Public bug reported: In testing, a raid5 array is started and mounted, but at some point the mdadm-last-resort@md0.service is triggered and unmounts the raid device.
This is fixed upstream with: https://github.com/neilbrown/mdadm/commit/5c4b3b9aa9f576305b36d5ccbd4b929b51307ce9 1. ubuntu@ubuntu:~$ lsb_release -rd Description: Ubuntu 17.10 Release: 17.10 2. ubuntu@ubuntu:~$ apt-cache policy mdadm mdadm: Installed: 4.0-2 Candidate: 4.0-2 Version table: *** 4.0-2 500 500 http://archive.ubuntu.com/ubuntu artful/main amd64 Packages 100 /var/lib/dpkg/status 3. /dev/md0 stays mounted after boot 4. /dev/md0 is unmounted from the system due to mdadm-last-resort@md0.service running ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: mdadm 4.0-2 [modified: lib/systemd/system/mdadm-last-resort@.service] ProcVersionSignature: User Name 4.13.0-36.40-generic 4.13.13 Uname: Linux 4.13.0-36-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.7 Architecture: amd64 Date: Tue Mar 6 16:03:25 2018 Lsusb: Error: command ['lsusb'] failed with exit code 1: MDadmExamine.dev.sda: Error: command ['/sbin/mdadm', '-E', '/dev/sda'] failed with exit code 1: mdadm: cannot open /dev/sda: Permission denied MDadmExamine.dev.sdb: Error: command ['/sbin/mdadm', '-E', '/dev/sdb'] failed with exit code 1: mdadm: cannot open /dev/sdb: Permission denied MDadmExamine.dev.sdc: Error: command ['/sbin/mdadm', '-E', '/dev/sdc'] failed with exit code 1: mdadm: cannot open /dev/sdc: Permission denied MachineType: QEMU Standard PC (i440FX + PIIX, 1996) ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=C.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-36-generic root=UUID=413f8b88-2156-11e8-93a3-525400123400 ro console=ttyS0 ProcMDstat: Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid5 sdc[1] sdb[0] sda[3] 10477568 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3] [UUU] unused devices: <none> SourcePackage: mdadm UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/01/2014 dmi.bios.vendor: SeaBIOS dmi.bios.version: 1.10.2-1ubuntu1 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: pc-i440fx-bionic dmi.modalias: dmi:bvnSeaBIOS:bvr1.10.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-bionic:cvnQEMU:ct1:cvrpc-i440fx-bionic: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-bionic dmi.sys.vendor: QEMU etc.blkid.tab: Error: [Errno 2] No such file or directory: '/etc/blkid.tab' mdadm.conf: ARRAY /dev/md0 metadata=1.2 spares=1 name=ubuntu:0 UUID=aefcb03c:f7588463:d51ac0c1:3dfa8d62 MAILADDR root ** Affects: mdadm (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug artful curtin uec-images -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1753786 Title: mdadm-last-resort@.service runs when array is active To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1753786/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
