Red Hat Bugzilla – Bug 1301318
usb-storage.ko isn't included in initramfs, can't save rdsosreport.txt
Last modified: 2016-12-20 13:06:46 EST
Created attachment 1117521 [details]
lsmod at dracut prompt
Description of problem:
Boot failure suggests saving /run/initramfs/rdsosreport.txt to a USB stick, but this isn't possible because usb-storage.ko isn't included in the initramfs.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Simulate boot failure with rd.break=pre-mount
2. Insert a partitioned/formatted USB stick
Device is recognized by kernel, but no /dev/sdX is instantiated, blkid doesn't see the /dev/ device either, and it can't be mounted.
lsmod doesn't show usb_storage present.
When booted normally, lsmod shows:
vfat 20480 1
fat 65536 1 vfat
uas 24576 0
usb_storage 65536 2 uas
So at least these need to be included in the initramfs, because all of them are built as modules according to /boot/config*, none are baked into the kernel itself.
The rescue, nohostonly, initramfs includes it:
[chris@f23s boot]$ lsinitrd initramfs-0-rescue-507442eec2af4c03ae5602ccbb5417b3.img | grep -i usb
-rw-r--r-- 1 root root 25108 Dec 15 10:43 usr/lib/modules/4.2.8-300.fc23.x86_64/kernel/drivers/usb/storage/usb-storage.ko.xz
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