0s autopkgtest [14:04:23]: starting date and time: 2025-04-07 14:04:23+0000 0s autopkgtest [14:04:23]: git checkout: 325255d2 Merge branch 'pin-any-arch' into 'ubuntu/production' 0s autopkgtest [14:04:23]: host juju-7f2275-prod-proposed-migration-environment-2; command line: /home/ubuntu/autopkgtest/runner/autopkgtest --output-dir /tmp/autopkgtest-work.xpx_id7p/out --timeout-copy=6000 --setup-commands /home/ubuntu/autopkgtest-cloud/worker-config-production/setup-canonical.sh --apt-pocket=proposed=src:linux-meta-gcp-5.15,src:linux-gcp-5.15,src:linux-signed-gcp-5.15 --apt-upgrade dm-writeboost --timeout-short=300 --timeout-copy=20000 --timeout-build=20000 '--env=ADT_TEST_TRIGGERS=linux-meta-gcp-5.15/5.15.0.1081.90~20.04.1 linux-gcp-5.15/5.15.0-1081.90~20.04.1 linux-signed-gcp-5.15/5.15.0-1081.90~20.04.1' --setup-commands 'apt-get install -y ^kernel-testing--linux\-gcp\-5\.15--full--preferred$ || apt-get install -y ^linux-image\-gcp\-5\.15$ ^linux-headers\-gcp\-5\.15$ || apt-get install -y ^linux-image-generic\-gcp\-5\.15$ ^linux-headers-generic\-gcp\-5\.15$' --setup-commands 'apt-get install -y ^kernel-testing--linux\-gcp\-5\.15--modules-extra--preferred$ || apt-get install -y ^linux-modules-extra\-gcp\-5\.15$ || :' -- ssh -s /home/ubuntu/autopkgtest/ssh-setup/nova -- --flavor autopkgtest-cpu2-ram4-disk20-arm64 --security-groups autopkgtest-juju-7f2275-prod-proposed-migration-environment-2@sto01-arm64-4.secgroup --name adt-focal-arm64-dm-writeboost-20250407-134938-juju-7f2275-prod-proposed-migration-environment-2-269f62ad-2f5b-488e-b21e-6b3efc92b797 --image adt/ubuntu-focal-arm64-server --keyname testbed-juju-7f2275-prod-proposed-migration-environment-2 --net-id=net_prod-autopkgtest-workers-arm64 -e TERM=linux --mirror=http://ftpmaster.internal/ubuntu/ 72s autopkgtest [14:05:35]: testbed dpkg architecture: arm64 72s autopkgtest [14:05:35]: testbed apt version: 2.0.10 73s autopkgtest [14:05:36]: @@@@@@@@@@@@@@@@@@@@ test bed setup 73s autopkgtest [14:05:36]: testbed release detected to be: None 73s autopkgtest [14:05:36]: updating testbed package index (apt update) 74s Hit:1 http://ftpmaster.internal/ubuntu focal InRelease 74s Hit:2 http://ftpmaster.internal/ubuntu focal-updates InRelease 74s Hit:3 http://ftpmaster.internal/ubuntu focal-security InRelease 74s Get:4 http://ftpmaster.internal/ubuntu focal-proposed InRelease [277 kB] 74s Get:5 http://ftpmaster.internal/ubuntu focal-proposed/restricted Sources [15.7 kB] 74s Get:6 http://ftpmaster.internal/ubuntu focal-proposed/universe Sources [8808 B] 74s Get:7 http://ftpmaster.internal/ubuntu focal-proposed/multiverse Sources [1948 B] 74s Get:8 http://ftpmaster.internal/ubuntu focal-proposed/main Sources [57.8 kB] 74s Get:9 http://ftpmaster.internal/ubuntu focal-proposed/main arm64 Packages [316 kB] 74s Get:10 http://ftpmaster.internal/ubuntu focal-proposed/main arm64 c-n-f Metadata [1708 B] 74s Get:11 http://ftpmaster.internal/ubuntu focal-proposed/restricted arm64 Packages [2936 B] 74s Get:12 http://ftpmaster.internal/ubuntu focal-proposed/restricted arm64 c-n-f Metadata [116 B] 74s Get:13 http://ftpmaster.internal/ubuntu focal-proposed/universe arm64 Packages [54.2 kB] 74s Get:14 http://ftpmaster.internal/ubuntu focal-proposed/universe arm64 c-n-f Metadata [1844 B] 74s Get:15 http://ftpmaster.internal/ubuntu focal-proposed/multiverse arm64 Packages [8116 B] 74s Get:16 http://ftpmaster.internal/ubuntu focal-proposed/multiverse arm64 c-n-f Metadata [116 B] 78s Fetched 746 kB in 1s (884 kB/s) 78s Reading package lists... 79s Reading package lists... 79s Building dependency tree... 79s Reading state information... 80s The following additional packages will be installed: 80s linux-gcp-5.15-headers-5.15.0-1081 linux-headers-5.15.0-1081-gcp 80s linux-headers-gcp-edge linux-image-5.15.0-1081-gcp linux-image-gcp-edge 80s linux-modules-5.15.0-1081-gcp 80s Suggested packages: 80s fdutils linux-gcp-5.15-doc-5.15.0 | linux-gcp-5.15-source-5.15.0 80s linux-gcp-5.15-tools 80s The following NEW packages will be installed: 80s linux-gcp-5.15-headers-5.15.0-1081 linux-gcp-edge 80s linux-headers-5.15.0-1081-gcp linux-headers-gcp-edge 80s linux-image-5.15.0-1081-gcp linux-image-gcp-edge 80s linux-modules-5.15.0-1081-gcp 80s 0 upgraded, 7 newly installed, 0 to remove and 0 not upgraded. 80s Need to get 49.3 MB of archives. 