[Unionfs] CentOS 4.3 with unionFS

[Van Haren, Frederic]

OS: CentOS 4.3 Uname –a = Linux localhost.localdomain 2.6.9-34.EL #1 Wed Mar 8 00:07:35 CST 2006 i686 i686 i386 GNU/Linux UnionFS 1.1.4   I was able to get unionFS compiled and installed with a small change in unionfs.h   1)       “mount -t unionfs -o dirs=/test/hd/=rw:/test/ibrix/=ro unionfs /test/ibrix” works as expected 2)       “unionctl /test/ibrix --list” works as expected 3)       “unionctl /test/ibrix --mode /test/ibrix rw”, returns “Failed to set permissions for /test/ibrix in /test/ibrix: Inappropriate ioctl for device” 4)       “uniondbg -g /test/ibrix” returns “ioctl incgen: Inappropriate ioctl for device” 5)       “umount /test/ibrix” works as expected   Looking for other projects using CentOS 4.3 and unionFS brought me to the OMSA-live CD project. Their readme (http://linux.dell.com/files/openmanage-contributions/omsa-45-live/OMSA-LiveCD-README-and-HowTo.txt) says the following about CentOS 4.3 and unionFS :   >>>>>>>>>>>>>  6. We need to add unionfs support.   Getting unionfs to play with CentOS was a bit unpleasant. In the later versions of unionfs it is possible to patch the kernel sources to add unionfs support, this however does not work with the CentOS Kernel sources. In addition the later versions also failed when I tried to compile them as modules. In the end I found that the most recent version of unionfs that I could get to play with CentOS is unionfs-1.0.9.   Download: unionfs-1.0.9.tar.gz from ftp://ftp.fsl.cs.sunysb.edu/pub/unionfs/ <<<<<<<<<<<<<<    They seem to indicate that the best way to get unionFS to work with CentOS 4.3 is to actually use the older version 1.0.9 (I haven’t tried it). Is UnionFS 1.1.x supposed to work CentOS 4.3? Is there a recommended approach to get unionFS to work with CentOS 4.3?   Thanks,             Frederic

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