I have a RHEL4(thus similar to FC3, which is why I ask here) server setup running with the root partition on a LVM. It was running fine until a 200GB dd disk image file was written to 157GB of free space. The dd file was from a 20GB hard drive, so I believe the problem was in the block size, but either way, the file system showed no increase in used space. The server was restarted, and during start up as the LVMs are started up, the message "file descriptor 3 open, mounting read-only" comes up. The system will start, badly broken, as the entire LVM is read-only. I restarted the system on a RHEL4 cd1, went into rescue mode, removed the dd file, restarted again on the hard drives, still get the same error. If I start up the system in rescue mode on the RHEL4 cd, I can access the filesystem with no problems, I can chroot into it, and actually run services with no problem and the services can access and use the LVM with no problem.
Any suggestions on what to do? The LVM how-to doesn't have an area that fits with this problem, and I have to believe if the rescue cd will access the LVM without problems, it can be repaired.