80s After this operation, 266 MB of additional disk space will be used. 80s Get:1 http://ftpmaster.internal/ubuntu focal-proposed/main arm64 linux-gcp-5.15-headers-5.15.0-1081 arm64 5.15.0-1081.90~20.04.1 [12.0 MB] 80s Get:2 http://ftpmaster.internal/ubuntu focal-proposed/main arm64 linux-modules-5.15.0-1081-gcp arm64 5.15.0-1081.90~20.04.1 [19.9 MB] 80s Get:3 http://ftpmaster.internal/ubuntu focal-proposed/main arm64 linux-image-5.15.0-1081-gcp arm64 5.15.0-1081.90~20.04.1 [15.2 MB] 80s Get:4 http://ftpmaster.internal/ubuntu focal-proposed/main arm64 linux-image-gcp-edge arm64 5.15.0.1081.90~20.04.1 [2612 B] 80s Get:5 http://ftpmaster.internal/ubuntu focal-proposed/main arm64 linux-headers-5.15.0-1081-gcp arm64 5.15.0-1081.90~20.04.1 [2194 kB] 80s Get:6 http://ftpmaster.internal/ubuntu focal-proposed/main arm64 linux-headers-gcp-edge arm64 5.15.0.1081.90~20.04.1 [2544 B] 80s Get:7 http://ftpmaster.internal/ubuntu focal-proposed/main arm64 linux-gcp-edge arm64 5.15.0.1081.90~20.04.1 [1928 B] 81s dpkg-preconfigure: unable to re-open stdin: No such file or directory 81s Fetched 49.3 MB in 1s (53.5 MB/s) 81s Selecting previously unselected package linux-gcp-5.15-headers-5.15.0-1081. 81s (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 67857 files and directories currently installed.) 81s Preparing to unpack .../0-linux-gcp-5.15-headers-5.15.0-1081_5.15.0-1081.90~20.04.1_arm64.deb ... 81s Unpacking linux-gcp-5.15-headers-5.15.0-1081 (5.15.0-1081.90~20.04.1) ... 82s Selecting previously unselected package linux-modules-5.15.0-1081-gcp. 82s Preparing to unpack .../1-linux-modules-5.15.0-1081-gcp_5.15.0-1081.90~20.04.1_arm64.deb ... 82s Unpacking linux-modules-5.15.0-1081-gcp (5.15.0-1081.90~20.04.1) ... 84s Selecting previously unselected package linux-image-5.15.0-1081-gcp. 84s Preparing to unpack .../2-linux-image-5.15.0-1081-gcp_5.15.0-1081.90~20.04.1_arm64.deb ... 84s Unpacking linux-image-5.15.0-1081-gcp (5.15.0-1081.90~20.04.1) ... 84s Selecting previously unselected package linux-image-gcp-edge. 84s Preparing to unpack .../3-linux-image-gcp-edge_5.15.0.1081.90~20.04.1_arm64.deb ... 84s Unpacking linux-image-gcp-edge (5.15.0.1081.90~20.04.1) ... 84s Selecting previously unselected package linux-headers-5.15.0-1081-gcp. 84s Preparing to unpack .../4-linux-headers-5.15.0-1081-gcp_5.15.0-1081.90~20.04.1_arm64.deb ... 84s Unpacking linux-headers-5.15.0-1081-gcp (5.15.0-1081.90~20.04.1) ... 85s Selecting previously unselected package linux-headers-gcp-edge. 85s Preparing to unpack .../5-linux-headers-gcp-edge_5.15.0.1081.90~20.04.1_arm64.deb ... 85s Unpacking linux-headers-gcp-edge (5.15.0.1081.90~20.04.1) ... 85s Selecting previously unselected package linux-gcp-edge. 85s Preparing to unpack .../6-linux-gcp-edge_5.15.0.1081.90~20.04.1_arm64.deb ... 85s Unpacking linux-gcp-edge (5.15.0.1081.90~20.04.1) ... 85s Setting up linux-gcp-5.15-headers-5.15.0-1081 (5.15.0-1081.90~20.04.1) ... 85s Setting up linux-headers-5.15.0-1081-gcp (5.15.0-1081.90~20.04.1) ... 85s Setting up linux-headers-gcp-edge (5.15.0.1081.90~20.04.1) ... 85s Setting up linux-image-5.15.0-1081-gcp (5.15.0-1081.90~20.04.1) ... 86s I: /boot/vmlinuz is now a symlink to vmlinuz-5.15.0-1081-gcp 86s I: /boot/initrd.img is now a symlink to initrd.img-5.15.0-1081-gcp 86s Setting up linux-image-gcp-edge (5.15.0.1081.90~20.04.1) ... 86s Setting up linux-modules-5.15.0-1081-gcp (5.15.0-1081.90~20.04.1) ... 87s Setting up linux-gcp-edge (5.15.0.1081.90~20.04.1) ... 87s Processing triggers for linux-image-5.15.0-1081-gcp (5.15.0-1081.90~20.04.1) ... 87s /etc/kernel/postinst.d/initramfs-tools: 87s update-initramfs: Generating /boot/initrd.img-5.15.0-1081-gcp 92s flash-kernel: deferring update (trigger activated) 92s /etc/kernel/postinst.d/zz-flash-kernel: 92s flash-kernel: deferring update (trigger activated) 92s /etc/kernel/postinst.d/zz-update-grub: 92s Sourcing file `/etc/default/grub' 93s Sourcing file `/etc/default/grub.d/init-select.cfg' 93s Generating grub configuration file ... 93s Found linux image: /boot/vmlinuz-5.15.0-1081-gcp 93s Found initrd image: /boot/initrd.img-5.15.0-1081-gcp 93s Found linux image: /boot/vmlinuz-5.4.0-212-generic 93s Found initrd image: /boot/initrd.img-5.4.0-212-generic 93s Adding boot menu entry for UEFI Firmware Settings 93s done 93s Processing triggers for flash-kernel (3.103ubuntu1~20.04.4) ... 93s Unsupported platform on EFI system, doing nothing. 94s Reading package lists... 94s Building dependency tree... 94s Reading state information... 94s E: Unable to locate package ^kernel-testing--linux-gcp-5.15--modules-extra--preferred$ 94s E: Couldn't find any package by glob '^kernel-testing--linux-gcp-5.15--modules-extra--preferred$' 94s E: Couldn't find any package by regex '^kernel-testing--linux-gcp-5.15--modules-extra--preferred$' 94s Reading package lists... 