clevis-initramfs no ethernet because of Error: argument " enp2s0" is wrong: "dev" not a valid ifname

That's really strange. I mean, clevis_all_netbootable_devices() certainly does prepend a space. After cut & pasting the function into the shell:

(initramfs) clevis_all_netbootable_devices() {
> for device in /sys/class/net/*; do
<snip - rest of the function>
> }
(initramfs) clevis_all_netbootable_devices
 enp1s0 enp7s0
(initramfs)

But the way it is called by eth_check should be fine as long as it is using the default $IFS (and I see no evidence this has changed):

----
    for device in $(clevis_all_netbootable_devices); do
        ip link set dev "$device" up
---

(initramfs) for device in $(clevis_all_netbootable_devices); do
> echo ",$device,"
> done
,enp1s0, <<< no preceding space
,enp7s0,
,enp1s0,
,enp7s0,
(initramfs)

Note that, while I don't understand why this failing, your workaround suggests that you'll benefit from a side-effect of this change, which drops the preceding " ":
  https://github.com/latchset/clevis/commit/ae3249ed5ff102aa57650c3171330c47a41c95e8

This bug was fixed in the package clevis - 13-2ubuntu1

---------------
clevis (13-2ubuntu1) groovy; urgency=medium

  * initramfs: Fix parsing of interface names when bringing the network
    back down in local-bottom, which also avoids a mess of "ip: can't find
    device '/sys/class/net/$iface'" errors on the console. LP: #1896294.
  * initramfs: Warn users with multiple interfaces that they should consider
    specifying an 'ip=' parameter for reliable operation. LP: #1896289.
    As a side-effect, also fix interface parsing while bringing links
    up. LP: #1873593.
  * initramfs: Wait for interface to appear before attempting configuration.
    LP: #1873914.

 -- dann frazier <email address hidden> Mon, 21 Sep 2020 11:04:00 -0600

Hello Thorsten, or anyone else affected,

Accepted clevis into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/clevis/12-1ubuntu2.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

Hello Thorsten, or anyone else affected,

Accepted clevis into bionic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/clevis/8-1ubuntu0.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-bionic to verification-done-bionic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-bionic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

= focal verification =
Begin: Mounting root file system ... Begin: Running /scripts/local-top ... Volume group "ubuntu-vg" not found
  Cannot process volume group ubuntu-vg
[ 3.927883] pcieport 0000:00:02.5: pciehp: Failed to check link status
Please unlock disk dm_crypt-0: Begin: clevis: Waiting for interface enp1s0 to become available ... done.
IP-Config: enp1s0 hardware address 52:54:00:a0:ea:b7 mtu 1500 DHCP RARP
IP-Config: no response after 2 secs - giving up
IP-Config: enp1s0 hardware address 52:54:00:a0:ea:b7 mtu 1500 DHCP RARP
IP-Config: enp1s0 complete (dhcp from 192.168.122.1):
 address: 192.168.122.155 broadcast: 192.168.122.255 netmask: 255.255.255.0
 gateway: 192.168.122.1 dns0 : 192.168.122.1 dns1 : 0.0.0.0
 rootserver: 192.168.122.1 rootpath:
 filename :

cryptsetup: dm_crypt-0: set up successfully
done.
Begin: Running /scripts/local-premount ... [ 18.436541] Btrfs loaded, crc32c=crc32c-intel
Scanning for Btrfs filesystems
done.
Warning: fsck not present, so skipping root file system
[ 18.613839] EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null)
done.
Begin: Running /scripts/local-bottom ... Terminated
done.
<...>
Begin: Mounting root file system ... Begin: Running /scripts/local-top ... Volume group "ubuntu-vg" not found
  Cannot process volume group ubuntu-vg
[ 3.927883] pcieport 0000:00:02.5: pciehp: Failed to check link status
Please unlock disk dm_crypt-0: Begin: clevis: Waiting for interface enp1s0 to become available ... done.
IP-Config: enp1s0 hardware address 52:54:00:a0:ea:b7 mtu 1500 DHCP RARP
IP-Config: no response after 2 secs - giving up
IP-Config: enp1s0 hardware address 52:54:00:a0:ea:b7 mtu 1500 DHCP RARP
IP-Config: enp1s0 complete (dhcp from 192.168.122.1):
 address: 192.168.122.155 broadcast: 192.168.122.255 netmask: 255.255.255.0
 gateway: 192.168.122.1 dns0 : 192.168.122.1 dns1 : 0.0.0.0
 rootserver: 192.168.122.1 rootpath:
 filename :

cryptsetup: dm_crypt-0: set up successfully
done.
Begin: Running /scripts/local-premount ... [ 18.436541] Btrfs loaded, crc32c=crc32c-intel
Scanning for Btrfs filesystems
done.
Warning: fsck not present, so skipping root file system
[ 18.613839] EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null)
done.
Begin: Running /scripts/local-bottom ... Terminated
done.

