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Old 01-02-2017, 10:07 AM   #1
NotionCommotion
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Registered: Aug 2012
Posts: 770

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Increase /dev/mapper/VolGroup-lv size


As seen, I ran out of space on my root partition. I've taken the following steps, but df still shows it being filled. What have I done wrong? Thanks

EDIT 1. Rebooted the machine, and now I can not putty into it.
EDIT 2. Sorry, I don't know how to add an image to a LinuxQuestions post, however, included a picture of the physical machine monitor https://s27.postimg.org/qkfjszusj/IMG_1077.jpg

Code:
[Michael@devserver datalogger]$ df -aTh
Filesystem           Type         Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root
                     ext4          50G   47G  8.9M 100% /
proc                 proc            0     0     0    - /proc
sysfs                sysfs           0     0     0    - /sys
devpts               devpts          0     0     0    - /dev/pts
tmpfs                tmpfs        5.8G     0  5.8G   0% /dev/shm
/dev/sda1            ext4         477M  177M  275M  40% /boot
/dev/mapper/VolGroup-lv_home
                     ext4         985G   55G  880G   6% /home
/dev/mapper/VolGroup-lv_mysql
                     ext3          99G  498M   93G   1% /var/lib/mysql
none                 usbfs           0     0     0    - /home/vbox/vbusbfs
none                 binfmt_misc     0     0     0    - /proc/sys/fs/binfmt_misc
[Michael@devserver datalogger]$ cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Sat Apr 19 05:57:56 2014
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/VolGroup-lv_root /                       ext4    defaults        1 1
UUID=12a081eb-285e-4599-95ab-db23b70280df /boot                   ext4    defaults        1 2
/dev/mapper/VolGroup-lv_home  /home                  ext4    defaults        1 2
/dev/mapper/VolGroup-lv_mysql /var/lib/mysql         ext3    barrier=0       1 2
/dev/mapper/VolGroup-lv_swap swap                    swap    defaults        0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
none /home/vbox/vbusbfs usbfs rw,devgid=496
504,devmode=664 0 0
[Michael@devserver datalogger]$ sudo cp -R /home /var/lib/mysql/home
[sudo] password for Michael:
[Michael@devserver datalogger]$ df -aTh
Filesystem           Type         Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root
                     ext4          50G   47G  6.1M 100% /
proc                 proc            0     0     0    - /proc
sysfs                sysfs           0     0     0    - /sys
devpts               devpts          0     0     0    - /dev/pts
tmpfs                tmpfs        5.8G     0  5.8G   0% /dev/shm
/dev/sda1            ext4         477M  177M  275M  40% /boot
/dev/mapper/VolGroup-lv_home
                     ext4         985G   55G  880G   6% /home
/dev/mapper/VolGroup-lv_mysql
                     ext3          99G   55G   39G  59% /var/lib/mysql
none                 usbfs           0     0     0    - /home/vbox/vbusbfs
none                 binfmt_misc     0     0     0    - /proc/sys/fs/binfmt_misc
[Michael@devserver datalogger]$ sudo lvreduce --size 200G /dev/mapper/VolGroup-lv_home
[sudo] password for Michael:
  WARNING: Reducing active and open logical volume to 200.00 GiB.
  THIS MAY DESTROY YOUR DATA (filesystem etc.)
Do you really want to reduce VolGroup/lv_home? [y/n]: y
  Size of logical volume VolGroup/lv_home changed from 1000.00 GiB (256000 extents) to 200.00 GiB (51200 extents).
  Logical volume lv_home successfully resized.
[Michael@devserver datalogger]$ df -aTh
Filesystem           Type         Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root
                     ext4          50G   47G  5.9M 100% /
proc                 proc            0     0     0    - /proc
sysfs                sysfs           0     0     0    - /sys
devpts               devpts          0     0     0    - /dev/pts
tmpfs                tmpfs        5.8G     0  5.8G   0% /dev/shm
/dev/sda1            ext4         477M  177M  275M  40% /boot
/dev/mapper/VolGroup-lv_home
                     ext4         985G   55G  880G   6% /home
/dev/mapper/VolGroup-lv_mysql
                     ext3          99G   55G   39G  59% /var/lib/mysql
none                 usbfs           0     0     0    - /home/vbox/vbusbfs
none                 binfmt_misc     0     0     0    - /proc/sys/fs/binfmt_misc
[Michael@devserver datalogger]$ sudo lvextend -L+500G /dev/mapper/VolGroup-lv_root
  Size of logical volume VolGroup/lv_root changed from 50.00 GiB (12800 extents) to 550.00 GiB (140800 extents).
  Logical volume lv_root successfully resized.
[Michael@devserver datalogger]$ df -aTh
Filesystem           Type         Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root
                     ext4          50G   47G  4.8M 100% /
proc                 proc            0     0     0    - /proc
sysfs                sysfs           0     0     0    - /sys
devpts               devpts          0     0     0    - /dev/pts
tmpfs                tmpfs        5.8G     0  5.8G   0% /dev/shm
/dev/sda1            ext4         477M  177M  275M  40% /boot
/dev/mapper/VolGroup-lv_home
                     ext4         985G   55G  880G   6% /home
/dev/mapper/VolGroup-lv_mysql
                     ext3          99G   55G   39G  59% /var/lib/mysql
none                 usbfs           0     0     0    - /home/vbox/vbusbfs
none                 binfmt_misc     0     0     0    - /proc/sys/fs/binfmt_misc
[Michael@devserver datalogger]$

Last edited by NotionCommotion; 01-02-2017 at 10:54 AM.
 
Old 01-02-2017, 11:15 AM   #2
michaelk
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Registered: Aug 2002
Posts: 21,597

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A partition, logical volume etc is just a container for the filesystem and one can be changed without regards to the other. Without using the -r option or taking into consideration the warning you reduced the size of the home LV but not the filesystem itself. In addition you increased the size of the root LV but not the filesystem itself which is why they are the same size as first posted.

Post the output of the command
pvdisplay
 
Old 01-02-2017, 11:27 AM   #3
NotionCommotion
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Registered: Aug 2012
Posts: 770

Original Poster
Rep: Reputation: Disabled
Thanks michaelk,

I am unable to execute pvdisplay, or any other commands for that mater. Since this post was specifically about increasing partition sizes, I posted a separate post about my immediate issues at http://www.linuxquestions.org/questi...nd-4175596631/. If you feel I should have just have one post, please delete the new one.

Thanks
 
  


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