On Tue, 2009-01-27 at 18:34 +0530, Nitin Bhardwaj wrote: > Hi all, > > I'm using CentOS 5.2 ( kernel 2.6.18.-92.el5 ), which is based on RHEL > 5.2, on a Pentium PC ( i386). > After looking around, I built the unionfs module from the following > release patch: > > http://download.filesystems.org/unionfs/stable/unionfs-2.4_for_2.6.18-RHEL5.diff.gz > http://download.filesystems.org/unionfs/stable/unionfs-2.3.3_for_2.6.18-RHEL5.diff.gz > > referenced in the thread: > http://www.mail-archive.com/unionfs@mail.fsl.cs.sunysb.edu/msg02973.html > > on the RHEL kernel source distributed with the DVD media: > kernel-2.6.18-92.el5.src.rpm > > The patch applies successfully, it compiles fine and the module gets > built successfully; But when I try to insert the module ( of course > after depmod -a ), I get the following error: > > [r...@localhost ~]# modprobe unionfs > FATAL: Error inserting unionfs > (/lib/modules/2.6.18-92.el5/kernel/fs/unionfs/unionfs.ko): Unknown > symbol in module, or unknown parameter (see dmesg) > > The dmesg output is as follows: > > unionfs: Unknown symbol vfs_splice_from > unionfs: Unknown symbol krealloc > unionfs: Unknown symbol lookup_one_len_nd > unionfs: Unknown symbol vfs_splice_to > unionfs: Unknown symbol vfs_path_lookup
It looks like you haven't built the kernel rpms and updated the kernel on the machine you want to use the module on. I think these are changes to the VFS proper made by the patch. They won't be available if you try and install the module on a system with a stock kernel. > > --------------------------- > > I tried both unionfs-2.3.3 and unionfs-2.4 patches, with the same > failure. Please guide me if I'm missing anything here... > > Thanks, > Nitin > _______________________________________________ > unionfs mailing list: http://unionfs.filesystems.org/ > unionfs@mail.fsl.cs.sunysb.edu > http://www.fsl.cs.sunysb.edu/mailman/listinfo/unionfs _______________________________________________ unionfs mailing list: http://unionfs.filesystems.org/ unionfs@mail.fsl.cs.sunysb.edu http://www.fsl.cs.sunysb.edu/mailman/listinfo/unionfs