94s Building dependency tree... 94s Reading state information... 94s E: Unable to locate package ^linux-modules-extra-gcp-5.15$ 94s E: Couldn't find any package by glob '^linux-modules-extra-gcp-5.15$' 94s E: Couldn't find any package by regex '^linux-modules-extra-gcp-5.15$' 94s autopkgtest [14:05:57]: upgrading testbed (apt dist-upgrade and autopurge) 95s Reading package lists... 95s Building dependency tree... 95s Reading state information... 95s Calculating upgrade...Starting pkgProblemResolver with broken count: 0 95s Starting 2 pkgProblemResolver with broken count: 0 95s Done 95s 95s 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 95s Reading package lists... 95s Building dependency tree... 95s Reading state information... 95s Starting pkgProblemResolver with broken count: 0 95s Starting 2 pkgProblemResolver with broken count: 0 95s Done 96s 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 96s autopkgtest [14:05:59]: rebooting testbed after setup commands that affected boot 103s autopkgtest-virt-ssh [14:06:06]: ------- nova console-log 4b530d7a-0e6f-4ec4-bdea-8f004bbf9875 (adt-focal-arm64-dm-writeboost-20250407-134938-juju-7f2275-prod-proposed-migration-environment-2-269f62ad-2f5b-488e-b21e-6b3efc92b797) ------ 103s [2J[01;01H[=3h[2J[01;01HBdsDxe: loading Boot0002 "UEFI Misc Device 2" from PciRoot(0x0)/Pci(0x1,0x3)/Pci(0x0,0x0) 103s BdsDxe: starting Boot0002 "UEFI Misc Device 2" from PciRoot(0x0)/Pci(0x1,0x3)/Pci(0x0,0x0) 103s error: no suitable video mode found. 103s cloudimg-rootfs: clean, 74747/2593280 files, 692245/5217019 blocks 103s [[0;32m OK [0m] Started [0;1;39mShow Plymouth Boot Screen[0m. 103s [[0;32m OK [0m] Started [0;1;39mForward Password R���s to Plymouth Directory Watch[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mLocal Encrypted Volumes[0m. 103s plymouth-start.service 103s [[0;32m OK [0m] Found device [0;1;39m/dev/ttyAMA0[0m. 103s [[0;32m OK [0m] Found device [0;1;39m/dev/disk/by-label/UEFI[0m. 103s [[0;32m OK [0m] Listening on [0;1;39mLoad/Save RF ���itch Status /dev/rfkill Watch[0m. 103s Starting [0;1;39mLoad Kernel Module chromeos_pstore[0m... 103s Starting [0;1;39mLoad Kernel Module pstore_blk[0m... 103s Starting [0;1;39mLoad Kernel Module pstore_zone[0m... 103s [[0;32m OK [0m] Finished [0;1;39mLoad Kernel Module pstore_blk[0m. 103s [[0;32m OK [0m] Finished [0;1;39mLoad Kernel Module chromeos_pstore[0m. 103s [[0;32m OK [0m] Finished [0;1;39mLoad Kernel Module pstore_zone[0m. 103s systemd-udev-settle.service 103s [[0;32m OK [0m] Finished [0;1;39mudev Wait for Complete Device Initialization[0m. 103s Starting [0;1;39mDevice-Mapper Multipath Device Controller[0m... 103s [[0;32m OK [0m] Started [0;1;39mDevice-Mapper Multipath Device Controller[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mLocal File Systems (Pre)[0m. 103s multipathd.service 103s Starting [0;1;39mFile System Check on /dev/disk/by-label/UEFI[0m... 103s [[0;32m OK [0m] Started [0;1;39mFile System Check Daemon to report status[0m. 103s systemd-fsckd.service 103s [[0;32m OK [0m] Finished [0;1;39mFile System Check on /dev/disk/by-label/UEFI[0m. 103s systemd-fsck@dev-disk-by\x2dlabel-UEFI.service 103s Mounting [0;1;39m/boot/efi[0m... 103s boot-efi.mount 103s [[0;32m OK [0m] Mounted [0;1;39m/boot/efi[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mLocal File Systems[0m. 103s Starting [0;1;39mLoad AppArmor profiles[0m... 103s Starting [0;1;39mSet console font and keymap[0m... 103s Starting [0;1;39mCloud-init: Local Stage (pre-network)[0m... 103s Starting [0;1;39mTell Plymouth To Write Out Runtime Data[0m... 103s Starting [0;1;39mCreate Volatile Files and Directories[0m... 103s [[0;32m OK [0m] Finished [0;1;39mSet console font and keymap[0m. 103s console-setup.service 103s [[0;32m OK [0m] Finished [0;1;39mTell Plymouth To Write Out Runtime Data[0m. 103s [[0;32m OK [0m] Finished [0;1;39mCreate Volatile Files and Directories[0m. 103s Starting [0;1;39mNetwork Time Synchronization[0m... 103s Starting [0;1;39mUpdate UTMP about System Boot/Shutdown[0m... 103s systemd-tmpfiles-setup.service 103s [[0;32m OK [0m] Finished [0;1;39mUpdate UTMP about System Boot/Shutdown[0m. 103s systemd-update-utmp.service 103s [[0;32m OK [0m] Started [0;1;39mNetwork Time Synchronization[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mSystem Time Set[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mSystem Time Synchronized[0m. 103s systemd-timesyncd.service 103s [[0;32m OK [0m] Finished [0;1;39mLoad AppArmor profiles[0m. 103s apparmor.service 103s [ 4.913559] cloud-init[447]: Cloud-init v. 24.4.1-0ubuntu0~20.04.2 running 'init-local' at Mon, 07 Apr 2025 14:05:15 +0000. Up 3.39 seconds. 