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I just launched new EC2 instances with the Ubuntu precise and saucy AMIs. I installed jfsutils, but I am unable to mount a JFS volume:

$ sudo mount -a
mount: unknown filesystem type 'jfs'

Looking at /proc/filesystems it seems that neither JFS nor XFS are listed (nor BtrFS, for that matter). There doesn't seem to be any module to load:

$ sudo modprobe jfs
FATAL: Module jfs not found.

It looks like the standard 'generic' kernel is installed:

$ uname -a
Linux ip-10-0-0-209 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

What am I missing? Am I just stuck with ext3/4 on this machine?

JFS did work on the 10.04 EC2 AMIs.

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  • What kernel do you have installed? Please provide the output of uname -a in your question. I suspect the EC2 instance runs a specific kernel which is a minimal build, without generic modules included.
    – gertvdijk
    Feb 10, 2014 at 13:51

1 Answer 1

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seems to be modules were missed install them with xfsprogs

sudo aptitude install xfsprogs
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  • I get: E: Unable to locate package partman-jfs. I get the same trying to install the jfs-modules dependency directly. I'm using the default sources.list with main and universe enabled. Feb 3, 2014 at 13:16
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    The partman-jfs package description says "Warning: This package is intended for the use in building debian-installer images only. Do not install it on a normal Ubuntu system." Feb 3, 2014 at 13:16
  • Sorry for the delay. Now are you able to mount it manually ? like with ` mount -t xfs /dev/sdaXX /path/to/mountpoint`@AryehLeibTaurog
    – Raja G
    Feb 11, 2014 at 5:57
  • @AryehLeibTaurog Next try to install xfsprogs
    – Raja G
    Feb 11, 2014 at 5:58
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    Now I can format and mount XFS volumes. But JFS still does not work. Feb 11, 2014 at 12:46

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