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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: siemens.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: AM9PR10MB4869.EURPRD10.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-Network-Message-Id: 6624b20e-9d1c-41d4-30b5-08da6b2f6de2 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Jul 2022 15:41:07.6740 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 38ae3bcd-9579-4fd4-adda-b42e1495d55a X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: XYSZ/PurvIoPAGL+pvBdu8r5OTQ3+n+frvGgOnmwVGbrTUpam8Mefqu1lYy5GS84YQ7UJRnPXlepZ65rgIR2rT8YBoGXrh6NhcJiBr+bIAI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB9PR10MB5138 X-TUID: cmWmvDEuTwNo Hi, when booting plain ISAR images (with Debian11), the "/etc/machine-id" is ne= ver generated. This breaks a couple of services that depend on having the id. An example is the systemd-networkd with DHCP, leading to error messages lik= e this one (and breaking networking): systemd-networkd[277]: enp8s0: DHCP6 CLIENT: Failed to set identifier: No s= uch file or directory The error can manually be fixed by running "systemd-machine-id-setup", but = this obviously does not work in embedded scenarios. The root cause could be that /etc is read-only mounted when the first-boot-= complete.target is reached. At least the logs indicate this: journalctl --grep machine --no-pager -- Journal begins at Thu 2022-07-21 15:07:21 UTC, ends at Thu 2022-07-21 15= :35:20 UTC. -- Jul 21 15:07:21 test-image systemd[1]: System cannot boot: Missing /etc/mac= hine-id and /etc is mounted read-only. Jul 21 15:07:21 test-image systemd[1]: 1) /etc/machine-id exists and is pop= ulated. Jul 21 15:07:21 test-image systemd[1]: 2) /etc/machine-id exists and is emp= ty. Jul 21 15:07:21 test-image systemd[1]: 3) /etc/machine-id is missing and /e= tc is writable. Jul 21 15:07:24 test-image systemd[1]: Condition check resulted in Commit a= transient machine-id on disk being skipped. Maybe Quirin knows more, as he implemented the postproc removal in 8b5e3f9. IIRC Jan also mentioned something that "rw" has to be added to the kernel c= mdline, but this looks like a workaround as well. For the sake of completeness: cat /proc/cmdline initrd=3D\initrd.img-5.10.0-16-amd64 LABEL=3DBoot root=3DPARTUUID=3D9ad286e= 9-8df8-42c2-ac7d-0f2d7387d03d rootwait console=3Dtty0 console=3DttyS0,11520= 0 IMO this is a pretty critical bug as it affects a ton of images. Best regards, Felix -- Siemens AG, Linux Expert Center Otto-Hahn-Ring 6, 81739 M=FCnchen, Germany