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Description of problem:
mkinitrd umount the loop-back file system carrying drivers without flushing
it to the file. this results in a non-usable initrd image at boot time, so
sometimes a boot failure, when the needed scsi driver is part of the modules.
added a "sync" line just before the "umount $MNTPOINT" fixes the problem.
the root cause is maybe located in the loop.c lopp-back driver itself. the
bug-fix above is just a work-around.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. compile a new kernel (>=2.4.14)
2. install it (make install && make install_modules)
3. attempt to build a new initrd image with mkinitrd
Actual Results: in case the root fs is located on a scsi device, whose
driver is not built-into the kernel, the boot sequence fails.
Expected Results: scsi module found in the loopback image & boot successful
I know that RedHat 7.2 usually only carries kernel 2.4.7 by default.
However, this fix is a matter of improving the robustness of the mkinitrd
Created attachment 38824 [details]
An initrd file made by mkinitrd 3.2.6
An adjunct to the original report. mkinitrd had no problem building 2.4.15's
initrd file. But it failed with 2.4.15-pre1 and beyond. Attached is what it
builds for 2.4.16. I'm going to try Francois-Xavier's suggested patch...
Kernel bug; fixed in 2.4.16; never occured in any real Red Hat release.