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Dear Sir/Madam, I tried the following commands and found the space is plenty to do many jobs. However, when I used "df" to check the space remained and used, the ...
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  1. #1
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    Disk Full?


    Dear Sir/Madam,

    I tried the following commands and found the space is plenty to do many jobs. However, when I used "df" to check the space remained and used, the total disk space is just 75G.

    =============================================

    [root(at)rhlinux /]# cat /proc/partitions
    major minor #blocks name

    104 0 878807854 cciss/c0d0
    104 1 104391 cciss/c0d0p1
    104 2 878699272 cciss/c0d0p2
    253 0 8388608 dm-0
    253 1 8388608 dm-1
    253 2 8388608 dm-2
    253 3 2097152 dm-3
    253 4 8388608 dm-4
    253 5 8388608 dm-5
    253 6 8388608 dm-6
    253 7 2097152 dm-7
    253 8 10485760 dm-8

    [root(at)rhlinux /]# /sbin/fdisk -l

    Disk /dev/cciss/c0d0: 899.8 GB, 899899242496 bytes
    255 heads, 63 sectors/track, 109406 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes

    Device Boot Start End Blocks Id System
    /dev/cciss/c0d0p1 * 1 13 104391 83 Linux
    /dev/cciss/c0d0p2 14 109406 878699272+ 8e Linux LVM

    [root(at)rhlinux /]# df -h
    Filesystem Size Used Avail Use% Mounted on
    /dev/mapper/rootvg-root_lv
    7.8G 400M 7.0G 6% /
    /dev/mapper/rootvg-opt_lv
    7.8G 233M 7.2G 4% /opt
    /dev/mapper/rootvg-var_lv
    7.8G 3.9G 3.6G 52% /var
    /dev/mapper/rootvg-tmp_lv
    2.0G 68M 1.8G 4% /tmp
    /dev/mapper/rootvg-home_lv
    7.8G 1.7G 5.7G 23% /home
    /dev/mapper/rootvg-usr_lv
    7.8G 2.8G 4.6G 38% /usr
    /dev/mapper/rootvg-usr_local_lv
    7.8G 4.7G 2.8G 63% /usr/local
    /dev/cciss/c0d0p1 99M 12M 82M 13% /boot
    tmpfs 16G 12G 4.3G 74% /dev/shm
    /dev/mapper/rootvg-opt_oss_lv
    9.9G 498M 8.9G 6% /opt/oss

    [root(at)rhlinux /]#

    =============================================

    How can I use the remaining disk space?

    Is it possible to mount the free disk space to the root directory?

    Thank you very much!

    Best Regards,
    Chris.

  2. #2
    Super Moderator devils casper's Avatar
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    Hi and Welcome !

    Which version of RHEL or Fedora are you using? Have you tried to clean cache of Package Manager?

    Execute this in Terminal as root :
    Code:
    yum clean all
    Post the output of df -h command again.
    It is amazing what you can accomplish if you do not care who gets the credit.
    New Users: Read This First

  3. #3
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    Dear devils casper,

    Thanks for your reply!

    Here is the output:

    =============================================

    [root(at)rhlinux /]# uname -a
    Linux rhlinux 2.6.18-238.el5PAE #1 SMP Sun Dec 19 14:42:44 EST 2010 i686 i686 i386 GNU/Linux

    [root(at)rhlinux /]# yum clean all
    Loaded plugins: rhnplugin, security
    Cleaning up Everything

    [root(at)rhlinux /]# df -h
    Filesystem Size Used Avail Use% Mounted on
    /dev/mapper/rootvg-root_lv
    7.8G 401M 7.0G 6% /
    /dev/mapper/rootvg-opt_lv
    7.8G 233M 7.2G 4% /opt
    /dev/mapper/rootvg-var_lv
    7.8G 3.8G 3.6G 52% /var
    /dev/mapper/rootvg-tmp_lv
    2.0G 68M 1.8G 4% /tmp
    /dev/mapper/rootvg-home_lv
    7.8G 1.7G 5.7G 23% /home
    /dev/mapper/rootvg-usr_lv
    7.8G 2.8G 4.6G 38% /usr
    /dev/mapper/rootvg-usr_local_lv
    7.8G 4.7G 2.8G 63% /usr/local
    /dev/cciss/c0d0p1 99M 12M 82M 13% /boot
    tmpfs 16G 12G 4.3G 74% /dev/shm
    /dev/mapper/rootvg-opt_oss_lv
    9.9G 498M 8.9G 6% /opt/oss

    [root(at)rhlinux /]#

    =============================================

    Thank you very much!

    Best Regards,
    Chris.

    Quote Originally Posted by devils casper View Post
    Hi and Welcome !

    Which version of RHEL or Fedora are you using? Have you tried to clean cache of Package Manager?

    Execute this in Terminal as root :
    Code:
    yum clean all
    Post the output of df -h command again.

  4. $spacer_open
    $spacer_close
  5. #4
    Super Moderator devils casper's Avatar
    Join Date
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    Post the output of these commands :
    Code:
    lvdisplay 
    vgdisplay
    It is amazing what you can accomplish if you do not care who gets the credit.
    New Users: Read This First

  6. #5
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    Dear devils casper,

    Thanks for your reply!

    Here is the output:

    =============================================

    [root(at)rhlinux /]# lvdisplay
    --- Logical volume ---
    LV Name /dev/rootvg/root_lv
    VG Name rootvg
    LV UUID SWUh6D-lOiH-F08R-ER7k-rwks-OPcg-67I9S4
    LV Write Access read/write
    LV Status available
    # open 1
    LV Size 8.00 GB
    Current LE 256
    Segments 1
    Allocation inherit
    Read ahead sectors auto
    - currently set to 256
    Block device 253:0

    --- Logical volume ---
    LV Name /dev/rootvg/opt_lv
    VG Name rootvg
    LV UUID uqjfDB-TkE0-GmGf-9QlM-mEtp-c33K-igkIJJ
    LV Write Access read/write
    LV Status available
    # open 1
    LV Size 8.00 GB
    Current LE 256
    Segments 1
    Allocation inherit
    Read ahead sectors auto
    - currently set to 256
    Block device 253:1

    --- Logical volume ---
    LV Name /dev/rootvg/var_lv
    VG Name rootvg
    LV UUID yE5r4f-6pyG-6CE3-i8VA-aBhX-WVfx-SQqR0t
    LV Write Access read/write
    LV Status available
    # open 1
    LV Size 8.00 GB
    Current LE 256
    Segments 1
    Allocation inherit
    Read ahead sectors auto
    - currently set to 256
    Block device 253:2

    --- Logical volume ---
    LV Name /dev/rootvg/tmp_lv
    VG Name rootvg
    LV UUID 88S10u-zhnp-IBMd-D17I-lJ7A-PfCR-40jg4x
    LV Write Access read/write
    LV Status available
    # open 1
    LV Size 2.00 GB
    Current LE 64
    Segments 1
    Allocation inherit
    Read ahead sectors auto
    - currently set to 256
    Block device 253:3

    --- Logical volume ---
    LV Name /dev/rootvg/home_lv
    VG Name rootvg
    LV UUID 7jyb5a-0vfN-fLlG-CCTh-9EeL-3Zw8-5ViPLn
    LV Write Access read/write
    LV Status available
    # open 1
    LV Size 8.00 GB
    Current LE 256
    Segments 1
    Allocation inherit
    Read ahead sectors auto
    - currently set to 256
    Block device 253:4

    --- Logical volume ---
    LV Name /dev/rootvg/usr_lv
    VG Name rootvg
    LV UUID 55ykkD-eicJ-x1yB-EPlr-ohAj-janW-qeEFmA
    LV Write Access read/write
    LV Status available
    # open 1
    LV Size 8.00 GB
    Current LE 256
    Segments 1
    Allocation inherit
    Read ahead sectors auto
    - currently set to 256
    Block device 253:5

    --- Logical volume ---
    LV Name /dev/rootvg/usr_local_lv
    VG Name rootvg
    LV UUID Is2LhZ-SBQw-fUn0-IWCL-ey8o-gVlr-bjbPzY
    LV Write Access read/write
    LV Status available
    # open 1
    LV Size 8.00 GB
    Current LE 256
    Segments 1
    Allocation inherit
    Read ahead sectors auto
    - currently set to 256
    Block device 253:6

    --- Logical volume ---
    LV Name /dev/rootvg/swap_lv
    VG Name rootvg
    LV UUID PbaW12-fHh4-6R5M-35sM-QhN7-mK6c-XHWcuy
    LV Write Access read/write
    LV Status available
    # open 1
    LV Size 2.00 GB
    Current LE 64
    Segments 1
    Allocation inherit
    Read ahead sectors auto
    - currently set to 256
    Block device 253:7

    --- Logical volume ---
    LV Name /dev/rootvg/opt_oss_lv
    VG Name rootvg
    LV UUID vwF5Bl-dd33-LIB2-CjaA-aBdh-t5hV-WYdJMw
    LV Write Access read/write
    LV Status available
    # open 1
    LV Size 10.00 GB
    Current LE 320
    Segments 1
    Allocation inherit
    Read ahead sectors auto
    - currently set to 256
    Block device 253:8

    [root(at)rhlinux /]# vgdisplay
    --- Volume group ---
    VG Name rootvg
    System ID
    Format lvm2
    Metadata Areas 1
    Metadata Sequence No 10
    VG Access read/write
    VG Status resizable
    MAX LV 0
    Cur LV 9
    Open LV 9
    Max PV 0
    Cur PV 1
    Act PV 1
    VG Size 837.97 GB
    PE Size 32.00 MB
    Total PE 26815
    Alloc PE / Size 1984 / 62.00 GB
    Free PE / Size 24831 / 775.97 GB
    VG UUID T0fUZ1-iIWh-PkqF-Wvyj-fHKO-gkkE-diyo22

    [root(at)rhlinux /]#

    =============================================

    I took a look on the website of http-www-howtoforge.com-linux_lvm.

    I think that I should resize the Logical Volumes in order to make use of the full capacity of the hard discs.

    Am I right?

    Thank you very much!

    Best Regards,
    Chris.

    Quote Originally Posted by devils casper View Post
    Post the output of these commands :
    Code:
    lvdisplay 
    vgdisplay

  7. #6
    Super Moderator devils casper's Avatar
    Join Date
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    Alloc PE / Size 1984 / 62.00 GB
    Free PE / Size 24831 / 775.97 GB
    775.97GB is unused/free space in your Hard disk and you should resize LVM.

    Is it a production machine or a desktop/server for learning purpose only?
    It is amazing what you can accomplish if you do not care who gets the credit.
    New Users: Read This First

  8. #7
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    Dear devils casper,

    Thanks for your reply!

    This is a production machine installed by my colleague from other department.

    I am responsible for re-configuring the machine to suit the needs for my department.

    Suppose the machine makes use of the RAID 5, is it good to disable the feature of LV and making use the feature of physical disk (full capacity) alone (i.e. /dev/hda or /dev/sda)?

    Thank you very much!

    Best Regards,
    Chris.

    Quote Originally Posted by devils casper View Post
    775.97GB is unused/free space in your Hard disk and you should resize LVM.

    Is it a production machine or a desktop/server for learning purpose only?

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