE 3586 Free PE 788 Total PVG 0 Total Spare PVs 0 Total Spare PVs in use 0 --- Logical volumes --- LV Name /dev/vg00/lvol1 LV Status available/syncd LV Size (Mbytes) 304 Current LE 19 Allocated PE 19 Used PV 1 LV Name /dev/vg00/lvol2 LV Status available/syncd LV Size (Mbytes) 4096 Current LE 256 Allocated PE 256 Used PV 1 LV Name /dev/vg00/lvol3 LV Status available/syncd LV Size (Mbytes) 256 Current LE 16 Allocated PE 16 Used PV 1 LV Name /dev/vg00/lvol4 LV Status available/syncd LV Size (Mbytes) 704 Current LE 44 Allocated PE 44 Used PV 1 LV Name /dev/vg00/lvol5 LV Status available/syncd LV Size (Mbytes) 1024 Current LE 64 Allocated PE 64 Used PV 1 LV Name /dev/vg00/lvol6 LV Status available/syncd LV Size (Mbytes) 4224 Current LE 264 Allocated PE 264 Used PV 1 LV Name /dev/vg00/lvol7 LV Status available/syncd LV Size (Mbytes) 2560 Current LE 160 Allocated PE 160 Used PV 1 LV Name /dev/vg00/lvol8 LV Status available/syncd LV Size (Mbytes) 4608 Current LE 288 Allocated PE 288 Used PV 1 LV Name /dev/vg00/mna LV Status available/syncd LV Size (Mbytes) 25600 Current LE 1600 Allocated PE 1600 Used PV 1 LV Name /dev/vg00/lvol10 LV Status available/syncd LV Size (Mbytes) 14000 Current LE 875 Allocated PE 875 Used PV 1 --- Physical volumes --- PV Name /dev/dsk/c0t6d0 PV Status available Total PE 4374 Free PE 788 Autoswitch On VG Name /dev/vg01 VG Write Access read/write VG Status available Max LV 255 Cur LV 0 Open LV 0 Max PV 16 Cur PV 1 Act PV 1 Max PE per PV 35004 VGDA 2 PE Size (Mbytes) 16 Total PE 8749 Alloc PE 0 Free PE 8749 Total PVG 0 Total Spare PVs 0 Total Spare PVs in use 0 --- Physical volumes --- PV Name /dev/dsk/c0t5d0 PV Status available Total PE 8749 Free PE 8749 Autoswitch On Check which users are currently logged in to the system. # who -a . system boot Mar 2 10:40 . run-level 3 Mar 2 10:40 3 0 S vxenable . Mar 2 10:40 0:01 61 id=vxen term=0 exit=0 bcheckrc . Mar 2 10:40 0:01 62 id=brc1 term=0 exit=0 cat . Mar 2 10:40 0:01 95 id=cprt term=0 exit=0 rm . Mar 2 10:40 0:01 96 id=ems1 term=0 exit=0 sh . Mar 2 10:40 0:01 97 id=ems2 term=0 exit=0 sh . Mar 2 10:40 0:01 100 id=link term=0 exit=0 rc . Mar 2 10:42 0:01 104 id=sqnc term=0 exit=0 LOGIN console Mar 2 10:42 old 3179 system console krsd . Mar 2 10:42 0:01 3180 id=krsd sfd . Mar 2 10:42 0:01 3181 id= sfd cimserve . Mar 2 10:42 0:01 3182 id=cim1 sh . Mar 2 10:42 0:01 3183 id=ems3 term=0 exit=0 p_client . Mar 2 10:42 0:01 3187 id=ems4 utild . Mar 2 10:42 0:01 3188 id=util LOGIN console Mar 2 10:44 old 3745 gateway dtremote Mar 8 18:21 . 1606 id=al:0 term=0 exit=0 gateway3 pts/0 Mar 9 15:28 0:21 2330 10.4.3.175 gateway pts/1 Mar 8 18:21 22:15 1658 id= 1 term=0 exit=0 root pts/2 Mar 2 18:12 old 15570 id= 2 term=0 exit=0 gateway4 pts/ta Mar 9 15:13 3:19 28619 id= ta term=0 exit=0 gateway2 pts/3 Mar 9 16:15 0:01 4344 ehgwin02 gateway2 dtremote Mar 9 16:10 . 4170 ehgwin02.geometr buildusr dtremote Mar 5 19:25 . 2833 id=cal: term=0 exit=0 gateway3 pts/4 Mar 9 16:24 . 4786 10.4.3.175:2.0 gateway2 pts/5 Mar 9 16:10 0:26 2962 id= 5 term=0 exit=0 root pts/tb Mar 9 14:24 . 394 ajays.geometric.local gateway4 pts/tc Mar 9 15:13 3:16 28865 id= tc term=0 exit=0 root dtremote Mar 8 12:47 . 26979 id=13:1 term=0 exit=0 gateway3 dtremote Mar 9 15:13 . 23547 id=13:0 term=0 exit=0 . ttyp1 Mar 9 16:15 0:21 2422 id= p1 term=0 exit=0 root dtremote Mar 9 12:24 . 26971 id=al:2 term=0 exit=0 . ttyp2 Mar 9 15:13 1:43 1529 id= p2 term=0 exit=0 LOGIN dtremote Mar 9 14:43 . 909 id=75:0 term=0 exit=4 gateway3 pts/td Mar 9 14:50 1:45 1125 id= td term=0 exit=0 gateway3 dtremote Mar 9 15:59 . 3634 10.4.3.175:2 gateway3 pts/6 Mar 9 16:00 0:12 3696 10.4.3.175:2.0 gateway3 pts/7 Mar 9 16:02 . 3832 10.4.3.175:2.0
We need to kill all the users before unmounting the file system. The # fuser -kc /home /home: 3677c 4205co 4341c 3667c 2330co 4787c 3830c 4786co 4784c 3683c 3669co 3634co 4213c 4152c 3276co 4342cKilled bash-2.04# 4197c 3612c 4783c 3693c 3829c 3694c 3696co Kill the processes one by one to remove the users. # kill -9 pid Before changing the size, we need to unmount the file system. # umount /home
Now extend the logical volume first ( bash-2.04# lvextend -L 1024M /dev/vg00/lvol5
Now extend the file system using the bash-2.04# extendfs /dev/vg00/lvol5 Now mount the file system. bash-2.04# mount home Now you can check the file system size by using the following command: bash-2.04# bdf Filesystem kbytes used avail %used Mounted on /dev/vg00/lvol3 262144 150592 111552 57% / /dev/vg00/lvol1 298928 54408 214624 20% /stand /dev/vg00/lvol8 4718592 1169024 3521872 25% /var /dev/vg00/lvol7 2621440 1387880 1223952 53% /usr /dev/vg00/lvol4 720896 7984 708360 1% /tmp /dev/vg00/lvol6 4325376 3224568 1092264 75% /opt /dev/vg00/lvol10 14336000 1279823 12240452 9% /mnb /dev/vg00/mna 26214400 24943942 1230944 95% /mna /dev/vg00/lvol5 1048576 123432 918000 12% /home bash-2.04# Unless otherwise licensed, code in all technical manuals herein (including articles, FAQs, samples) is provided under this License. |
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