CentOS - Aug 2020 - ZFS fails with latest C8 kernel

As if last weekend's UEFI debacle wasn't bad enough, it now seems the
latest C8 kernel (4.18.0-193.14.2) is incompatible with the current
ZFSOnLinux packages (0.8.4-1). When booted to the latest kernel, ZFS is
inaccessible on my C8 storage server. When I back off to the prior
kernel (4.18.0-193.6.3), all is well.

If a local ZFS system is unavailable to the C8 kernel support folks,
I'll be happy to assist them by volunteering my system as a lab rat.

--Doc Savage
  Fairview Heights, IL

On 10/08/2020 07:43, Robert G (Doc) Savage via CentOS
wrote:
> As if last weekend's UEFI debacle wasn't bad enough, it now seems
the
> latest C8 kernel (4.18.0-193.14.2) is incompatible with the current
> ZFSOnLinux packages (0.8.4-1). When booted to the latest kernel, ZFS is
> inaccessible on my C8 storage server. When I back off to the prior
> kernel (4.18.0-193.6.3), all is well.
> 
> If a local ZFS system is unavailable to the C8 kernel support folks,
> I'll be happy to assist them by volunteering my system as a lab rat.
> 
CentOS doesn't have 'C8 kernel support folks' because CentOS does
not
offer support.

You would need to file a bug upstream with Red Hat, but I doubt they 
will be interested as they do not ship ZFS nor support it. I think you 
are likely on your own on this one.

On Mon, Aug 10, 2020 at 01:43:00AM -0500, Robert G (Doc) Savage via CentOS
wrote:
> As if last weekend's UEFI debacle wasn't bad enough, it now seems
the
> latest C8 kernel (4.18.0-193.14.2) is incompatible with the current
> ZFSOnLinux packages (0.8.4-1). When booted to the latest kernel, ZFS is
> inaccessible on my C8 storage server. When I back off to the prior
> kernel (4.18.0-193.6.3), all is well.
please open an issue on zfsonlinux github:
https://github.com/openzfs/zfs/issues and provide them a reproducible
testcase.
> 
> If a local ZFS system is unavailable to the C8 kernel support folks,
> I'll be happy to assist them by volunteering my system as a lab rat.
Imho, that's out of CentOS scope, unless some people are willing to 
work on it with zfsonlinux people.

Cheers

Tru
-- 
Tru Huynh 
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 198 bytes
Desc: not available
URL:
<http://lists.centos.org/pipermail/centos/attachments/20200810/1214647e/attachment.sig>

On 8/10/20 1:43 AM, Robert G (Doc) Savage via CentOS
wrote:
> As if last weekend's UEFI debacle wasn't bad enough, it now seems
the
> latest C8 kernel (4.18.0-193.14.2) is incompatible with the current
> ZFSOnLinux packages (0.8.4-1). When booted to the latest kernel, ZFS is
> inaccessible on my C8 storage server. When I back off to the prior
> kernel (4.18.0-193.6.3), all is well.
> 
> If a local ZFS system is unavailable to the C8 kernel support folks,
> I'll be happy to assist them by volunteering my system as a lab rat.
CentOS does not support, and will not support ZFS (unless it is rolled
into RHEL).

Whatever packages you got for it .. they were written by ZFSOnLinux, not
us.  Ask them for an update.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 195 bytes
Desc: OpenPGP digital signature
URL:
<http://lists.centos.org/pipermail/centos/attachments/20200810/723b109e/attachment.sig>