Mainline 4.20-rc2 has the bug. I went back and tested mainline 4.18-rc1 and mainline 4.18 a few more times, and they actually do have the bug. So it appears that the bug is not fixed upstream after all.
Shall we go back to bisecting for the change that introduced the bug? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1752961 Title: With kernel 4.13 btrfs scans for devices before all devices have been discovered Status in linux package in Ubuntu: In Progress Status in linux source package in Artful: Won't Fix Status in linux source package in Bionic: In Progress Status in linux source package in Cosmic: In Progress Bug description: See attached dmesg outputs for booting kernels 4.11.x (working) and 4.13.x (not working). dmesg-4.11.0-14-good.txt shows the dmesg output when booting kernel 4.11.x. btrfs scans for devices after all 4 (sda, sdb, sdc, sdd) of the devices have been discovered by the kernel. The btrfs RAID1 filesystem mounts, and everything is good. dmesg-4.13.0-36-fail.txt shows the dmesg output when booting kernel 4.13.x. btrfs scans for devices after only 2 (sda, sdb) of the devices have been discovered by the kernel. The btrfs RAID1 filesystem fails to mount ("failed to read the system array: -5"). The remaining 2 devices (sdc, sdd) are discovered by the kernel immediately afterward. At the end of the log, I run `btrfs device scan` and mount the filesystem manually. Hardware: HP ProLiant MicroServer Gen8 4x WDC WD20EFRX --- AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access '/dev/snd/': No such file or directory AplayDevices: aplay: device_list:270: no soundcards found... ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 ArecordDevices: arecord: device_list:270: no soundcards found... DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2015-10-15 (933 days ago) InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1) MachineType: HP ProLiant MicroServer Gen8 Package: linux (not installed) ProcEnviron: TERM=linux PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.15.0-20-generic root=UUID=d976ab07-8377-46dd-ac6c-f5f7312a8305 ro rootflags=subvol=@ rootdelay=10 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. Tags: bionic apport-hook-error Uname: Linux 4.15.0-20-generic x86_64 UnreportableReason: This report is about a package that is not installed. UpgradeStatus: Upgraded to bionic on 2018-05-05 (0 days ago) UserGroups: _MarkForUpload: True dmi.bios.date: 07/16/2015 dmi.bios.vendor: HP dmi.bios.version: J06 dmi.chassis.type: 7 dmi.chassis.vendor: HP dmi.modalias: dmi:bvnHP:bvrJ06:bd07/16/2015:svnHP:pnProLiantMicroServerGen8:pvr:cvnHP:ct7:cvr: dmi.product.family: ProLiant dmi.product.name: ProLiant MicroServer Gen8 dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1752961/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
