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[85.214.156.166]) by gmr-mx.google.com with ESMTPS id w15-20020a1cf60f000000b003497ca2a0f8si212309wmc.1.2022.02.24.22.12.48 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Thu, 24 Feb 2022 22:12:48 -0800 (PST) Received-SPF: pass (google.com: domain of amikan@ilbers.de designates 85.214.156.166 as permitted sender) client-ip=85.214.156.166; Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of amikan@ilbers.de designates 85.214.156.166 as permitted sender) smtp.mailfrom=amikan@ilbers.de Received: from [127.0.0.1] (host-80-81-17-52.static.customer.m-online.net [80.81.17.52]) (authenticated bits=0) by shymkent.ilbers.de (8.15.2/8.15.2/Debian-8) with ESMTPSA id 21P6Ckjj001289 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 25 Feb 2022 07:12:48 +0100 Message-ID: Date: Fri, 25 Feb 2022 09:12:47 +0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: [PATCH 0/1] enable-fsck: Run after udev devices coldplugged Content-Language: en-US To: Uladzimir Bely , isar-users@googlegroups.com References: <20220218053745.31243-1-ubely@ilbers.de> From: Anton Mikanovich In-Reply-To: <20220218053745.31243-1-ubely@ilbers.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED autolearn=unavailable autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on shymkent.ilbers.de X-TUID: Xq5bxOaIQEft Applied to next, thanks. 18.02.2022 08:37, Uladzimir Bely wrote: > Earlier patch removing `update-initramfs` call from enable-fsck script > (`enable-fsck: don't run update-initramfs after fstab modification`) > discovered a bug that happens in arm/arm64 qemu targets. > > Without running `update-initramfs`, this one-time service is executed > now very quickly and it creates terms when systemd can't find `ttyAMA0` > device and is unable to run serial getty on it. > > Failed log: > | [ TIME ] Timed out waiting for device /dev/ttyAMA0. > | [DEPEND] Dependency failed for Serial Getty on ttyAMA0. > > Normal (expected) log: > | [ OK ] Found device /dev/ttyAMA0. > | [ OK ] Started Serial Getty on ttyAMA0. > > There is no direct relation between device handling and `enable-fsck`, > but enabling this "fast" service, due its "After" and "Before" service > dependencies leads to this device issue. > > There are 3 possible situations: > > 1. `enable-fsck` is disabled: > - Boot is OK in this case > > 2. `enable-fsck` is enabled and executed fast (only fstab modified): > - Boot fails, device `/dev/ttyAMA0` is not found by systemd > > 3. `enable-fsck` is enabled and executed slow (can be simply achieved > by adding "sleep 10" to `/usr/share/enable-fsck/enable-fsck.sh`: > - Boot is OK in this case > > Case 3 earlier was the main case, while "update-initramfs" was that > slow operation that was "fixing" the issue. > > The problem looks like some race in services. It is probably related > to Debian and/or Qemu. > > The patch below is a workaround that adds some udev dependency to the > `enable-fsck` service, so it now runs after udev devices coldplugged. > > Uladzimir Bely (1): > enable-fsck: Run after udev devices coldplugged > > meta/recipes-support/enable-fsck/files/enable-fsck.service | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) >