103s [[0;32m OK [0m] Finished [0;1;39mCloud-init: Local Stage (pre-network)[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mNetwork (Pre)[0m. 103s cloud-init-local.service 103s Starting [0;1;39mNetwork Service[0m... 103s [[0;32m OK [0m] Started [0;1;39mNetwork Service[0m. 103s Starting [0;1;39mWait for Network to be Configured[0m... 103s Starting [0;1;39mNetwork Name Resolution[0m... 103s systemd-networkd.service 103s [[0;32m OK [0m] Started [0;1;39mNetwork Name Resolution[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mNetwork[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mHost and Network Name Lookups[0m. 103s systemd-resolved.service 103s [[0;32m OK [0m] Finished [0;1;39mWait for Network to be Configured[0m. 103s systemd-networkd-wait-online.service 103s Starting [0;1;39mCloud-init: Network Stage[0m... 103s [ 7.250626] cloud-init[510]: Cloud-init v. 24.4.1-0ubuntu0~20.04.2 running 'init' at Mon, 07 Apr 2025 14:05:19 +0000. Up 7.11 seconds. 103s [ 7.250722] cloud-init[510]: ci-info: +++++++++++++++++++++++++++++++++++++++Net device info+++++++++++++++++++++++++++++++++++++++ 103s [ 7.250745] cloud-init[510]: ci-info: +--------+------+------------------------------+---------------+--------+-------------------+ 103s [ 7.250777] cloud-init[510]: ci-info: | Device | Up | Address | Mask | Scope | Hw-Address | 103s [ 7.250805] cloud-init[510]: ci-info: +--------+------+------------------------------+---------------+--------+-------------------+ 103s [ 7.250827] cloud-init[510]: ci-info: | enp1s0 | True | 10.151.35.6 | 255.255.255.0 | global | fa:16:3e:76:82:9a | 103s [ 7.250848] cloud-init[510]: ci-info: | enp1s0 | True | fe80::f816:3eff:fe76:829a/64 | . | link | fa:16:3e:76:82:9a | 103s [ 7.250890] cloud-init[510]: ci-info: | lo | True | 127.0.0.1 | 255.0.0.0 | host | . | 103s [ 7.250920] cloud-init[510]: ci-info: | lo | True | ::1/128 | . | host | . | 103s [ 7.250940] cloud-init[510]: ci-info: +--------+------+------------------------------+---------------+--------+-------------------+ 103s [ 7.250959] cloud-init[510]: ci-info: ++++++++++++++++++++++++++++++++Route IPv4 info++++++++++++++++++++++++++++++++ 103s [ 7.250978] cloud-init[510]: ci-info: +-------+-----------------+-------------+-----------------+-----------+-------+ 103s [ 7.251002] cloud-init[510]: ci-info: | Route | Destination | Gateway | Genmask | Interface | Flags | 103s [ 7.251027] cloud-init[510]: ci-info: +-------+-----------------+-------------+-----------------+-----------+-------+ 103s [ 7.251064] cloud-init[510]: ci-info: | 0 | 0.0.0.0 | 10.151.35.1 | 0.0.0.0 | enp1s0 | UG | 103s [ 7.251089] cloud-init[510]: ci-info: | 1 | 10.151.35.0 | 0.0.0.0 | 255.255.255.0 | enp1s0 | U | 103s [ 7.251116] cloud-init[510]: ci-info: | 2 | 169.254.169.254 | 10.151.35.2 | 255.255.255.255 | enp1s0 | UGH | 103s [ 7.251144] cloud-init[510]: ci-info: +-------+-----------------+-------------+-----------------+-----------+-------+ 103s [ 7.251164] cloud-init[510]: ci-info: +++++++++++++++++++Route IPv6 info+++++++++++++++++++ 103s [ 7.251183] cloud-init[510]: ci-info: +-------+-------------+---------+-----------+-------+ 103s [ 7.251208] cloud-init[510]: ci-info: | Route | Destination | Gateway | Interface | Flags | 103s [ 7.251234] cloud-init[510]: ci-info: +-------+-------------+---------+-----------+-------+ 103s [ 7.251263] cloud-init[510]: ci-info: | 1 | fe80::/64 | :: | enp1s0 | U | 103s [ 7.251284] cloud-init[510]: ci-info: | 3 | local | :: | enp1s0 | U | 103s [ 7.251303] cloud-init[510]: ci-info: | 4 | multicast | :: | enp1s0 | U | 103s [ 7.251327] cloud-init[510]: ci-info: +-------+-------------+---------+-----------+-------+ 103s [ 7.251349] cloud-init[510]: 2025-04-07 14:05:19,159 - schema.py[WARNING]: cloud-config failed schema validation! You may run 'sudo cloud-init schema --system' to check the details. 103s [ 7.720825] cloud-init[510]: Generating public/private rsa key pair. 103s [ 7.720922] cloud-init[510]: Your identification has been saved in /etc/ssh/ssh_host_rsa_key 103s [ 7.720957] cloud-init[510]: Your public key has been saved in /etc/ssh/ssh_host_rsa_key.pub 103s [ 7.720983] cloud-init[510]: The key fingerprint is: 103s [ 7.721016] cloud-init[510]: SHA256:r20Yxw6aFsMxx/mokK3IEYKH0nfNCug8ayGNyru6Fi8 root@autopkgtest 103s [ 7.721041] cloud-init[510]: The key's randomart image is: 103s [ 7.721065] cloud-init[510]: +---[RSA 3072]----+ 103s [ 7.721092] cloud-init[510]: | | 103s [ 7.721115] cloud-init[510]: | | 103s [ 7.721134] cloud-init[510]: |.o . + . | 103s [ 7.721162] cloud-init[510]: |= = o + * | 103s [ 7.721181] cloud-init[510]: |.B o * =S+ | 103s [ 7.721210] cloud-init[510]: |o.B o * +.