Re: [OS-BUILD PATCH] arm64: switch ark kernel to 4K pagesize
On Thu, Jul 22, 2021 at 11:56 PM Mark Salter <msalter(a)redhat.com> 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 <msalter(a)redhat.com>
> >
> > 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 <msalter(a)redhat.com>
> >
>
> 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