On 24/07/2022 02.59, Patrick Shanahan wrote:
* Carlos E. R.
[07-23-22 19:04]: On 24/07/2022 00.40, Robert Webb wrote:
On 2022-07-23 20:48Z, Carlos E. R. wrote:
On 23/07/2022 00.59, mark neidorff wrote:
[...] Have I missed anything?
In a default openSUSE installation, you always can boot the previous kernel. You haven't done so.
Also in a default openSUSE installation, you can revert to a previous snapshot, in this case the one before the update. You have not done this (only if using the previous kernel doesn't improve things).
Mark, you had asked how to boot a previous snapshot. Of course, read the docs Carlos referenced, but the one time I needed to do that, I just selected the entry in the Grub boot menu for doing that, and it at one point stated the command you need to invoke to always boot that snapshot after you check it out the first time. The only hard part was identifying which snapshot to use. It can be useful to look at the list of snapshots first, and rename or label the one from just before bad stuff started happening.
Carlos, why the preference for booting a previous kernel, rather than a previous snapshot? Without knowing, I assumed that using a previous snapshot would be the most direct way to go back to a (sort of) known working state. Also, are the kernels included in the snapshotting system, such that booting an old snapshot might use an older kernel?
Reverting to a previous snapshot can be destructive, while just booting the previous kernel gains critical information if it works: the person can then fill a bug report so that the problem can be solved.
Revert to a previous snapshot recovers the machine, but then what? You can not ever do any update again.
booting a previous snapshot does not refert to that snapshot and is not destructive. reverting makes systemchanges but one should only do that after testing that snapshot and determing that is the correct action.
booting a previous snapshot is similar to booting a previous kernel.
But I did not say "booting" a previous snapshot, but "reverting" to a previous snapshot. There is a difference. -- Cheers / Saludos, Carlos E. R. (from openSUSE 15.3 (Legolas))