= bionic verification =
Begin: Running /scripts/init-premount ... done.
Begin: Mounting root file system ... Begin: Running /scripts/local-top ... WARNING: Failed to connect to lvmetad. Falling back to device scanning.
  Volume group "clevis-bionic-vg" not found
  Cannot process volume group clevis-bionic-vg
  WARNING: Failed to connect to lvmetad. Falling back to device scanning.
  Volume group "clevis-bionic-vg" not found
  Cannot process volume group clevis-bionic-vg
Please unlock disk vda3_crypt:
clevis: Warning: multiple network interfaces available but no ip= parameter provided.
IP-Config: enp1s0 hardware address 52:54:00:d7:51:6a mtu 1500 DHCP RARP
IP-Config: enp7s0 hardware address 52:54:00:43:d0:14 mtu 1500 DHCP RARP
IP-Config: no response after 2 secs - giving up
IP-Config: enp1s0 hardware address 52:54:00:d7:51:6a mtu 1500 DHCP RARP
IP-Config: enp7s0 hardware address 52:54:00:43:d0:14 mtu 1500 DHCP RARP
IP-Config: enp1s0 complete (dhcp from 192.168.122.1):
 address: 192.168.122.29 broadcast: 192.168.122.255 netmask: 255.255.255.0
 gateway: 192.168.122.1 dns0 : 192.168.122.1 dns1 : 0.0.0.0
 rootserver: 192.168.122.1 rootpath:
 filename :

[ 16.033245] NET: Registered protocol family 38
  WARNING: Failed to connect to lvmetad. Falling back to device scanning.
  Reading all physical volumes. This may take a while...
  Found volume group "clevis-bionic-vg" using metadata type lvm2
  WARNING: Failed to connect to lvmetad. Falling back to device scanning.
  2 logical volume(s) in volume group "clevis-bionic-vg" now active
cryptsetup (vda3_crypt): set up successfully
done.
Begin: Running /scripts/local-premount ... [ 18.369789] Btrfs loaded, crc32c=crc32c-intel
Scanning for Btrfs filesystems
done.
Begin: Will now check root file system ... fsck from util-linux 2.31.1
[/sbin/fsck.ext4 (1) -- /dev/mapper/clevis--bionic--vg-root] fsck.ext4 -a -C0 /dev/mapper/clevis--bionic--vg-root
/dev/mapper/clevis--bionic--vg-root: clean, 111545/840480 files, 663482/3360768 blocks
done.
[ 18.566842] EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null)
done.
Begin: Running /scripts/local-bottom ... /scripts/local-top/clevis: line 117: 502 Terminated sleep 5
done.

This bug was fixed in the package clevis - 8-1ubuntu0.2

---------------
clevis (8-1ubuntu0.2) bionic; urgency=medium

  * initramfs: Fix parsing of interface names when bringing the network
    back down in local-bottom, which also avoids a mess of "ip: can't find
    device '/sys/class/net/$iface'" errors on the console. LP: #1896294.
  * initramfs: Warn users with multiple interfaces that they should consider
    specifying an 'ip=' parameter for reliable operation. LP: #1896289.
    As a side-effect, also fix interface parsing while bringing links
    up. LP: #1873593.
  * initramfs: Wait for interface to appear before attempting configuration.
    LP: #1873914.
  * initramfs: Make network configuration as-needed. This functionality
    depends on the new clevis-luks-list command which is also backported.
    LP: #1896509. Requires new build-dep on asciidoctor in order to build
    the clevis-luks-list manpage.

 -- dann frazier <email address hidden> Wed, 14 Oct 2020 11:23:01 -0600

The verification of the Stable Release Update for clevis has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

This bug was fixed in the package clevis - 12-1ubuntu2.2

---------------
clevis (12-1ubuntu2.2) focal; urgency=medium

  * initramfs: Fix parsing of interface names when bringing the network
    back down in local-bottom, which also avoids a mess of "ip: can't find
    device '/sys/class/net/$iface'" errors on the console. LP: #1896294.
  * initramfs: Warn users with multiple interfaces that they should consider
    specifying an 'ip=' parameter for reliable operation. LP: #1896289.
    As a side-effect, also fix interface parsing while bringing links
    up. LP: #1873593.
  * initramfs: Wait for interface to appear before attempting configuration.
    LP: #1873914.
  * initramfs: Make network configuration as-needed. This functionality
    depends on the new clevis-luks-list command which is also backported.
    LP: #1896509.

 -- dann frazier <email address hidden> Tue, 13 Oct 2020 17:00:47 -0600