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Thread: swapon: stat failed: no such file or directory

  1. #1
    Join Date
    May 2011
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    Ubuntu 11.04 Natty Narwhal

    Exclamation swapon: stat failed: no such file or directory

    Hi,

    I have this problem with my swap partition.
    I tried to do
    Code:
    swapon /dev/sda8
    But i got
    Code:
    swapon: /dev/sda8: stat failed: No such file or directory
    So i checked /etc/fstab and fdisk -l
    There is swap partition at /dev/sda8 and I can see it from gParted but when I try to swapon from gParted i get an error.


    Has anyone had this problem before?
    Thanks in advance

  2. #2
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    Re: swapon: stat failed: no such file or directory

    Quote Originally Posted by Vuk Serbia View Post
    Code:
    swapon /dev/sda8
    But i got
    Code:
    swapon: /dev/sda8: stat failed: No such file or directory
    Please post your fdisk -l output. It is unlikely that your device name is correct.

    This error message can only appear when device name is incorrect / invalid / non-existing.

    Attempting to swapon without sudo (as you seem to be doing above) will produce a different error message (permission denied).

    Please post your fdisk -l output, as well as /etc/fstab if you are using it (/etc/fstab is no longer required since 11.04 onwards).

    Or, for a quick solution, use
    Code:
    sudo swapon -a
    which will automatically activate all swap partitions it finds.
    Cheers,PRShah
    Make your own: Ubuntu, Kubuntu, Xubuntu, Mythbuntu All-in-One Live DVD
    "I never make mistakes; I thought I did, once.. but I was wrong."

  3. #3
    Join Date
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    Ubuntu 11.04 Natty Narwhal

    Re: swapon: stat failed: no such file or directory

    Thank you for replying.

    Here is my fdisk
    Code:
    Disk /dev/sda: 320.1 GB, 320072933376 bytes
    255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0xcf18e5c8
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *        2048    20973567    10485760    c  W95 FAT32 (LBA)
    /dev/sda2        20973568    21178367      102400    7  HPFS/NTFS/exFAT
    /dev/sda3        21178368   210126847    94474240    7  HPFS/NTFS/exFAT
    /dev/sda4       210128895   625141743   207506424+   f  W95 Ext'd (LBA)
    /dev/sda5       210128896   270127103    29999104   83  Linux
    /dev/sda6       270129152   314984447    22427648   83  Linux
    /dev/sda7       314986496   621094911   153054208    7  HPFS/NTFS/exFAT
    /dev/sda8       621096960   625139711     2021376   82  Linux swap / Solaris
    And here is fstab
    Code:
    # /etc/fstab: static file system information.
    #
    # Use 'blkid' to print the universally unique identifier for a
    # device; this may be used with UUID= as a more robust way to name devices
    # that works even if disks are added and removed. See fstab(5).
    #
    # <file system> <mount point>   <type>  <options>       <dump>  <pass>
    proc            /proc           proc    nodev,noexec,nosuid 0       0
    # / was on /dev/sda6 during installation
    UUID=8ae54a76-2b71-4a66-ad66-e85d48a30dc3 /               ext4    errors=remount-ro 0       1
    # /home was on /dev/sda7 during installation
    UUID=acdedb0a-a2a5-48d4-b1cc-ec47e3fa130d /home           ext4    defaults        0       2
    # swap was on /dev/sda8 during installation
    UUID=fc7214dc-c6b4-4160-827e-cc1cceeff3a0 none            swap    sw              0       0
    Also, when I tried to do sudo swapon -a, I get this:
    Code:
    swapon: cannot find the device for UUID=fc7214dc-c6b4-4160-827e-cc1cceeff3a0
    And I have attached gparted screenshot, so maybe you can get some idea from it.
    Attached Images Attached Images

  4. #4
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    Re: swapon: stat failed: no such file or directory

    Quote Originally Posted by Vuk Serbia View Post
    Also, when I tried to do sudo swapon -a, I get this:
    Code:
    swapon: cannot find the device for UUID=fc7214dc-c6b4-4160-827e-cc1cceeff3a0
    Your UUID for the swap partition is probably wrong. Find the correct UUID using the blkid command
    Code:
    sudo blkid /dev/sda8
    Replace the discovered UUID in your /etc/fstab file (modify existing swap entry).

    Or you can simply remove the swap entry from your /etc/fstab altogether, and then successfully use swapon -a.
    Cheers,PRShah
    Make your own: Ubuntu, Kubuntu, Xubuntu, Mythbuntu All-in-One Live DVD
    "I never make mistakes; I thought I did, once.. but I was wrong."

  5. #5
    Join Date
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    Re: swapon: stat failed: no such file or directory

    Ok, here is what I did:

    I have removed swap entry from fstab, and tried to do
    Code:
    sudo swapon -a
    New entry hadn't been written to fstab. Instead I got this error from attachment. Error reffers to /dev/sda7 (attachment from previous post)

    Edit:
    Also, here is content of mtab
    Code:
    /dev/sda5 / ext4 rw,errors=remount-ro 0 0
    proc /proc proc rw,noexec,nosuid,nodev 0 0
    sysfs /sys sysfs rw,noexec,nosuid,nodev 0 0
    none /sys/fs/fuse/connections fusectl rw 0 0
    none /sys/kernel/debug debugfs rw 0 0
    none /sys/kernel/security securityfs rw 0 0
    udev /dev devtmpfs rw,mode=0755 0 0
    devpts /dev/pts devpts rw,noexec,nosuid,gid=5,mode=0620 0 0
    tmpfs /run tmpfs rw,noexec,nosuid,size=10%,mode=0755 0 0
    none /run/lock tmpfs rw,noexec,nosuid,nodev,size=5242880 0 0
    none /run/shm tmpfs rw,nosuid,nodev 0 0
    /dev/sda6 /home ext4 rw 0 0
    binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,noexec,nosuid,nodev 0 0
    gvfs-fuse-daemon /home/vuk/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,user=vuk 0 0
    Attached Images Attached Images
    Last edited by Vuk Serbia; September 26th, 2012 at 01:06 PM.

  6. #6
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    Re: swapon: stat failed: no such file or directory

    Quote Originally Posted by Vuk Serbia View Post
    I have removed swap entry from fstab, and tried to do
    Code:
    sudo swapon -a
    You have to restart the system for changes made to /etc/fstab to take effect.

    Why is it suddenly trying to use /dev/sda7 instead of /dev/sda8? What change have you made to your /etc/fstab?
    Cheers,PRShah
    Make your own: Ubuntu, Kubuntu, Xubuntu, Mythbuntu All-in-One Live DVD
    "I never make mistakes; I thought I did, once.. but I was wrong."

  7. #7
    Join Date
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    Ubuntu 11.04 Natty Narwhal

    Re: swapon: stat failed: no such file or directory

    It isn't trying to use /dev/sda7 but that error appeared after i tried to set sda8 as swap.
    Maybe partitions are overlaping or something like that, but it wasn't like that before.

    I guess it could also be that hard disk is failing.

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