The install disk autotests read the log of a provisioned node. The
choice files no longer carry the identifier in their name, and the
selection message names the driver group and the identifier instead of
the previous wording, so read the new lines. The reinstall case reads
the record of its disk without naming a group, as it did before.
Cover a RAID volume that reports a WWN against a direct attached disk
that reports none, in both scan orders, which the previous readback
decided by identifier. Keep the identifier rules of one group under
test as well: the disk that reports a WWN wins, the lower WWN wins
between two, and a path wins over no identifier at all.
Assert that the RHEL 10 copy is gone, that the RHEL 10 installer
includes the common script, and that the common script keeps the VROC
fallback, the Xen fallback and the guarded failure log.
The scan wrote each disk into a file named after the identifier it
reported, wwn, path or neither, and read back the groups of one such
file only. Two disks that reported different identifiers therefore
never competed on their driver group: a disk without a WWN was dropped
as soon as another disk reported one, and when the last disk scanned
reported a WWN the readback opened the WWN files alone. A direct
attached boot disk that reports no WWN thus lost to a RAID volume that
reports one, which is the case the driver groups exist to decide.
Write every disk into the file of its driver group and keep the
identifier as the sort key inside that group, ranked so that a WWN
sorts ahead of a path and a path ahead of no identifier. The driver
group now decides first for every disk, the identifier still decides
between disks of one group, and no disk is dropped from the scan.
The RHEL 10 support added a second copy of the script. The copy carries
the Xen fallback and a failure log that the common script does not, and
the common script carries the Intel RSTe/VROC fallback that the copy
does not. A RHEL 10 node whose OS disk is a VROC volume therefore fell
back to /dev/sda, and every later fix to disk selection had to be
written twice to reach both.
Fold the Xen fallback and the failure log into the common script and
delete the copy. The RHEL 10 installer includes the common script, as
the other installers already do. The failure log runs only when the
including script defines msgutil_r, because the subiquity path does
not.
Cover a guest whose only disk is a Xen disk, which the scan has to
select rather than leave to the fallback, and a guest with two Xen
disks, where the driver group decides. Against the previous filter both
cases fail.
The RHEL 10 copy of the script is about to go away, so stop naming it
here first. The cases keep running against the common script, so the
coverage does not change.
The device filter accepted sd, hd, vd and nvme names, so the xvd names
that a Xen guest presents never entered the scan. On such a guest the
whole detection ran on an empty list and the script fell through to the
xvda fallback, which takes the first Xen disk without looking at any of
them.
Accept the xvd names in the filter. A Xen disk now goes through the
same classification, kernel search and driver sort as any other disk,
so a guest with more than one disk gets a chosen disk rather than the
first one. The fallback stays for the case where the scan still finds
nothing.
The nvme branch of the filter is anchored at the same time, so a name
only matches when it starts with nvme.
The install disk autotest reads the log of a node whose disks sit
behind a SAS host adapter, and that driver group moved from the second
choice to the third. Read the third group instead.
Run the real scripts in a sandbox. A stub udevadm serves the device
properties from fixture files, and the partition list and the output
paths move into the sandbox. Every case runs against the common script
and against the copy the RHEL 10 installer includes.
Cover the direct attached disk against a RAID volume, a RAID only
server, the host adapter against a direct attached disk and against an
unknown driver, an NVMe device from the last group, and the default
fallback. Against the previous scripts the RAID cases fail, so they
discriminate.
The driver sort put the ahci and ata_piix controllers in the same
choice group as the PMC MaxRAID and megaraid_sas RAID controllers. On a
server with both, the sort could select a RAID data volume as the OS
install disk.
Move the RAID controllers to the second choice group. The direct
attached controllers hold the likely boot volume, and a server with
only RAID volumes still selects them from the second group. The SAS
host adapters move to the third group and every other driver to a new
fourth group, so the relative order of the remaining drivers does not
change. The RHEL 10 installer includes its own copy of the script, so
both carry the change.
Recovered from the lenovobuild branch.
Daniel Hilst
Vinícius Ferrão
Vinícius Ferrão