12644 2018-04-03 00:13:30 +0000 Can't format block devices related to systemd-udevd.service and udev-extraconf 2018-09-26 10:51:37 +0000 1 1 7 Build System, Metadata & Runtime OE-Core core 2.4 x86 x86 RESOLVED FIXED Medium+ critical 2.6 M4 1 hongzhi.song hongzhi.song meta.mr.watcher meta.watcher randy.macleod ross.burton stephano --- --- No (bug/feature does not impact docs) oldest_to_newest 80071 0 4254 hongzhi.song 2018-04-03 00:13:30 +0000 Created attachment 4254 systemd maintainer's advice 1)Overview: Block device media can't be format by command:mkfs.ext4, with systemd as init manager and udev-extraconf installed. 2)Bitbake information: Build Configuration: BB_VERSION = "1.37.0" BUILD_SYS = "x86_64-linux" NATIVELSBSTRING = "universal-4.8" TARGET_SYS = "i586-poky-linux" MACHINE = "qemux86" DISTRO = "poky" DISTRO_VERSION = "2.4+snapshot-20180403" TUNE_FEATURES = "m32 i586" TARGET_FPU = "" meta meta-poky meta-yocto-bsp = "master:4574ad343888fd57eabadbcbae5f8123709a6461" 3)Steps to Reproduce: 1. git clone git://git.yoctoproject.org/poky 2. branch is master 3. add follow statements to conf/local.conf IMAGE_FSTYPES += "tar.bz2 ext4" VIRTUAL-RUNTIME_init_manager = "systemd" DISTRO_FEATURES_append = " systemd" DISTRO_FEATURES_BACKFILL_CONSIDERED += "sysvinit" KERNEL_FEATURES_append = " cfg/systemd.scc" IMAGE_INSTALL_append = " e2fsprogs-mke2fs" IMAGE_INSTALL_append = " udev-extraconf" 4. bitbake core-image-minimal 5. dd if=/dev/zero of=b.img bs=100m count=1 mkfs.ext3 b.img 6. Boot system with qemu runqemu qemux86 slirp nographic qemuparams="-hda b.img" 7. root@qemux86:~# fdisk /dev/hda -l Disk /dev/hda: 100 MB, 104857600 bytes, 204800 sectors 12 cylinders, 255 heads, 63 sectors/track Units: cylinders of 16065 * 512 = 8225280 bytes 8. root@qemux86:~# mount | grep hda root@qemux86:~# umount /dev/hda umount: can't unmount /dev/hda: Invalid argument 9. root@qemux86:~# cat /etc/udev/mount.blacklist /dev/loop /dev/ram /dev/mtdblock /dev/md /dev/dm-* 10. format /dev/hda using command:mkfs.ext4 root@qemux86:~# mkfs.ext4 /dev/hda mke2fs 1.43.8 (1-Jan-2018) /dev/hda contains a ext4 file system last mounted on Tue Apr 3 06:22:41 2018 Proceed anyway? (y,N) y /dev/hda is apparently in use by the system; will not make a filesystem here! 4)Actual Results: All block media processed by systemd-udevd.service can't be formated, if they dosen't exist in /etc/udev/mount.blacklist. 5) Attachments are my local.conf and email discussion with systemd maintainer. 80116 1 randy.macleod 2018-04-05 07:55:38 +0000 Isn't this a limitation of qemu perhaps? Can you reproduce the problem on hardware? 