On 07/28/2016 02:06 PM, Sakar Arora wrote: > Hi Jim, > > Have you shared the steps to generate the grub image mentioned in the > mailchain? Nope. I haven't yet been able to get it to build successfully, sorry. > Thanks, > Sakar > > From: Jim Perrin > Sent: Tuesday, July 12, 8:33 PM > Subject: Re: TFTP issue with PXE loaded grubaa64.efi > To: Sakar Arora > Cc: Conversations around CentOS on ARM hardware, Bhupesh Sharma > > On 07/12/2016 04:38 AM, Sakar Arora wrote: > Hi Jim, > > > > While > testing CentOS 7 installation on LS2080a RDB, *only on one of > setups*, > we found this strange issue, where grub wasn�t able to TFTP the > boot > images from TFTP server. We use grubaa64.efi provided on CentOS > > website . > This is a bit of a known issue. It was reported a few months > ago, but it has taken time for an update. While there is no official fix > yet, we're working with pjones from rh. I'm hoping that we'll have an > experimental update for testing in the next day or two. > > > From the > tftp server logs we found that the tftp transaction would > always stop > with a �timeout� error. A quick search got me this bug > logged in > > Ubuntu bug tracking system. There was a mention of a patch, which is > > supposed to fix this issue. > > grub2 is already very heavily patched. > >> So, I went ahead and created a grub image with the latest upstream > grub > source code (git.savannah.gnu.org/grub.git). > > > > Using this > grub image, fixed the issue with TFTP transfers. > > > > But, there�s > different kind of issue with this new grub image. It > doesn�t seem to > be fully compatible with UEFI PXE boot protocol. When > loading grub via > UEFI PXE boot, the tftp server address does not get set > in the grub > environment variables, as was the case with grubaa64.efi > from CentOS > that we use. > Yup. There are quite a few patches in the grub2 we > use/ship. > > > Can you share you views on this? Give me a day or so to > rebuild the test package pjones has. It will be in the experimental > repository as it's not a 'released' fix. Once it's built and available, > I'll post directions to the list for how to test it. -- Jim Perrin The > CentOS Project | http://www.centos.org twitter: @BitIntegrity | GPG Key: > FA09AD77 > -- Jim Perrin The CentOS Project | http://www.centos.org twitter: @BitIntegrity | GPG Key: FA09AD77