On Thu, Sep 30, 2004 at 09:43:14PM +0200, Diego Iastrubni wrote: > Hi all, > > I have been playing with the FS, and I wanted to duplicate an installation. I > formatted some device as ext3, mounted it, and copied into it kernel, bash, > and some other goodies. > > I fixed the target /etc/fstab and added the corresponding entry into my grub > menu, and the system did not boot caliming that "could'nt mout bucause of > unsupported features". > > A google session lead me to the conclusion that I needed to format the device > with the sparse_super option (and I can do this probably with tunefs). > > The man is not very helpfull, does anyone have more info about this option?
Quoting /usr/share/doc/e2fsprogs/RELEASE-NOTES : "E2fsprogs 1.08 (April 10, 1997) =============================== .. Add support for a new (incompatible) feature, "sparse_super". This feature reduces the number of blocks which contain copies of backup superblocks and block group descriptors. (It is only an incompatible feature because of a bug in ext2_free_blocks.) mke2fs and tune2fs now support a new -s option; e2fsck will recognize filesystems built with this feature turned on." This file mentions this features several times, dealing mainly with compatibility issues. As you see, it's an old feature. Which kernel you have which does not support it? As far as I understand from the release notes, all 2.2 and higher kernels support it. Are you sure it's this feature, and not something newer (e.g. ext3)? -- Didi ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
