During Debian install, kickstart reports a flock issue

[Jim Somerville]

During Debian install (was lowlat AIO), we see this:

2022-07-22 15:13:22.546 kickstart mkfs info: Edit the LVM config so LVM only looks for LVs on the root disk
2022-07-22 15:13:22.546 kickstart mkfs info: LVM 'global_filter' Config: global_filter = [ "a| /dev/sda7 |", "r|.*|" ]
2022-07-22 15:13:22.546 kickstart mkfs info: LVM 'lvm_preferred_names' Config: preferred_names = [ "^/dev/mpath/", "^/dev/mapper/mpath", "^/dev/[hs]d" ]
2022-07-22 15:13:31.621 kickstart mkfs warn: Releasing storage device locks and FDs.
flock: 3: Bad file descriptor
[ 12.808733] sdb:
[ 15.130270] EXT4-fs (sda4): mounted filesystem with ordered data mode. Opts: (null)
ostree/deploy/debian initialized as OSTree root
[ 15.349639] EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: (null)
running: ostree pull --url file:///instboot/ostree_repo --repo=/sysroot/ostree/repo debian starlingx

The "Bad file descriptor" doesn't seem to hurt, the install succeeds. But it is still disconcerting to the user.

Severity is Minor.

Solution is probably to add 2>/dev/null onto the end of this line:
https://github.com/starlingx/metal/blob/master/kickstart/files/kickstart.cfg#L1843

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/starlingx/metal/+/862669

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/metal/+/862669
Committed: https://opendev.org/starlingx/metal/commit/5744685eca5ee24ae719de8075777f4e09ad0a23
Submitter: "Zuul (22348)"
Branch: master

commit 5744685eca5ee24ae719de8075777f4e09ad0a23
Author: Wentao Zhang <email address hidden>
Date: Wed Oct 26 13:18:32 2022 +0800

    Debian: fix the bug of getting the dev's fd

    Some pipe files are generated when assigning variables
    and getting the process's fd, and are removed when done.
    Since the pipe's fd is not the dev's fd, filter out the pipe fd.

    Test Plan:
    PASS: qemu iso installed successful
    PASS: lab iso installed successful

    Closes-Bug: 1991816
    Signed-off-by: Wentao Zhang<email address hidden>
    Change-Id: Icfdd4922dcc7e3c2e5003296c90519f8b7624d88