so I removed the bcache LUKS device thing from the equation: I commented it out the relevant line for home in /etc/crypttab and /etc/fstab to use a dummy empty folder for /home on the main root SSD partition
and rebooted and this still happens, this time it is $ systemd-analyze blame|head -5 32.510s systemd-udev-settle.service 31.394s dev-disk-by\x2duuid-xxxxxxx\x2xxxxx\x2xxxx\x2xxxx\x2xxxxxxxxxdevice 30.908s systemd-fsck-root.service 7.616s plymouth-quit-wait.service 7.195s NetworkManager-wait-online.service -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1439445 Title: systemd-fsck laps 30s on boot for /dev/mapper/home Status in systemd package in Ubuntu: New Bug description: Using 15.04 beta 2 witht the following setup: /dev/sda is a SSD (crucial mx100) in main SATA port of Inspiron 15 3521 /dev/sdb is a hdd in an hdd caddy in sata original dvd drive bay root is /dev/sda4 on SSD /dev/sda5 is a caching bcache partition (on SSD) for the /dev/sdb5 bcache backing LUKS home partition /etc/crypttab: home /dev/bcache0 /root/.xxxxxxxxx-64bd-44ca-a46e-xxxxxxxxxx.bin luks For an unknown reason, during boot, systemd-fsck laps 30s for doing a fsck on /dev/mapper/home. But the fsck is not really run, it should return immediatly $ systemd-analyze blame|head -3 32.241s systemd-fsck@dev-mapper-home.service 8.137s plymouth-quit-wait.service 7.691s NetworkManager-wait-online.service $ systemctl status systemd-fsck@dev-mapper-home.service ● systemd-fsck@dev-mapper-home.service - File System Check on /dev/mapper/home Loaded: loaded (/lib/systemd/system/systemd-fsck@.service; static; vendor preset: enabled) Active: active (exited) since mer. 2015-04-01 22:45:58 CEST; 2h 45min ago Docs: man:systemd-fsck@.service(8) Main PID: 821 (code=exited, status=0/SUCCESS) avril 01 22:45:58 callisto systemd-fsck[821]: Cannot communicate fsck progress to fsckd: Broken pipe avril 01 22:45:58 callisto systemd-fsck[821]: Cannot communicate fsck progress to fsckd: Broken pipe avril 01 22:45:58 callisto systemd-fsck[821]: Cannot communicate fsck progress to fsckd: Broken pipe avril 01 22:45:58 callisto systemd-fsck[821]: Cannot communicate fsck progress to fsckd: Broken pipe avril 01 22:45:58 callisto systemd-fsck[821]: Cannot communicate fsck progress to fsckd: Broken pipe avril 01 22:45:58 callisto systemd-fsck[821]: Cannot communicate fsck progress to fsckd: Broken pipe avril 01 22:45:58 callisto systemd-fsck[821]: Cannot communicate fsck progress to fsckd: Broken pipe avril 01 22:45:58 callisto systemd-fsck[821]: Cannot communicate fsck progress to fsckd: Broken pipe avril 01 22:45:58 callisto systemd-fsck[821]: /dev/mapper/home : 169002/13148160 fichiers (0.8% non contigus), 36631520/52566272 blocs avril 01 22:45:58 callisto systemd[1]: Started File System Check on /dev/mapper/home. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: systemd 219-4ubuntu10 ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2 Uname: Linux 3.19.0-10-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.16.2-0ubuntu4 Architecture: amd64 CurrentDesktop: Unity Date: Thu Apr 2 01:24:15 2015 InstallationDate: Installed on 2015-04-01 (0 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326) MachineType: Dell Inc. Inspiron 3521 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-10-generic.efi.signed root=UUID=cxxxxx-xxxx-xxxx-xxxxx-xxxxxxxxxxx ro quiet splash SourcePackage: systemd UdevLog: Error: [Errno 2] Aucun fichier ou dossier de ce type: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/25/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A12 dmi.board.name: XXXXXX dmi.board.vendor: Dell Inc. dmi.board.version: A02 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A12 dmi.modalias: dmi:bvnDellInc.:bvrA12:bd10/25/2013:svnDellInc.:pnInspiron3521:pvrA12:rvnDellInc.:rnXXXXX:rvrA02:cvnDellInc.:ct8:cvrA12: dmi.product.name: Inspiron 3521 dmi.product.version: A12 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1439445/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp