On Thu, Jul 22, 2021 at 11:56 PM Mark Salter <[email protected]> wrote:
>
> On Thu, 2021-07-22 at 23:35 +0800, Ming Lei wrote:
> > Hello,
> >
> > On Mon, Jul 12, 2021 at 05:17:28PM -0000, Mark Salter (via Email Bridge) 
> > wrote:
> > > From: Mark Salter <[email protected]>
> > >
> > > arm64: switch ark kernel to 4K pagesize
> > >
> > > RHEL9 for Aarch64 will use 4K pages. Shuffle the related configs
> > > around so that they are shared by both ark and fedora.
> > >
> > > Signed-off-by: Mark Salter <[email protected]>
> > >
> >
> > After I switch to 4K page size with upstream kernel on rhel8, the
> > following kernel panic is triggered. Not investigate further yet.
> > So we will not support upgrade from rhel8 to rhel9(rhel9 has to be
> > installed on one fresh storage system)?
>
> What filesystem? There are some which have restrictions based
> around pagesize. So running a 4k kernel on a filesystem created
> with a 64k kernel is risky.

Please see the whole dmesg log:

http://pastebin.test.redhat.com/981459

The FS is XFS.

[root@ampere-mtjade-04 ~]# lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda           8:0    1     0B  0 disk
sr0          11:0    1  1024M  0 rom
nvme0n1     259:0    0 894.3G  0 disk
├─nvme0n1p1 259:1    0   600M  0 part /boot/efi
├─nvme0n1p2 259:2    0     1G  0 part /boot
├─nvme0n1p3 259:3    0     4G  0 part [SWAP]
├─nvme0n1p4 259:4    0    70G  0 part /
└─nvme0n1p5 259:5    0 818.7G  0 part /home
nvme1n1     259:6    0 894.3G  0 disk
[root@ampere-mtjade-04 ~]# mount | grep nvme0
/dev/nvme0n1p4 on / type xfs
(rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme0n1p2 on /boot type xfs
(rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme0n1p5 on /home type xfs
(rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme0n1p1 on /boot/efi type vfat
(rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=winnt,errors=remount-ro)

Thanks,
Ming
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