[SOLVED] Arch hangs at boot: Emergency Shell

kumasan · 2021-05-20 09:10:05

Hello, recently with one of the new home server I'm having some issue at boot. This only happens time to time after a reboot.

May 19 21:11:00 gorille kernel: kauditd_printk_skb: 12 callbacks suppressed
May 19 21:11:00 gorille kernel: audit: type=1130 audit(1621451460.847:23): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-networkd-wait-online comm="systemd" exe="/usr/lib/systemd/systemd>
May 19 21:12:25 gorille systemd[1]: dev-disk-by\x2duuid-adc512e2\x2da22c\x2d4157\x2d9e70\x2dde3aec936ab2.device: Job dev-disk-by\x2duuid-adc512e2\x2da22c\x2d4157\x2d9e70\x2dde3aec936ab2.device/start ti>
May 19 21:12:25 gorille systemd[1]: Timed out waiting for device /dev/disk/by-uuid/adc512e2-a22c-4157-9e70-de3aec936ab2.
May 19 21:12:25 gorille systemd[1]: Dependency failed for /mnt/storage.
May 19 21:12:25 gorille systemd[1]: Dependency failed for Local File Systems.
May 19 21:12:25 gorille systemd[1]: local-fs.target: Job local-fs.target/start failed with result 'dependency'.
May 19 21:12:25 gorille systemd[1]: local-fs.target: Triggering OnFailure= dependencies.
May 19 21:12:25 gorille systemd[1]: mnt-storage.mount: Job mnt-storage.mount/start failed with result 'dependency'.
May 19 21:12:25 gorille systemd[1]: dev-disk-by\x2duuid-adc512e2\x2da22c\x2d4157\x2d9e70\x2dde3aec936ab2.device: Job dev-disk-by\x2duuid-adc512e2\x2da22c\x2d4157\x2d9e70\x2dde3aec936ab2.device/start fa>
May 19 21:12:25 gorille systemd[1]: systemd-ask-password-console.path: Deactivated successfully.
May 19 21:12:25 gorille systemd[1]: Stopped Dispatch Password Requests to Console Directory Watch.
May 19 21:12:25 gorille systemd[1]: systemd-ask-password-wall.path: Deactivated successfully.
May 19 21:12:25 gorille systemd[1]: Stopped Forward Password Requests to Wall Directory Watch.
May 19 21:12:25 gorille systemd[1]: Reached target Timers.
May 19 21:12:25 gorille systemd[1]: Reached target Login Prompts.
May 19 21:12:25 gorille systemd[1]: Condition check resulted in Store a System Token in an EFI Variable being skipped.
May 19 21:12:25 gorille systemd[1]: Condition check resulted in Commit a transient machine-id on disk being skipped.
May 19 21:12:25 gorille systemd[1]: Reached target Sockets.
May 19 21:12:25 gorille systemd[1]: Started Emergency Shell.

It looks like the system experience a timeout while trying to mount /mnt/storage as defined in /etc/fstab:

# Static information about the filesystems.
# See fstab(5) for details.

# <file system> <dir> <type> <options> <dump> <pass>
# /dev/sda3
UUID=cbae49cc-f4a3-484a-ada4-93f155b41852       /               ext4            rw,relatime     0 1

# /dev/sda1
UUID=690D-3EE3          /boot           vfat            rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro   0 2

# /dev/md126p1
UUID=adc512e2-a22c-4157-9e70-de3aec936ab2       /mnt/storage    ext4            rw,relatime     0 3

# /dev/sda2
UUID=260dc0f1-3f00-4230-b39d-2b35fc9d9079       none            swap            defaults        0 0

I can't figure out where is this Timeout coming from ?
I don't want to comment the related line in /etc/fstab and mount it manually after start. Can anyone help ?

Thanks for your help

Last edited by kumasan (2021-05-20 14:25:26)

V1del · 2021-05-20 09:59:20

More previous context? as this seems to not be a normal partition but something setup as a mapper device/potentially encrypted I'd say chances are you run into early boot entropy issues (... though they should mostly be a thing of the past): https://wiki.archlinux.org/title/Random … ternatives

Other than that if the device is just slow and does eventually show up you could also just set up a systemd automount: https://wiki.archlinux.org/title/Fstab# … th_systemd

Also please use [ code ] instead of [ quote ] when posting outputs.

Last edited by V1del (2021-05-20 10:00:28)

kumasan · 2021-05-20 10:04:06

V1del wrote:

More previous context? as this seems to not be a normal partition but something setup as a mapper device/potentially encrypted I'd say chances are you run into early boot entropy issues (... though they should mostly be a thing of the past): https://wiki.archlinux.org/title/Random … ternatives

I forgot to mention that the volume behind /mnt/storage is a fake raid (provided by the intel chipset of the motherboard). Nothing encrypted or lack of entropy related

V1del wrote:

Other than that if the device is just slow and does eventually show up you could also just set up a systemd automount: https://wiki.archlinux.org/title/Fstab# … th_systemd

I'll take a look at it thanks.

V1del wrote:

Also please use [ code ] instead of [ quote ] when posting outputs.

Corrected.

Lone_Wolf · 2021-05-20 10:49:21

kumasan wrote:

I forgot to mention that the volume behind /mnt/storage is a fake raid (provided by the intel chipset of the motherboard)

assuming you do use mdadm , have you added mdadm_udev to mkinitcpio hooks and mdmon to binaries ?
See https://wiki.archlinux.org/title/RAID#C … mkinitcpio for more details

Last edited by Lone_Wolf (2021-05-20 10:49:45)

kumasan · 2021-05-20 11:43:28

Thanks a lot for your help.

The issue seems to have been solved.

I've followed the fix by let systemd munt the device

# /dev/md126p1
UUID=adc512e2-a22c-4157-9e70-de3aec936ab2       /mnt/storage    ext4            noauto,x-systemd.automount      0 3

After several reboot, this works fine.

2ManyDogs · 2021-05-20 12:20:48

Please remember to mark your thread [SOLVED] (edit the title of your first post).

Arch Linux

#1 2021-05-20 09:10:05

[SOLVED] Arch hangs at boot: Emergency Shell

#2 2021-05-20 09:59:20

Re: [SOLVED] Arch hangs at boot: Emergency Shell

#3 2021-05-20 10:04:06

Re: [SOLVED] Arch hangs at boot: Emergency Shell

#4 2021-05-20 10:49:21

Re: [SOLVED] Arch hangs at boot: Emergency Shell

#5 2021-05-20 11:43:28

Re: [SOLVED] Arch hangs at boot: Emergency Shell

#6 2021-05-20 12:20:48

Re: [SOLVED] Arch hangs at boot: Emergency Shell

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