RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 1331698 - Network booting in grub fails when using virtio-net and SLOF-20160223-0
Summary: Network booting in grub fails when using virtio-net and SLOF-20160223-0
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: SLOF
Version: 7.3
Hardware: ppc64le
OS: Unspecified
unspecified
low
Target Milestone: rc
: ---
Assignee: Thomas Huth
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-04-29 10:00 UTC by Thomas Huth
Modified: 2016-11-04 04:33 UTC (History)
5 users (show)

Fixed In Version: SLOF-20160223-2.gitdbbfda4.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-11-04 04:33:52 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHEA-2016:2355 0 normal SHIPPED_LIVE SLOF bug fix and enhancement update 2016-11-03 13:48:37 UTC

Description Thomas Huth 2016-04-29 10:00:49 UTC 
Description of problem:
Booting via network in grub2 currently fails when using virtio-net as NIC and the current SLOF as firmware.

Version-Release number of selected component (if applicable):
SLOF-20160223

How reproducible:
100%

Steps to Reproduce:
1. In the /boot/grub2/grub.cfg file of the guest, add a section like this:
  menuentry 'Netboot' --class os {
     insmod net
     insmod ofnet
     insmod tftp
     insmod gzio
     insmod part_gpt
     set net_default_server=10.0.2.2
     net_add_addr eno0 ofnet_net 10.0.2.99
     echo 'Loading Linux ...'
     linux (tftp)/linux
     echo 'Loading initial ramdisk ...'
     initrd (tftp)/initrd
  }
2. On the host, prepare a folder with the TFTP files, e.g.:
  mkdir /tmp/tftp
  cp /boot/vmlinuz-3.10.0-373.el7.ppc64le /tmp/tftp/linux
  cp /boot/initramfs-3.10.0-373.el7.ppc64le.img /tmp/tftp/initrd
3. Run the guest like this:
  /usr/libexec/qemu-kvm -nographic -vga none -hda /path/to/guesthd.img \
             -device virtio-net-pci,netdev=mynet -netdev user,id=mynet
4. At the grub prompt, select the 'Netboot' entry.

Actual results:
error: Couldn't retrieve mac address..
error: card not found.
error: destination unreachable.

Expected results:
grub succeeds to load the files via network.

Additional info:
This is a known bug from upstream, which has been fixed shortly after the 20160223 release of SLOF. We should backport this patch from upstream:
 http://git.qemu.org/?p=SLOF.git;a=commitdiff;h=d78d7322efbe81027dbc
Comment 1 Thomas Huth 2016-05-03 07:09:00 UTC 
Seems like I forgot to copy the whole QEMU command string in step 3 of the description. It should look like this:

  /usr/libexec/qemu-kvm -nographic -vga none -hda /path/to/guesthd.img \
             -device virtio-net-pci,netdev=mynet \
             -netdev user,id=mynet,tftp=/tmp/tftp

i.e. the "tftp=/tmp/tftp" was missing at the end.
Comment 2 Miroslav Rezanina 2016-05-06 12:48:00 UTC 
Fix included in SLOF-20160223-2.gitdbbfda4.el7
Comment 4 Xu Han 2016-06-02 10:59:31 UTC 
Reproduced this issue with SLOF-20160223-1.gitdbbfda4.el7.

After boot from entry 'Netboot', console showed:

  error: Couldn't retrieve mac address..
  error: card not found.
  error: destination unreachable.



Verified this with SLOF-20160223-3.gitdbbfda4.el7.noarch.

After boot from entry 'Netboot', console showed:

  Loading Linux ...
  Loading initrd ...
  Preparing to boot Linux version 3.10.0-418...
  ...


So base on the above test result, this bug has been fixed.
Comment 6 errata-xmlrpc 2016-11-04 04:33:52 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHEA-2016-2355.html
Note You need to log in before you can comment on or make changes to this bug.