80157 2 hongzhi.song 2018-04-07 18:40:29 +0000 (In reply to comment #1) > Isn't this a limitation of qemu perhaps? Can you reproduce the problem on > hardware? No, it isn't limited to qemu. I tried several x86-cpus which can reproduce the problem. In fact, it has nothing to do with hardware but with how systemd-udevd works. 80160 3 randy.macleod 2018-04-08 18:17:39 +0000 I don't understand why you think this is a problem. The upstream maintainer has given you a method whereby you *could* have a single partition and yet still format it after boot time. Am I missing something about how many partitions you have since the root partition can't usually be umounted or formatted when it is in use. 80162 4 hongzhi.song 2018-04-08 19:08:43 +0000 (In reply to comment #3) > I don't understand why you think this is a problem. > > The upstream maintainer has given you a method whereby you *could* have a > single partition and yet still format it after boot time. Am I missing > something about how many partitions you have since the root partition can't > usually be umounted or formatted when it is in use. Sorry, I didn't accurate enough to describe it. The root of problem comes from systemd-udevd.service and udev-extraconf recipe. Systemd-udevd.service has a variable, MountFlag that is set 'slave', this means udev will mount all block devices within itself namespace and devices can't be formatted by host space. 80616 5 hongzhi.song 2018-05-17 18:20:39 +0000 https://patchwork.openembedded.org/patch/150168/ 81627 6 ross.burton 2018-09-26 10:51:37 +0000 Merged in oe-core 4af22800a7af4fcb80cafe08d982a4850d9dd2ad. 4254 2018-04-03 00:13:30 +0000 2018-04-03 00:13:30 +0000 systemd maintainer's advice file_12644.txt text/plain 2610 hongzhi.song V2VsbCwgd2UgZ2VuZXJhbGx5IHRyeSB0byBydW4gYWxsIG91ciBzZXJ2aWNlcyB3aXRoIHNhbmRi b3hlcyB0aGF0IGFyZQ0KYXMgdGlnaHQgYXMgd2UgY2FuIG1ha2UgdGhlbS4gdWRldiBjYW4gcnVu IGFyYml0cmFyeSBzdHVmZiBmcm9tIGl0cw0KcnVsZXMgaGVuY2UgdGhlIHNhbmRib3ggY2FuJ3Qg YmUgbWFkZSB0b28gdGlnaHQgdW5mb3J0dW5hdGVseS4NCg0KTW91bnRGbGFncz1zbGF2ZSBpcyBl c3NlbnRpYWxseSBhIHNhbmRib3hpbmcgc2V0dGluZzogaXQgZGV0YWNoZXMNCm1vdW50KCkgb3Bl cmF0aW9ucyBkb25lIHdpdGhpbiB0aGUgc2VydmljZSBmcm9tIHRoZSByZXN0IG9mIHRoZQ0Kc3lz dGVtLg0KDQpXaGlsZSB1ZGV2IHJ1bGVzIGNhbiBkbyBwcmV0dHkgbXVjaCBldmVyeXRoaW5nLCB3 ZSBkbyBrbm93IHRoYXQgZG9pbmcNCm1vdW50IG9wZXJhdGlvbnMgdGhlbXNlbHZlcyBpcyBub3Qg dGhlIGJlc3Qgb2YgaWRlYXMsIGFuZCB0aGVyZSBhcmUNCmJldHRlciBhcHByb2FjaGVzLiBUaGF0 J3MgYmVjYXVzZSB1ZGV2IHJ1bGVzIHNob3VsZCBiZSBxdWljaywgYW5kDQptb3VudGluZyBpc24n dCBuZWNlc3NhcmlseSAoaW4gcGFydGljdWxhciBvbiBkaXJ0eSBmcykuDQoNClNwZWNpZmNhbGx5 LCB0aGVyZSBhcmUgdGhyZWUgc2NoZW1lcyB0aGF0IGFyZSBtdWNoIHByZWZlcmFibGU6DQoNCjEu