Messages

1

General Hardware Discussion / Re: KVM cross-endian guest on POWER8 / IBM S822L

« on: November 22, 2024, 03:16:54 am »

My guess would be there is something wrong with the VM config, like 4K vs 64k page size (we are 64k only), minimum CPU level in the kernel, things like that.

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Operating Systems and Porting / Re: [NEWS] Fedora 41 is out!

« on: November 22, 2024, 03:07:07 am »

for the record, PowerNV aka bare metal systems only use the grub.cfg (or a config file from another bootloader), not the actual grub2 bootloader

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General Hardware Discussion / Re: KVM cross-endian guest on POWER8 / IBM S822L

« on: November 21, 2024, 03:13:05 am »

btw our VM is defined with

Code: [Select]

  <os>
    <type arch='ppc64' machine='pseries-6.2'>hvm</type>
  </os>
  <cpu mode='custom' match='exact' check='none'>
    <model fallback='forbid'>POWER8</model>
  </cpu>


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Operating Systems and Porting / Re: [NEWS] Fedora 41 is out!

« on: November 21, 2024, 03:09:57 am »

And the easiest thing should be to check how the boot entry looks like and possibly fix the errors from petitboot by using the "Edit" option.

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General Hardware Discussion / Re: KVM cross-endian guest on POWER8 / IBM S822L

« on: November 21, 2024, 02:29:41 am »

We have pretty similar P8 machine here (with FW860.B1 (SV860_243)) and do not observe such behaviour. The host is Fedora 40 for ppc64le, the ppc64 big endian VM is Fedora 28 (as this is the last supporting ppc64), little endian VMs are F-40.

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Operating Systems and Porting / Re: [NEWS] Fedora 41 is out!

« on: November 20, 2024, 01:55:08 pm »

It should be matter of running

Code: [Select]

grub2-mkconfig --output=/boot/grub2/grub.cfgfrom some kind of rescue environment, eg. after booting Fedora installer ISO with the rescue parameter. IIRC there are versions of petitboot that do not support BLS directly and versions that do support it. So knowing the details about the initrd load failure would be useful. The usual "make backups, etc." applies before doing any changes :-)

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Operating Systems and Porting / Re: [NEWS] Fedora 41 is out!

« on: November 20, 2024, 09:11:09 am »

My upgrade from F-40 to F-41 on a bare metal IBM LC912 (aka Boston) went OK, no problems booting after the upgrade. But I spoke with a colleague today and he reminded me some old(er) issues that were related to grub.cfg not being compatible with the parser in petitboot or grub-mkconfig failing to run (depends on petitboot / firmware version). I think that's what we are seeing here. If that's true, then the fix should be to recreate grub.cfg.

8

Operating Systems and Porting / Re: [NEWS] Fedora 41 is out!

« on: November 19, 2024, 02:11:52 am »

Thanks for the screenshot. Can you enter the shell and inspect the system logs? Is only Fedora 41 initrd affected and F-40 would boot OK ? Is there a significant size difference between initrd sizes of F-40 and F-41?

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Talos II / Re: Petitboot lock after Fedora 36 update

« on: December 12, 2022, 03:24:28 am »

A tough question I think ...

It looks to me that the skiroot 5.5-based kernel isn't able to cope with some situations where an XFS filesystem written by much newer kernel can be left in.Thus the solution could be to switch to upstream PNOR firmware builds which is using 5.10 kernels (still quite old, no development for p9, a little bit for p10 ...). Should be doable for Blackbird, there is some old work in progress for Talos from me. I agree the safe way around is to avoid XFS (and/or btrfs) for the host OS rootfs or /boot and rely on ext4. I think the mis-behaviour won't be ppc64le specific, but it's uncommon to use 5.5 kernel to read a filesystem written by a much more kernel ...

And how to recover from the failure without a physical access. If there would be a way to set a host's nvram variable from the BMC, one could disable the xfs module for the skiroot kernel and boot from another media.

10

Operating Systems and Porting / Re: [NEWS] Fedora 37 has arrived!

« on: November 17, 2022, 02:38:58 pm »

Or you can use mesa-freeworld from RPM Fusion. It should complement the reduced mesa from Fedora.

11

GPU Compute / Accelerators / Re: AMD Radeon 6600 XT working with kernel 6.1.0!

« on: November 08, 2022, 09:17:21 am »

That's an awesome news! Now to keep watching it if it continues to work in the future. But this is an important milestone. I would suggest to use https://fedoraproject.org/wiki/RawhideKernelNodebug to get all the RCs for the upcoming kernel even when running stable Fedoras. I have it enabled myself and it has already proved useful.

12

Talos II / Re: Unsatisfactory performance of SSD drives

« on: November 08, 2022, 04:35:08 am »

yeah, 0.9 GB/s is quite low, what does "sudo lspci -vv" say about "Link speed" for the SSD device?

For the record, I am getting 1.4GB/s (via hdparm -t) on my Samsung SSD 970 EVO Plus 1TB connected via PCIe 3.0 switch card.

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Operating Systems and Porting / Re: ata3 softreset failed and slow reboot

« on: November 07, 2022, 04:34:14 am »

It looks to me that mine "9128" is a different generation than yours 9215/9235, it might explain the different behaviour.

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Operating Systems and Porting / Re: ata3 softreset failed and slow reboot

« on: November 06, 2022, 03:27:48 am »

I suspect the way out is to pinpoint the issue to a specific kernel version(s) and then bisect ... AFAIK the AmigaOne people are running into similar kind of issues as the mainline kernel changes and the kernel maintainers are listening to them.

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Operating Systems and Porting / Re: ata3 softreset failed and slow reboot

« on: November 05, 2022, 12:46:03 pm »

Also, can the start of these messages/errors be tied to a specific kernel version? What are your the SATA controllers?