Chris Murphy composed on 2016-07-31 12:43 (UTC-0400):
Felix Miata wrote:
https://fedoraproject.org/wiki/DNF_system_upgrade quote: "This will
reboot your machine immediately. The system should boot again into
Fedora using the same kernel, but this time, the upgrade process appears
on the boot screen. "
NAICT, that last part did not take place, but the term "the boot screen"
is ambiguous. No bootloader is installed on the subject/target
installation, one of many on a multiboot machine on which everything
boots from a master bootloader under exclusive control of myself.
dnf system-upgrade leverages systemd offline update mechanism. There's no
bootloader changes. What should be try is 'dnf system-upgrade reboot' sets
a symlink /system-update and as long as that exists, systemd picks it up
and starts the offline update target.
https://www.freedesktop.org/software/systemd/man/systemd.offline-updates.html
Quoting from it:
"Very early in the new boot systemd-update-generator(8) checks whether
/system-update exists. If so, it (temporarily and for this boot only)
redirects (i.e. symlinks) default.target to system-update.target, a special
target that is pulls in the base system (i.e. sysinit.target, so that all
file systems are mounted but little else) and the system update units."
NAICT, the 3 in the default boot stanza hijacked the redirect back to
multi-user.target. I restarted with the 3 removed after finding 700+ rpms in
the symlink /system-update/. Now vtty1 has stopped with these at screen bottom:
...
[OK] Started System Upgrade.
[OK] Reached target System Update.
[OK] Listening on D-Bus System Message Bus Socket.
The machine is very quiet, but I do see a flicker from the HD LED.
Later in that URL, again quoting:
"If applicable and possible, it should create a file system snapshot, then
install all packages."
What kind of snapshot does it want to create? / filesystem is EXT3, and
freespace prior to update rpms download was about 40%, 26% after. Only /home
and /usr/local are separate filesystems "required" by the F24 installation.
Tail of .bash_history on freshly updated F24 installation cloned to a
new partition with boot stanza and fstab appropriately adjusted: dnf
remove kernel-PAE-core-4.1.0 kernel-PAE-core-4.2.0
kernel-PAE-core-4.3.0 df / dnf repolist all dnf install
dnf-plugin-system-upgrade df / dnf system-upgrade download --refresh
--releasever=25 dnf config-manager --set-disabled updates dnf
system-upgrade download --refresh --releasever=25 dnf system-upgrade
download --refresh --releasever=25 --allowerasing dnf system-upgrade
reboot
I had tried several times just to use DNF to upgrade, but always got
error messages about updates not refreshing, which is why I tried the
officially recommended upgrade route, and why in history you can see I
disabled updates. The system-upgrade reported 700+ packages successfully
downloaded. I saw nothing that looked like any error message.
All I saw after booting was a normal login screen on vtty1. On login, I
don't see anything happening in ps -A that looks like any kind of
updating, nor do I hear any HD activity. dnf repolist all shows only
Fedora 24 is enabled. What now?
You'll need to figure out wher dnf system-upgrade download put all of the
packages it downloaded. Make sure the /system-update symlink points to
that location
It did/does.
- since I think that gets set with the 'dnf system-upgrade
reboot' command and then immediately reboots, you'd have to figure out a
way to intercept the update process - e.g. boot another OS, mount the
Fedora 24 root, and see if the symlink is there and points to the correct
location.
I didn't shut it down, left it alone overnight.
If it's not there or points to the wrong location, it's a bug.
If it's there and points to the correct location, reboot and edit the
Fedora 24 boot entry and remove 'rhgb quiet' so you can see the boot
I don't ever use any boot stanzas with quiet or rhgb in them.
process. It's really obvious either way when offline updates are
happening. With graphical boot, there's a status in percentage on the
upper left of the display,
Plymouth is not installed. There is no graphical boot. GUI only appears after
boot and me doing something to start it, or booting with 5 on cmdline instead
of 3.
and with text boot you'll see the
systemd-offline-updates process installing packages, listing each package,
along with a percent complete. It's not possible to miss it.
Not possible to _see_ any such thing here apparently.
So if that's not happen, check again if the symlink is still there and
pointed to the right location.
There are no vttys available to login on to check anything.
Either way, you've got a bug it's just a
matter of how it gets written up, but you'll probably need more verbose
systemd logging to attach to the bug. So redo 'dnf system-upgrade reboot'
and edit the Fedora 24 boot entry to add systemd.log_level=debug, boot
that modified entry, and once you're in Fedora 24 do something like
'journalctl -b -o short-monotonic > journal_dnfupgradesystemdebug.log' and
attach that log to the bug report. Hopefully it contains a hint. I'm
pretty sure this is all done with just systemd, and doesn't involve any
dracut stuff so you probably don't need to to also do rd.debug.
I left it alone a while. When I came back into the room, memtest was running,
indicated it rebooted itself. Logging into F25 reports "Fedora 25 (Rawhide)",
but on 4.6.4 fc24 kernel. 'rpm -qa | grep fc24 | wc -l' reports 297. Same
except s/fc24/fc25/g reports 776. Freespace is 35%. Oh, right, boot stanza
points specifically to the prior current kernel, as the upgrade process
presented me no opportunity to update kernel & initrd symlinks. 4.8.0...fc25
is installed. Reboot to 4.8 succeeds. :-)
'dnf repolist all' fails with "Error: failed to synchronize cache for repo
'updates-testing'".
Journals:
http://fm.no-ip.com/Tmp/Linux/F/
-b: http://fm.no-ip.com/Tmp/Linux/F/gx27c-jrnl-0.txt
-b -1: http://fm.no-ip.com/Tmp/Linux/F/gx27c-jrnl.txt
-b -2: http://fm.no-ip.com/Tmp/Linux/F/gx27c-jrnl-1.txt
-b -3: http://fm.no-ip.com/Tmp/Linux/F/gx27c-jrnl-2.txt
-b -4: http://fm.no-ip.com/Tmp/Linux/F/gx27c-jrnl-3.txt
Any suggestions where to go/what to do from here? Does 27% of total installed
packages =f24 sound about right for now?
--
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata *** http://fm.no-ip.com/
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