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Thread: OPEN SUSE 11.3 stealing my disk space

  1. #1

    Default OPEN SUSE 11.3 stealing my disk space

    Filesystem Size Used Avail Use% Mounted on
    /dev/sda2 19G 15G 2.6G 86% /
    devtmpfs 498M 208K 498M 1% /dev
    tmpfs 500M 208K 499M 1% /dev/shm


    sda2 19GB-15G-2.6=1.4G lost
    I have tired this on other servers as well my disk space is getting lost. Anyone else have this problem?

  2. #2
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    Default Re: OPEN SUSE 11.3 stealing my disk space

    Quote Originally Posted by 3junior View Post
    Filesystem Size Used Avail Use% Mounted on
    /dev/sda2 19G 15G 2.6G 86% /
    devtmpfs 498M 208K 498M 1% /dev
    tmpfs 500M 208K 499M 1% /dev/shm


    sda2 19GB-15G-2.6=1.4G lost
    I have tired this on other servers as well my disk space is getting lost. Anyone else have this problem?
    Thats probably just the standard reserved space, it ensures root is not effected when a user fills up the drive. You can modify the amount of reserved the space with "/sbin/tune2fs", however if you want to keep the system usable when you've filled your disk, you'll want to keep some of the reserved space.

  3. #3
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    Smile Re: OPEN SUSE 11.3 stealing my disk space

    3junior, so I don't know how big your drives are, but allocating less that 20 GB to your system these days for the main server partition does not seem right, unless there is a good reason, like you have no money or they don't sell hard drives where I live. As you can see, 40 GB would have been best and on most system I setup 80 GB for Linux, leaving the rest for media and document files. It is hard to even find a 160 GB drive these days and it would be eight time bigger than what you have now. Why not give us the output of a fdisk -l and the free command for us and bare your hard drive soul to use?

    Code:
    su -
    password:
    fdisk -l
    free
    Post the output and let us help make a suggestion to you. Do you run a desktop of any sort? Are you getting the free space while logged in as a standard user? You get better numbers when you ask the same question as root. For instance, try these two menu Run Commands if you have loaded KDE:

    kfmclient openProfile webbrowsing sysinfo:/

    kdesu kfmclient openProfile webbrowsing sysinfo:/

    Then compare the difference in free space that you get. On my main partition as a normal user, I am using 17.6 GB, but as root, I am only using 10.8 GB. That means that 6.8 GB is really free, but reserved by the root system. Interesting isn't it? Now if you got that free amount as root, you may already be out if you check as a standard user. Humm, that's bad.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  4. #4

    Default Re: OPEN SUSE 11.3 stealing my disk space

    Quote Originally Posted by jdmcdaniel3 View Post
    3junior, so I don't know how big your drives are, but allocating less that 20 GB to your system these days for the main server partition does not seem right, unless there is a good reason, like you have no money or they don't sell hard drives where I live. As you can see, 40 GB would have been best and on most system I setup 80 GB for Linux, leaving the rest for media and document files. It is hard to even find a 160 GB drive these days and it would be eight time bigger than what you have now. Why not give us the output of a fdisk -l and the free command for us and bare your hard drive soul to use?

    Code:
    su -
    password:
    fdisk -l
    free
    Post the output and let us help make a suggestion to you. Do you run a desktop of any sort? Are you getting the free space while logged in as a standard user? You get better numbers when you ask the same question as root. For instance, try these two menu Run Commands if you have loaded KDE:

    kfmclient openProfile webbrowsing sysinfo:/

    kdesu kfmclient openProfile webbrowsing sysinfo:/

    Then compare the difference in free space that you get. On my main partition as a normal user, I am using 17.6 GB, but as root, I am only using 10.8 GB. That means that 6.8 GB is really free, but reserved by the root system. Interesting isn't it? Now if you got that free amount as root, you may already be out if you check as a standard user. Humm, that's bad.

    Thank You,
    The output I gave was from a test VM created today to play with. Not going to be a production server or even a lab server
    Code:
    linux-fn6g:~ # fdisk -l
    
    Disk /dev/sda: 21.5 GB, 21474836480 bytes
    255 heads, 63 sectors/track, 2610 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x000bd2f4
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1               1         191     1532928   82  Linux swap / Solaris
    Partition 1 does not end on cylinder boundary.
    /dev/sda2   *         191        2611    19437568   83  Linux
    linux-fn6g:~ # df -h
    Filesystem            Size  Used Avail Use% Mounted on
    /dev/sda2              19G   15G  2.6G  86% /
    devtmpfs              498M  208K  498M   1% /dev
    tmpfs                 500M  208K  499M   1% /dev/shm
    linux-fn6g:~ # free
                 total       used       free     shared    buffers     cached
    Mem:       1022260     599404     422856          0      27032     342012
    -/+ buffers/cache:     230360     791900
    Swap:      1532924          0    1532924
    Here is an example from another server
    Code:
    /dev/sdb1             917G  200M  871G   1%
    fdisk -l /dev/sdb
    
    Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
    255 heads, 63 sectors/track, 121601 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0xcbce2081
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sdb1               1      121601   976760001   83  Linux

  5. #5
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    Smile Re: OPEN SUSE 11.3 stealing my disk space

    I would say as a test VM setup, you now know you are OK on memory, and you need to allocate more disk space and that what you are seeing with openSUSE, seems normal. You could strip out the big desktops and use only a small one, then perhaps you could save more space, but why do you need to do that unless you really don't have any extra to give?

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  6. #6

    Default Re: OPEN SUSE 11.3 stealing my disk space

    thanks guys didnt think of Reserved block count.On my 1 TB drive 47Gb is reserved, I will reduce this to 500 MB as it will be backup storage and not main /

  7. #7
    Join Date
    Dec 2008
    Location
    Montgomery, AL
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    Default Re: OPEN SUSE 11.3 stealing my disk space

    Example from my system showing the approx 5% reserved space:

    Code:
    unamanic@gimli:~ $ df -h
    Filesystem            Size  Used Avail Use% Mounted on
    ...<SNIP>...
    /dev/sda6             295G  148G  133G  53% /home
    unamanic@gimli:~ $ sudo /sbin/tune2fs -l /dev/sda6 | grep 'Reserved block count'
    Reserved block count:     3923519
    unamanic@gimli:~ $ sudo /sbin/tune2fs -m 0 /dev/sda6
    tune2fs 1.41.11 (14-Mar-2010)
    Setting reserved blocks percentage to 0% (0 blocks)
    unamanic@gimli:~ $ df -h
    Filesystem            Size  Used Avail Use% Mounted on
    ...<SNIP>...
    /dev/sda6             295G  148G  148G  51% /home
    a simple 'sudo /sbin/tune2fs -m 0 [device]' will rid you of it, but you'll want to keep some reserved space on / or you're system might be hosed if the drive ever fills.

  8. #8
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    Default Re: OPEN SUSE 11.3 stealing my disk space

    Sure, bring it down a couple of percent.

    But honestly, when you are down to 5%, you'll be looking for a new disk anyway. It will only last you another week or month which translates perhaps to a buck or two saved on delaying your next disk's purchase.

  9. #9
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    Default Re: OPEN SUSE 11.3 stealing my disk space

    On 2010-11-19, 3junior <3junior@no-mx.forums.opensuse.org> wrote:
    >
    > thanks guys didnt think of Reserved block count.On my 1 TB drive 47Gb is
    > reserved, I will reduce this to 500 MB as it will be backup storage and
    > not main /



    I've set my /home mounted 500 GB drive to 0% reserved.
    There's no point in setting anything aside on a data partition.


    --
    When in doubt, use brute force.
    -- Ken Thompson

  10. #10
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    Default Re: OPEN SUSE 11.3 stealing my disk space

    On 2010-11-19 04:06, 3junior wrote:
    >
    > Filesystem Size Used Avail Use% Mounted on
    > /dev/sda2 19G 15G 2.6G 86% /
    > devtmpfs 498M 208K 498M 1% /dev
    > tmpfs 500M 208K 499M 1% /dev/shm
    >
    >
    > sda2 19GB-15G-2.6=1.4G lost
    > I have tired this on other servers as well my disk space is getting
    > lost. Anyone else have this problem?


    In Linux a deleted file is not really deleted till the programs that were
    using it, release the file. This can happen, for example, when you update
    the system. If you update a library that is in use, then delete the old
    version it is not really deleted till the programs that loaded the library
    are restarted.

    If this is the cause a restart will clear it.


    About reserved disk space... root can use it, it should not show as
    reserved for him. But df doesn't differentiate.


    My numbers are:

    Filesystem Size Used Avail Use% Mounted on
    /dev/sda7 20G 5.7G 14G 31% /


    the sum is 19.7... :-?

    Filesystem 1K-blocks Used Available Use% Mounted on
    /dev/sda7 20641788 5925744 13667404 31% /


    The sum is 19593148, a difference of 1048640, which should be 1 GiB.

    # tune2fs -l /dev/sda7 | grep 'Reserved block count\|Block size'
    Reserved block count: 262160
    Block size: 4096

    Which is precisely 1 GiB. So in my case the lost space is precisely the
    reserved space. Curious...

    And rounding errors are important in df, it seems.

    --
    Cheers / Saludos,

    Carlos E. R.
    (from 11.2 x86_64 "Emerald" at Telcontar)

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