+ | 103s [ 7.721230] cloud-init[510]: |ooo* o * *. | 103s [ 7.721259] cloud-init[510]: |.E=.. = .oo | 103s [ 7.721278] cloud-init[510]: |==+ . ... | 103s [ 7.721303] cloud-init[510]: +----[SHA256]-----+ 103s [ 7.721322] cloud-init[510]: Generating public/private ecdsa key pair. 103s [ 7.721342] cloud-init[510]: Your identification has been saved in /etc/ssh/ssh_host_ecdsa_key 103s [ 7.721367] cloud-init[510]: Your public key has been saved in /etc/ssh/ssh_host_ecdsa_key.pub 103s [ 7.721387] cloud-init[510]: The key fingerprint is: 103s [ 7.721413] cloud-init[510]: SHA256:fo1EU1eNzBIn47PJWfQrs9ixfHzD0rE81SWh1V90aOU root@autopkgtest 103s [ 7.721441] cloud-init[510]: The key's randomart image is: 103s [ 7.721461] cloud-init[510]: +---[ECDSA 256]---+ 103s [ 7.721488] cloud-init[510]: | =+*B*| 103s [ 7.721513] cloud-init[510]: | o.O*+=| 103s [ 7.721538] cloud-init[510]: | o +oo E| 103s [ 7.721562] cloud-init[510]: | . o * .=| 103s [ 7.721582] cloud-init[510]: | S . =+ oo| 103s [ 7.721607] cloud-init[510]: | . . o+ @ +| 103s [ 7.721631] cloud-init[510]: | . o..* X.| 103s [ 7.721660] cloud-init[510]: | . o +| 103s [ 7.721680] cloud-init[510]: | | 103s [ 7.721700] cloud-init[510]: +----[SHA256]-----+ 103s [ 7.721720] cloud-init[510]: Generating public/private ed25519 key pair. 103s [ 7.721745] cloud-init[510]: Your identification has been saved in /etc/ssh/ssh_host_ed25519_key 103s [ 7.721766] cloud-init[510]: Your public key has been saved in /etc/ssh/ssh_host_ed25519_key.pub 103s [ 7.721791] cloud-init[510]: The key fingerprint is: 103s [ 7.721812] cloud-init[510]: SHA256:HC5TTgsSV+2uwRvxj+Kxcw5BBpFRiMO/In4AJgn1m7Y root@autopkgtest 103s [ 7.721841] cloud-init[510]: The key's randomart image is: 103s [ 7.721863] cloud-init[510]: +--[ED25519 256]--+ 103s [ 7.721903] cloud-init[510]: | .....=Bo. | 103s [ 7.721931] cloud-init[510]: |. .+oo. . | 103s [ 7.721957] cloud-init[510]: |.. oo. *. | 103s [ 7.721983] cloud-init[510]: |+. +.X.o. | 103s [ 7.722009] cloud-init[510]: |o. + ooS+ | 103s [ 7.722033] cloud-init[510]: | o....o+.o | 103s [ 7.722054] cloud-init[510]: | . oE. o= o | 103s [ 7.722079] cloud-init[510]: | . . =+o . | 103s [ 7.722099] cloud-init[510]: | . .o=. | 103s [ 7.722124] cloud-init[510]: +----[SHA256]-----+ 103s cloud-init.service 103s [[0;32m OK [0m] Finished [0;1;39mCloud-init: Network Stage[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mCloud-config availability[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mNetwork is Online[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mSystem Initialization[0m. 103s [[0;32m OK [0m] Started [0;1;39mDaily apt download activities[0m. 103s [[0;32m OK [0m] Started [0;1;39mDaily apt upgrade and clean activities[0m. 103s [[0;32m OK [0m] Started [0;1;39mPeriodic ext4 Onli���ata Check for All Filesystems[0m. 103s [[0;32m OK [0m] Started [0;1;39mDiscard unused blocks once a week[0m. 103s [[0;32m OK [0m] Started [0;1;39mRefresh fwupd metadata regularly[0m. 103s [[0;32m OK [0m] Started [0;1;39mDaily rotation of log files[0m. 103s [[0;32m OK [0m] Started [0;1;39mDaily man-db regeneration[0m. 103s [[0;32m OK [0m] Started [0;1;39mMessage of the Day[0m. 103s [[0;32m OK [0m] Started [0;1;39mDaily Cleanup of Temporary Directories[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mPaths[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mTimers[0m. 103s [[0;32m OK [0m] Listening on [0;1;39mcloud-init hotplug hook socket[0m. 103s [[0;32m OK [0m] Listening on [0;1;39mD-Bus System Message Bus Socket[0m. 103s [[0;32m OK [0m] Listening on [0;1;39mUUID daemon activation socket[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mSockets[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mBasic System[0m. 103s Starting [0;1;39mLSB: automatic crash report generation[0m... 103s Starting [0;1;39mDeferred execution scheduler[0m... 103s [[0;32m OK [0m] Started [0;1;39mautopkgtest root shell on ttyS1[0m. 103s Starting [0;1;39mCloud-init: Config Stage[0m... 103s [[0;32m OK [0m] Started [0;1;39mRegular background program processing daemon[0m. 103s [[0;32m OK [0m] Started [0;1;39mD-Bus System Message Bus[0m. 103s autopkgtest@ttyS1.service 103s cron.service 103s dbus.service 103s [[0;32m OK [0m] Started [0;1;39mSave initial kernel messages after boot[0m. 103s Starting [0;1;39mRemove Stale Onli���t4 Metadata Check Snapshots[0m... 103s Starting [0;1;39mRecord successful boot for GRUB[0m... 103s dmesg.service 103s [[0;32m OK [0m] Started [0;1;39mirqbalance daemon[0m. 103s irqbalance.service 103s Starting [0;1;39mDispatcher daemon for systemd-networkd[0m... 103s Starting [0;1;39mAuthorization Manager[0m... 103s Starting [0;1;39mPollinate to seed���udo random number generator[0m... 103s [[0;32m OK [0m] Started [0;1;39mAdd entropy to /de���random 's pool a hardware RNG[0m. 103s rng-tools.service 103s Starting [0;1;39mSystem Logging Service[0m... 103s Starting [0;1;39mLogin Service[0m... 103s Starting [0;1;39mPermit User Sessions[0m... 103s Starting [0;1;39mDisk Manager[0m... 103s [[0;32m OK [0m] Started [0;1;39mDeferred execution scheduler[0m. 103s atd.service 103s [[0;32m OK [0m] Finished [0;1;39mRemove Stale Onli���ext4 Metadata Check Snapshots[0m. 103s [[0;32m OK [0m] Finished [0;1;39mPermit User Sessions[0m. 103s systemd-user-sessions.service 103s [[0;32m OK [0m] Started [0;1;39mSystem Logging Service[0m. 103s rsyslog.service 103s [[0;32m OK [0m] Finished [0;1;39mRecord successful boot for GRUB[0m. 103s [[0;32m OK [0m] Started [0;1;39mLSB: automatic crash report generation[0m. 103s apport.service 103s Starting [0;1;39mOnline ext4 Metad���a Check for All Filesystems[0m... 103s Starting [0;1;39mDiscard unused bl���filesystems from /etc/fstab[0m... 103s Starting [0;1;39mGRUB failed boot detection[0m... 103s Starting [0;1;39mHold until boot process finishes up[0m... 103s Starting [0;1;39mTerminate Plymouth Boot Screen[0m... 103s Starting [0;1;39mRotate log files[0m... 103s Starting [0;1;39mDaily man-db regeneration[0m... 103s [[0;32m OK [0m] Finished [0;1;39mOnline ext4 Metadata Check for All Filesystems[0m. 103s [[0;32m OK [0m] Finished [0;1;39mHold until boot process finishes up[0m. 103s [[0;32m OK [0m] Finished [0;1;39mTerminate Plymouth Boot Screen[0m. 103s [[0;32m OK [0m] Finished [0;1;39mRotate log files[0m. 103s [[0;32m OK [0m] Finished [0;1;39mGRUB failed boot detection[0m. 103s [ 8.791052] cloud-init[660]: Cloud-init v. 24.4.1-0ubuntu0~20.04.2 running 'modules:config' at Mon, 07 Apr 2025 14:05:20 +0000. Up 8.52 seconds. 103s 103s Ubuntu 20.04.6 LTS autopkgtest ttyAMA0 103s 103s autopkgtest login: [ 18.788129] cloud-init[733]: Hit:1 http://ftpmaster.internal/ubuntu focal InRelease 103s [ 18.818355] cloud-init[733]: Get:2 http://ftpmaster.internal/ubuntu focal-updates InRelease [128 kB] 103s [ 18.852113] cloud-init[733]: Get:3 http://ftpmaster.internal/ubuntu focal-security InRelease [128 kB] 103s [ 19.032127] cloud-init[733]: Get:4 http://ftpmaster.internal/ubuntu focal-updates/main Sources [630 kB] 103s [ 19.237451] cloud-init[733]: Get:5 http://ftpmaster.internal/ubuntu focal-updates/universe Sources [418 kB] 103s [ 19.270064] cloud-init[733]: Get:6 http://ftpmaster.internal/ubuntu focal-updates/main arm64 Packages [3001 kB] 103s [ 19.383840] cloud-init[733]: Get:7 http://ftpmaster.internal/ubuntu focal-updates/universe arm64 Packages [1190 kB] 103s [ 19.428071] cloud-init[733]: Get:8 http://ftpmaster.internal/ubuntu focal-security/main Sources [333 kB] 103s [ 19.461639] cloud-init[733]: Get:9 http://ftpmaster.internal/ubuntu focal-security/universe Sources [258 kB] 103s [ 19.500226] cloud-init[733]: Get:10 http://ftpmaster.internal/ubuntu focal-security/restricted Sources [56.9 kB] 103s [ 19.529375] cloud-init[733]: Get:11 http://ftpmaster.internal/ubuntu focal-security/main arm64 Packages [2687 kB] 103s [ 19.587770] cloud-init[733]: Get:12 http://ftpmaster.internal/ubuntu focal-security/universe arm64 Packages [964 kB] 103s [ 20.417823] cloud-init[733]: Fetched 9794 kB in 2s (6260 kB/s) 103s [ 21.093970] cloud-init[733]: Reading package lists... 103s ci-info: ++++++++++++++++++++++++++++++++++++++++++++++++++++++Authorized keys from /home/ubuntu/.ssh/authorized_keys for user ubuntu+++++++++++++++++++++++++++++++++++++++++++++++++++++++ 103s ci-info: +---------+-------------------------------------------------------------------------------------------------+---------+-----------------------------------------------------------+ 103s ci-info: | Keytype | Fingerprint (sha256) | Options | Comment | 103s ci-info: +---------+-------------------------------------------------------------------------------------------------+---------+-----------------------------------------------------------+ 103s ci-info: | ssh-rsa | 2a:d9:03:84:6a:0e:d7:a1:c3:3d:2c:94:92:f9:7f:cd:87:dd:2b:3e:c8:1b:1c:8c:69:cc:32:78:8b:3a:64:69 | - | ubuntu@juju-7f2275-prod-proposed-migration-environment-20 | 103s ci-info: | ssh-rsa | 87:eb:11:e6:d9:4d:64:37:d3:15:bc:fb:70:01:fb:c2:54:4a:7c:f0:03:f0:ca:42:74:a2:5a:a0:67:8b:da:f8 | - | ubuntu@juju-7f2275-prod-proposed-migration-environment-2 | 103s ci-info: +---------+-------------------------------------------------------------------------------------------------+---------+-----------------------------------------------------------+ 103s <14>Apr 7 14:05:33 cloud-init: ############################################################# 103s <14>Apr 7 14:05:33 cloud-init: -----BEGIN SSH HOST KEY FINGERPRINTS----- 103s <14>Apr 7 14:05:33 cloud-init: 256 SHA256:fo1EU1eNzBIn47PJWfQrs9ixfHzD0rE81SWh1V90aOU root@autopkgtest (ECDSA) 103s <14>Apr 7 14:05:33 cloud-init: 256 SHA256:HC5TTgsSV+2uwRvxj+Kxcw5BBpFRiMO/In4AJgn1m7Y root@autopkgtest (ED25519) 103s <14>Apr 7 14:05:33 cloud-init: 3072 SHA256:r20Yxw6aFsMxx/mokK3IEYKH0nfNCug8ayGNyru6Fi8 root@autopkgtest (RSA) 103s <14>Apr 7 14:05:33 cloud-init: -----END SSH HOST KEY FINGERPRINTS----- 103s <14>Apr 7 14:05:33 cloud-init: ############################################################# 103s -----BEGIN SSH HOST KEY KEYS----- 103s ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBKPpUQJiaWOfXcMVD/7zk78L/k+G0nmYvjTEOU0u2jhmcRQC+LP8IL3jbrWg+PMR/EkESTxNOm6yO13pLIBE7Gw= root@autopkgtest 103s ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIA6HjyPXp0YkyoqgJGZBz4x46xPiCgdxllzPbQmWdLhU root@autopkgtest 103s ssh-rsa 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 root@autopkgtest 103s -----END SSH HOST KEY KEYS----- 103s [ 21.184990] cloud-init[733]: Cloud-init v. 24.4.1-0ubuntu0~20.04.2 running 'modules:final' at Mon, 07 Apr 2025 14:05:30 +0000. Up 18.51 seconds. 103s [ 21.186137] cloud-init[733]: Cloud-init v. 24.4.1-0ubuntu0~20.04.2 finished at Mon, 07 Apr 2025 14:05:33 +0000. Datasource DataSourceOpenStackLocal [net,ver=2]. Up 21.17 seconds 103s [[0;32m OK [0m] Stopped [0;1;39mAuthorization Manager[0m. 103s [[0;32m OK [0m] Started [0;1;39mShow Plymouth Reboot Screen[0m. 103s plymouth-reboot.service 103s [[0;32m OK [0m] Stopped [0;1;39mUser Manager for UID 1000[0m. 103s Stopping [0;1;39mUser Runtime Directory /run/user/1000[0m... 103s [[0;32m OK [0m] Unmounted [0;1;39m/run/user/1000[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mUser Runtime Directory /run/user/1000[0m. 103s [[0;32m OK [0m] Removed slice [0;1;39mUser Slice of UID 1000[0m. 103s Stopping [0;1;39mD-Bus System Message Bus[0m... 103s Stopping [0;1;39mPermit User Sessions[0m... 103s [[0;32m OK [0m] Stopped [0;1;39mD-Bus System Message Bus[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mPermit User Sessions[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mNetwork[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mRemote File Systems[0m. 103s Stopping [0;1;39mNetwork Name Resolution[0m... 103s [[0;32m OK [0m] Stopped [0;1;39mNetwork Name Resolution[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mLogin Service[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mBasic System[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mForward Password R���s to Plymouth Directory Watch[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mPaths[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mSlices[0m. 103s [[0;32m OK [0m] Removed slice [0;1;39mUser and Session Slice[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mSockets[0m. 103s [[0;32m OK [0m] Closed [0;1;39mD-Bus System Message Bus Socket[0m. 103s [[0;32m OK [0m] Closed [0;1;39mSyslog Socket[0m. 103s [[0;32m OK [0m] Closed [0;1;39mUUID daemon activation socket[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mSystem Initialization[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mLocal Encrypted Volumes[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mForward Password R���uests to Wall Directory Watch[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mSwap[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mCloud-init: Network Stage[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mWait for Network to be Configured[0m. 103s Stopping [0;1;39mNetwork Service[0m... 103s Stopping [0;1;39mNetwork Time Synchronization[0m... 103s Stopping [0;1;39mUpdate UTMP about System Boot/Shutdown[0m... 103s [[0;32m OK [0m] Stopped [0;1;39mUpdate UTMP about System Boot/Shutdown[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mNetwork Time Synchronization[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mCreate Volatile Files and Directories[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mLocal File Systems[0m. 103s Unmounting [0;1;39m/boot/efi[0m... 103s [[0;32m OK [0m] Stopped [0;1;39mNetwork Service[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mNetwork (Pre)[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mCloud-init: