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Continue boot with offline fstab disk (linux/systemd)



The 2019 Stack Overflow Developer Survey Results Are Inhow can I boot linux from a software raid 1 arrayCan't boot my server after fstab optimizationsSystemd dependencies and boot orderHow to debug why systemd is idling and is not going on with the boot process?Faulty /etc/fstab preventing Proxmox bootUbuntu - Folder replaced by lost+found/ on raid1 disksLinux: “fstab” with additional mount options?fstab “x-systemd.requires” option with no effectIncrease disk detection timeout at boot with Linux/SystemdUbuntu won't mount through fstab after upgrade to Systemd



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2















During boot, with pre-systemd versions of Ubuntu server (eg. 14.04), if a non-critical fstab disk was offline, the system would wait to mount the disk (30s iirc), timeout and continue booting.



Since upgrading through 16.04 to Ubuntu 18.04, thanks to systemd's dependencies I presume, a missing fstab disk stops the boot process resulting in the "Emergency mode... Press Enter for Maintenance" prompt at boot time.



  1. Is there a way to change this behaviour by default? Ie. simply continue booting or an option to flag disks as non-critical?

  2. Failing that, is there a straightforward systemctl command to 'continue booting ignoring missing disk' from maintenance?









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    2















    During boot, with pre-systemd versions of Ubuntu server (eg. 14.04), if a non-critical fstab disk was offline, the system would wait to mount the disk (30s iirc), timeout and continue booting.



    Since upgrading through 16.04 to Ubuntu 18.04, thanks to systemd's dependencies I presume, a missing fstab disk stops the boot process resulting in the "Emergency mode... Press Enter for Maintenance" prompt at boot time.



    1. Is there a way to change this behaviour by default? Ie. simply continue booting or an option to flag disks as non-critical?

    2. Failing that, is there a straightforward systemctl command to 'continue booting ignoring missing disk' from maintenance?









    share|improve this question









    New contributor




    sebt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      2












      2








      2








      During boot, with pre-systemd versions of Ubuntu server (eg. 14.04), if a non-critical fstab disk was offline, the system would wait to mount the disk (30s iirc), timeout and continue booting.



      Since upgrading through 16.04 to Ubuntu 18.04, thanks to systemd's dependencies I presume, a missing fstab disk stops the boot process resulting in the "Emergency mode... Press Enter for Maintenance" prompt at boot time.



      1. Is there a way to change this behaviour by default? Ie. simply continue booting or an option to flag disks as non-critical?

      2. Failing that, is there a straightforward systemctl command to 'continue booting ignoring missing disk' from maintenance?









      share|improve this question









      New contributor




      sebt is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      During boot, with pre-systemd versions of Ubuntu server (eg. 14.04), if a non-critical fstab disk was offline, the system would wait to mount the disk (30s iirc), timeout and continue booting.



      Since upgrading through 16.04 to Ubuntu 18.04, thanks to systemd's dependencies I presume, a missing fstab disk stops the boot process resulting in the "Emergency mode... Press Enter for Maintenance" prompt at boot time.



      1. Is there a way to change this behaviour by default? Ie. simply continue booting or an option to flag disks as non-critical?

      2. Failing that, is there a straightforward systemctl command to 'continue booting ignoring missing disk' from maintenance?






      linux ubuntu boot systemd fstab






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      share|improve this question









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      edited 13 hours ago







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          In the /etc/fstab entries for your mounts you can add systemd specific options, including the nofail option will instruct systemd that the boot can continue without waiting for the mount unit and regardless whether the mount point can be mounted successfully.



          You can add the options x-systemd.device-timeout and or x-systemd.mount-timeout to customize time-outs.






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            In the /etc/fstab entries for your mounts you can add systemd specific options, including the nofail option will instruct systemd that the boot can continue without waiting for the mount unit and regardless whether the mount point can be mounted successfully.



            You can add the options x-systemd.device-timeout and or x-systemd.mount-timeout to customize time-outs.






            share|improve this answer



























              4














              In the /etc/fstab entries for your mounts you can add systemd specific options, including the nofail option will instruct systemd that the boot can continue without waiting for the mount unit and regardless whether the mount point can be mounted successfully.



              You can add the options x-systemd.device-timeout and or x-systemd.mount-timeout to customize time-outs.






              share|improve this answer

























                4












                4








                4







                In the /etc/fstab entries for your mounts you can add systemd specific options, including the nofail option will instruct systemd that the boot can continue without waiting for the mount unit and regardless whether the mount point can be mounted successfully.



                You can add the options x-systemd.device-timeout and or x-systemd.mount-timeout to customize time-outs.






                share|improve this answer













                In the /etc/fstab entries for your mounts you can add systemd specific options, including the nofail option will instruct systemd that the boot can continue without waiting for the mount unit and regardless whether the mount point can be mounted successfully.



                You can add the options x-systemd.device-timeout and or x-systemd.mount-timeout to customize time-outs.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 12 hours ago









                HBruijnHBruijn

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