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Thread: /dev/sdc is apparently in use by the system; will not make a filesystem here!

  1. #11
    Join Date
    Jul 2008
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    565

    Re: /dev/sdc is apparently in use by the system; will not make a filesystem here!

    Sorry, I kept getting 503s earlier when trying to connect to ubuntuforums. Have you thought about booting a live cd and trying to create the filesystem on the drive?

  2. #12
    Join Date
    Jul 2008
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    18

    Re: /dev/sdc is apparently in use by the system; will not make a filesystem here!

    Hi

    I was about to try the CD startup when I tried one last thing again.

    sudo mdadm --stop /dev/md0

    It worked, but I find it strange because I did it before and md0 did not appear in the fdisk -l screen.

    Immdiately after that I was able to run the sudo mkfs.ext3 /dev/sdc


    Maybe it is because I ran the zero-superblock tasks overnight - something that made me nervous, since I have no idea what it does.

    Than You for your help!

  3. #13
    Join Date
    Jun 2008
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    59

    Re: /dev/sdc is apparently in use by the system; will not make a filesystem here!

    have you tried deleting and recreating the partition?
    (Sorry if it's an obvious question. Or if there's no way for you to do that..)
    Actually, I have no experience with RAID arrays, but that's the only thing I can think of.. wipe it and try again.. You probably don't have any data on it, or you wouldn't be making a filesystem..

    EDIT: Ahaha. I didn't check the second page.
    Never mind me.
    Last edited by Lexicon101; July 30th, 2008 at 07:52 AM. Reason: Cause I'm an idiot.

  4. #14
    Join Date
    Jul 2008
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    18

    Re: /dev/sdc is apparently in use by the system; will not make a filesystem here!

    Hi


    I have done that and the space is still being taken up.
    Any specialists in mdadm software RAID out there?
    I am using RAID0, so the RAID overhead should be minimal , not 186GB.I am also not so sure that it is RAID overhead occupying the space.

    thanks

  5. #15
    Join Date
    Jul 2008
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    18

    Re: /dev/sdc is apparently in use by the system; will not make a filesystem here!

    Does anybody have any idea why 186GB of space is taken up on my 4 * 1TB mdadm RAID0 array, even when there are no files present on it?

  6. #16
    Join Date
    Jul 2008
    Beans
    18

    Arrow Re: /dev/sdc is apparently in use by the system; will not make a filesystem here!

    In case anyone is interested :

    It was no that complicated.
    I ran 'tune2fs -i 0 -c 0 -r 0 -m 0 /dev/md0'

  7. #17
    Join Date
    Aug 2008
    Beans
    1

    Re: /dev/sdc is apparently in use by the system; will not make a filesystem here!

    I had the same problem in SUSE 10. I had to disable the multipathing services

    chkconfig boot.multipath off

    chkconfig multipathd off

    I could tell multipathing was enabled because I saw a dm-0 device when I did an fdisk -l

    Disk /dev/dm-0: 16.1 GB, 16106127360 bytes
    64 heads, 32 sectors/track, 15360 cylinders
    Units = cylinders of 2048 * 512 = 1048576 bytes
    Once these where off, I was able to format it.

    I am now looking into what commands I will need in the future to accomplish this without turning multipathing services off

    Hope this helps

  8. #18
    Join Date
    Sep 2009
    Beans
    1

    Re: /dev/sdc is apparently in use by the system; will not make a filesystem here!

    I had a similar problem as well but it was because the drive was part of a volume group, after I removed the drive from the group everything worked fine.

  9. #19
    Join Date
    Jun 2011
    Beans
    1

    Re: /dev/sdc is apparently in use by the system; will not make a filesystem here!

    Sorry to reply to an old post, but I ran into this same problem and none of the suggestions fixed the issue. However, it gave me a good head start. My hard drives were new out of the box, and Ubuntu Linux Server (9.0) could see them and Fdisk yeilded a partition, but I could not write the file system.

    The Gigabyte motherboard I was using had some sort of "quick install" process for optimizing the BIOS, and I think when I ran that (should have read closer before hitting yes ... oops!) I think it maybe set up some sort of RAID interface with the hardware.

    I tried to reset the BIOS to factory defaults, and redo the partitions... no luck.

    I finished by turning the RAID back on, saving it, going into the RAID BIOS, deleting a partition there, then exiting, putting the BIOS back to standard (not RAID), and then...

    ... it worked fine

    Thanks for the help! I'd still be beating my head against the wall otherwise. While the solutions posted didn't fix it, knowing that software RAIDS caused this in the past led me to track down the hardware RAID changes in the BIOS.

    Rich

  10. #20
    Join Date
    May 2011
    Beans
    0

    Re: /dev/sdc is apparently in use by the system; will not make a filesystem here!

    Quote Originally Posted by abriejo View Post
    Hi

    I was about to try the CD startup when I tried one last thing again.

    sudo mdadm --stop /dev/md0

    It worked, but I find it strange because I did it before and md0 did not appear in the fdisk -l screen.

    Immdiately after that I was able to run the sudo mkfs.ext3 /dev/sdc


    Maybe it is because I ran the zero-superblock tasks overnight - something that made me nervous, since I have no idea what it does.

    Than You for your help!

    It worked for me. Thanks!

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