On 10/30/2012 11:07 PM, Alan Feuerbacher wrote: > On 10/30/2012 9:15 PM, Bruce Dubbs wrote: > > root [ ~ ]# mkdir -p /mnt/debian /mnt/fedora > root [ ~ ]# mount -t ext3 /dev/sdb2 /mnt/debian > [ 7007.133976] EXT3-fs (sdb2): error: unable to read superblock > mount: wrong fs type, bad option, bad superblock on /dev/sdb2, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > > [ 7132.816822] EXT3-fs (sda1): error: couldn't mount because of > unsupported optional features (240) > mount: wrong fs type, bad option, bad superblock on /dev/sda1, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > > I can't make any sense of this. > > Alan > As noted in the LFS book - http://www.linuxfromscratch.org/lfs/view/7.2/chapter02/creatingfilesystem.html - a message about "unsupported optional features" indicates that the e2fsprogs used to create that partition uses additional features that are not supported by the packages in LFS. Verify this by running the debugfs command given on that page, and check if there are any features other than what it lists. If there are, then you simply will be unable to mount sdb2 from your LFS system.
You *could* try to get the source code for Fedora's e2fsprogs and try compiling it in your LFS system, but then it might also need stuff from other libraries, or the additional FS features might also require additional kernel support, or any of a number of issues I haven't thought of. Basically, try this at your own risk. Alternately, you could try disabling the extra features on Fedora's partition - this is, assuming any of them *can* be disabled on a preexisting filesystem. Ask in Fedora support channels for whether this is doable. The other options would be either to copy the whole Fedora partition (or whatever bits you'd want to access from LFS) onto a partition supported by LFS's programs, or simply do without. -- http://linuxfromscratch.org/mailman/listinfo/blfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
