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UBUNTU: SAUCE: md/raid0: Link to wiki with guidance on multi-zone RAID0 layout migration

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BugLink: https://bugs.launchpad.net/bugs/1850540

Helping an administrator understand this issue and how to deal with it
requires more text than achievable in a kernel error message. Let's
clarify the issue in the Ubuntu wiki, and have the kernel emit a link
to it.

I've submitted a similar change upstream:
  https://marc.info/?l=linux-raid&m=157360088014027&w=2
Should it get merged, we should consider replacing this patch with that one.
Otherwise, it is probably safe to drop this SAUCE patch after focal.

Signed-off-by: dann frazier <dann.frazier@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
This commit is contained in:
dann frazier
2019-12-18 07:29:30 -07:00
committed by Paolo Pisati
parent ba681a7bac
commit 9fc2bcb6f5
1 changed files with 2 additions and 0 deletions
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drivers/md/raid0.c
+2
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@@ -266,6 +266,8 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
pr_err("md/raid0:%s: cannot assemble multi-zone RAID0 with default_layout setting\n",
mdname(mddev));
pr_err("md/raid0: please set raid0.default_layout to 1 or 2\n");
pr_err("md/raid0: Read the following page for more information:\n");
pr_err("md/raid0: https://wiki.ubuntu.com/Kernel/Raid0LayoutMigration\n");
err = -EOPNOTSUPP;
goto abort;
}