IFVzZSBUQUcrPSJzeXN0ZW1kIiwgRU5We1NZU1RFTURfV0FOVFN9Kz0iZm9vYmFyLm1vdW50IiBp biB1ZGV2DQogICBydWxlcyB0byBhc3luY2hyb25vdXNseSBwdWxsIGluIG1vdW50IHVuaXRzIGZy b20gdWRldiBydWxlcy4gDQoNCjIuIEludm9rZSAic3lzdGVtZC1tb3VudCIgZnJvbSB1ZGV2IHJ1 bGVzLCB3aGljaCB3aWxsIHNwYXduIHRyYW5zaWVudA0KICAgYXV0b21vdW50IGFuZCBtb3VudCB1 bml0cyBmb3IgZGV2aWNlcy4gVGhpcyBpcyBnZW5lcmFsbHkgdGhlIGJlc3QNCiAgIHdheSBpbiBw YXJ0aWN1bGFyIGluIGVtYmVkZGVkIGFwcGxpY2F0aW9ucyB0byBkZWFsIHdpdGgNCiAgIGhvdHBs dWdnYWJsZSBtZWRpYS4gSXQgb3B0aW9uYWxseSBydW5zIGZzY2sgYmVmb3JlIG1vdW50aW5nIGZv cg0KICAgeW91LCBhbmQgaXQgaXQgdXNlcyBhdXRvbW91bnRzIGZvciBrZWVwaW5nIHRoZSBhY3R1 YWwgd2luZG93IHdoZW4gYQ0KICAgZGV2aWNlIGlzIG1vdW50ZWQgYXMgYnJpZWYgYXMgcG9zc2li bGUsIGluIG9yZGVyIHRvIG1heGltaXplIHRoZQ0KICAgY2hhbmNlIHRoYXQgdGhlIGZpbGUgc3lz dGVtIHJlbWFpbnMgaW4gYSBmdWxseSBjbGVhbiBzdGF0ZSwgc2luY2UNCiAgIGl0J3MgZXNzZW50 aWFsbHkgdW5tb3VudGVkIHdoZW5ldmVyIGlkbGUuIElmIHlvdSBoYXZlIGhvdHBsdWcgbWVkaWEN CiAgIHRoaXMgbWVhbnMgeW91IGdldCB0aGUgYmVzdCBjaGFuY2Ugb2YgbGVhdmluZyB0aGUgZnMg aW4gYSBjbGVhbg0KICAgc3RhdGUsIGFuZCBnZXR0aW5nIGl0IGJhY2sgaW50byBhIGNsZWFuIHN0 YXRlIGlmIGl0IGV2ZXJzIGdldHMgaW50bw0KICAgYW4gdW5jbGVhbiBzdGF0ZS4NCg0KMy4gVXNl IGEgZGFlbW9uIHN1Y2ggYXMgdWRpc2tzIHRvIG1hbmFnZSBob3RwbHVncyBvZiBkZXZpY2VzLg0K DQpUaGF0IGFsbCBzYWlkLCB5b3UgY2FuIGFsc28gZGV2aWF0ZSBmcm9tIHVwc3RyZWFtIGFuZCBz aW1wbHkgZHJvcCB0aGUNCk1vdW50RmxhZ3M9c2xhdmUsIGJ1dCBvZiBjb3Vyc2UsIHRoaXMgbWVh bnMgeW91IGxvc2UgY29tcGF0aWJpbGl0eQ0Kd2l0aCB1cHN0cmVhbSBvbiB0aGlzLg0KDQoic3lz dGVtZC1tb3VudCIgdGFsa3MgdG8gc3lzdGVtZCAoaS5lLiBQSUQgMSkgdG8gaXNzdWUgbW91bnQv YXV0b21vdW50DQpvcGVyYXRpb25zLiBCeSBkZWZhdWx0IGl0IHdpbGwgZG8gc28gc3luY2hyb25v dXNseSwgdGh1cyBibG9ja2luZw0KdW50aWwgdGhlIG1vdW50IGlzIGVzdGFibGlzaGVkLiBJZiB5 b3Ugc3BlY2lmeSAiLS1uby1ibG9jayIgdGhlbiB5b3UNCnR1cm4gb2ZmIHRoaXMgc3luY2hyb25v dXMgYmVoYXZpb3VyLCBhbmQgaW5zdGVhZCByZXF1ZXN0IGFzeW5jaHJvbm91cw0KYmVoYXZpb3Vy LCB3aGVyZSB0aGUgcnVsZSB3aWxsIGp1c3QgcmVxdWVzdCB0aGUgb3BlcmF0aW9uIHRvIGJlDQpl eGVjdXRlZCwgYnV0IHdvbid0IHdhaXQgZm9yIGl0IHRvIGZpbmlzaC4gV2hlbiB5b3UgaW52b2tl DQoic3lzdGVtZC1tb3VudCIgZnJvbSBhIHVkZXYgcnVsZSB0aGVuIHVzaW5nICItLW5vLWJsb2Nr IiBpcyBhDQpuZWNlc3NpdHkgdG8gYXZvaWQgYSBkZWFkbG9jay4gVGhhdCdzIGJlY2F1c2UgUElE IDEgd29uJ3Qgb3BlcmF0ZSBvbiBhDQpkZXZpY2UgdG8gbW91bnQgYmVmb3JlIHVkZXYgcmVwb3J0 ZWQgaXQgdG8gYmUgZnVsbHkgYXZhaWxhYmxlZCBhbmQNCnByb2JlZC4gTm93LCBpZiBzeW5jaHJv bm91c2x5IHdhaXQgZm9yIHRoYXQgZnJvbSBpbnNpZGUgdGhlIHVkZXYgcnVsZQ0KeW91IGhlbmNl IGRlbGF5IHByZWNpc2VseSB0aGF0IHByb2JpbmcgZm9yZXZlci4NCg0Kc3lzdGVtZC1tb3VudCBy ZXF1ZXN0IHRoZSBtb3VudCBvcGVyYXRpb24gdG8gYmUgZXhlY3V0ZWQgYnkgUElEIDEsIGFuZA0K aGVuY2Ugb3V0c2lkZSBvZiB0aGUgbW91bnQgY29udGV4dCBvZiB1ZGV2Lg0K