Local Stage (pre-network)[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mApply Kernel Variables[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mLoad Kernel Modules[0m. 103s [[0;32m OK [0m] Unmounted [0;1;39m/boot/efi[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mUnmount All Filesystems[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mFile System Check on /dev/disk/by-label/UEFI[0m. 103s [[0;32m OK [0m] Removed slice [0;1;39msystem-systemd\x2dfsck.slice[0m. 103s [[0;32m OK [0m] Stopped target [0;1;39mLocal File Systems (Pre)[0m. 103s Stopping [0;1;39mDevice-Mapper Multipath Device Controller[0m... 103s [[0;32m OK [0m] Stopped [0;1;39mCreate Static Device Nodes in /dev[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mCreate System Users[0m. 103s [[0;32m OK [0m] Stopped [0;1;39mRemount Root and Kernel File Systems[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mShutdown[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mFinal Step[0m. 103s [[0;32m OK [0m] Finished [0;1;39mReboot[0m. 103s [[0;32m OK [0m] Reached target [0;1;39mReboot[0m. 103s [ 51.234361] reboot: Restarting system 103s [2J[01;01H[=3h[2J[01;01H 103s --------------------------------------------------- 103s ------- nova show 4b530d7a-0e6f-4ec4-bdea-8f004bbf9875 (adt-focal-arm64-dm-writeboost-20250407-134938-juju-7f2275-prod-proposed-migration-environment-2-269f62ad-2f5b-488e-b21e-6b3efc92b797) ------ 103s +--------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+ 103s | Property | Value | 103s +--------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+ 103s | OS-DCF:diskConfig | MANUAL | 103s | OS-EXT-AZ:availability_zone | AZ2 | 103s | OS-EXT-SRV-ATTR:host | ps7-ra3-arm64-n1.ps7.canonical.com | 103s | OS-EXT-SRV-ATTR:hostname | adt-focal-arm64-dm-writeboost-20250407-134938-juju-7f2275-prod | 103s | OS-EXT-SRV-ATTR:hypervisor_hostname | ps7-ra3-arm64-n1.ps7.canonical.com | 103s | OS-EXT-SRV-ATTR:instance_name | instance-0000c92c | 103s | OS-EXT-SRV-ATTR:kernel_id | | 103s | OS-EXT-SRV-ATTR:launch_index | 0 | 103s | OS-EXT-SRV-ATTR:ramdisk_id | | 103s | OS-EXT-SRV-ATTR:reservation_id | r-hn3ux88k | 103s | OS-EXT-SRV-ATTR:root_device_name | /dev/vda | 103s | OS-EXT-STS:power_state | 1 | 103s | OS-EXT-STS:task_state | - | 103s | OS-EXT-STS:vm_state | active | 103s | OS-SRV-USG:launched_at | 2025-04-07T14:05:02.000000 | 103s | OS-SRV-USG:terminated_at | - | 103s | accessIPv4 | | 103s | accessIPv6 | | 103s | config_drive | | 103s | created | 2025-04-07T14:04:57Z | 103s | description | - | 103s | flavor:disk | 20 | 103s | flavor:ephemeral | 0 | 103s | flavor:extra_specs | {"aggregate_instance_extra_specs:commit": "arm64", "hw:cpu_policy": "shared", "hw:mem_page_size": "large", "hw:pci_numa_affinity_policy": "preferred"} | 103s | flavor:original_name | autopkgtest-cpu2-ram4-disk20-arm64 | 103s | flavor:ram | 4096 | 103s | flavor:swap | 0 | 103s | flavor:vcpus | 2 | 103s | hostId | fb96f3cf18ee955f9ff47534bb00f09a9074d8ddb8c6f60136868049 | 103s | id | 4b530d7a-0e6f-4ec4-bdea-8f004bbf9875 | 103s | image | adt/ubuntu-focal-arm64-server-20250404.img (82a1a68a-d67b-484b-bdb5-49bf84281933) | 103s | key_name | testbed-juju-7f2275-prod-proposed-migration-environment-2 | 103s | locked | False | 103s | locked_reason | - | 103s | metadata | {} | 103s | name | adt-focal-arm64-dm-writeboost-20250407-134938-juju-7f2275-prod-proposed-migration-environment-2-269f62ad-2f5b-488e-b21e-6b3efc92b797 | 103s | net_prod-autopkgtest-workers-arm64 network | 10.151.35.6 | 103s | os-extended-volumes:volumes_attached | [] | 103s | progress | 0 | 103s | security_groups | autopkgtest-juju-7f2275-prod-proposed-migration-environment-2@sto01-arm64-4.secgroup | 103s | server_groups | [] | 103s | status | ACTIVE | 103s | tags | [] | 103s | tenant_id | e27006f5eb9946719a589a78f7f099f8 | 103s | trusted_image_certificates | - | 103s | updated | 2025-04-07T14:05:02Z | 103s | user_id | 5676cac36e4942629c54e24741ff7157 | 103s +--------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+ 103s --------------------------------------------------- 103s 118s nova [W] Using flock in prodstack7-arm64 118s Creating nova instance adt-focal-arm64-dm-writeboost-20250407-134938-juju-7f2275-prod-proposed-migration-environment-2-269f62ad-2f5b-488e-b21e-6b3efc92b797 from image adt/ubuntu-focal-arm64-server-20250404.img (UUID 82a1a68a-d67b-484b-bdb5-49bf84281933)... 118s nova [W] Timed out waiting for 4b530d7a-0e6f-4ec4-bdea-8f004bbf9875 to get deleted. 118s autopkgtest [14:06:21]: ERROR: testbed failure: testbed auxverb failed with exit code 255