docs/faq: add question about unpredictable block device names #1382
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
openshift-ci
bot
added
the
approved
|
I guess it's probably worth linking to openshift/machine-config-operator#1720 in there. |
jlebon
force-pushed
the
pr/dynamic-blockdev
branch
from
f61ff71
to
f0237c5
Compare
cgwalters
approved these changes
Oct 12, 2023
| ## Q: How do I configure a secondary block device via Ignition/MC if the name varies on each node? | ||
|
|
||
| First, verify that there isn't a `/dev/disk/by-*` symlink which works for your needs. If not, a few approaches exist: | ||
| - If this is a fresh install and you're using the live environment to install RHCOS, as part of the install flow you can inspect the machine (by hand, or scripted) to imperatively figure out what the block device should be according to your own heuristics (e.g. "the only multipath device there is", or "the only NVMe block device"). You can then e.g. "render" the final Ignition config with the device path to pass to `coreos-installer` or directly partition it and optionally format it and use a consistent partition (and optionally filesystem) label that will be available to use in the generic Ignition config. |
There was a problem hiding this comment.
I'm pretty sure Assisted Installer ships some logic to do this.
There was a problem hiding this comment.
Do you have a link offhand? Definitely makes sense to link to AI docs if that's what the reader is actually using.
This has come up multiple times now.
jlebon
force-pushed
the
pr/dynamic-blockdev
branch
from
f0237c5
to
1a68ae4
Compare
travier
approved these changes
Oct 16, 2023
|
I think this one just needs a |
|
/lgtm |
|
[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: cgwalters, jlebon, travier The full list of commands accepted by this bot can be found here. The pull request process is described here
Needs approval from an approver in each of these files:
Approvers can indicate their approval by writing |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This has come up multiple times now.