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Bug 1288687 - WARNING at block/genhd.c:626 add_disk when booting Rawhide live image from USB, boot fails
Summary: WARNING at block/genhd.c:626 add_disk when booting Rawhide live image from US...
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: rawhide
Hardware: All
OS: Linux
unspecified
urgent
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: F24AlphaBlocker
TreeView+ depends on / blocked
 
Reported: 2015-12-05 01:42 UTC by Adam Williamson
Modified: 2015-12-14 18:09 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-12-14 18:09:29 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)
screenshot of the trace (and errors) (1.08 MB, image/jpeg)
2015-12-05 01:43 UTC, Adam Williamson 		no flags Details
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Description Adam Williamson 2015-12-05 01:42:56 UTC 
On three different bare metal systems, trying to boot https://kojipkgs.fedoraproject.org/work/tasks/1413/12051413/Fedora-Live-KDE-x86_64-rawhide-20151204.iso from a USB stick, I hit the same problem. Quite early in boot a WARNING traceback occurs just after some errors about the USB device. Boot then fails: the system sits apparently idle for a while, but in fact it's just dracut timing out, eventually it dumps you at a dracut emergency console with an error that /dev/mapper/live-rw does not exist.
Comment 1 Adam Williamson 2015-12-05 01:43:33 UTC 
Created attachment 1102485 [details]
screenshot of the trace (and errors)
Comment 2 Adam Williamson 2015-12-05 01:45:26 UTC 
Proposing as an Alpha blocker: "Release-blocking live and dedicated installer images must boot when written to optical media of an appropriate size (if applicable) and when written to a USB stick with at least one of the officially supported methods." - https://fedoraproject.org/wiki/Fedora_24_Alpha_Release_Criteria#Release-blocking_images_must_boot (in a footnote). We may need to test on a few more systems and with different writing methods, but this looks a lot like a general failure.
Comment 3 Adam Williamson 2015-12-05 02:56:51 UTC 
Confirmed that this does not happen when booting from a DVD (same image).
Comment 4 Adam Williamson 2015-12-07 06:25:19 UTC 
Note: I also see this WARNING when I boot from an optical disc then plug in a USB stick, and the attached USB stick's partitions do not show up under /dev - so I see /dev/sdb, but no /dev/sdb1 etc.
Comment 5 Laura Abbott 2015-12-10 19:13:10 UTC 
Bisected and asked upstream, https://git.kernel.org/cgit/linux/kernel/git/mkp/scsi.git/commit/?h=4.5/scsi-queue&id=221255aee67ec1c752001080aafec0c4e9390d95 fixed the issue on my local test system. Dropped the patch into rawhide.
Comment 6 Adam Williamson 2015-12-14 06:02:41 UTC 
Sorry I didn't confirm the fix for this yet, I'll get to it tomorrow. Thanks a lot for the prompt response!
Comment 7 Adam Williamson 2015-12-14 18:09:29 UTC 
As KDE lives have been broken for a while, I confirmed this bug also existed in the 2015-12-04 Xfce live, and then confirmed that the 2015-12-14 Xfce live works fine. All good, thanks again.
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