[SOLVED] How to fsck+badblocks with systemd?

Butcher · 2012-10-19 11:26:14

Before systemd I could boot into single mode, then "mount / -o remount,ro" and then "fsck.ext4 -c ...". Now I can't since it says / is in use and I can't remount as read-only. What do I do?

Last edited by Butcher (2012-10-22 09:54:22)

89c51 · 2012-10-19 11:52:21

I think that if you boot the kernel with single as a parameter you will get into rescue mode. But better wait for an answer from someone more competent than me.

WorMzy · 2012-10-19 12:11:51

If you want to fsck your /, is there a reason why you're not letting the initramfs do so?

graysky · 2012-10-19 12:44:11

WorMzy wrote:

If you want to fsck your /, is there a reason why you're not letting the initramfs do so?

How would he trigger it?

WorMzy · 2012-10-19 12:49:49

Add fsck to the list of modules in /etc/mkinitcpio.conf, regenerate initramfs. (If necessary) And set pass_no for / to 1 in /etc/fstab. Reboot.

Gusar · 2012-10-19 12:54:44

graysky wrote:

How would he trigger it?

Add fsck.mode=force to the kernel command-line. The initramfs should be built with the fsck hook of course.

89c51 is also correct, adding single to the kernel command-line will make systemd boot into emergency mode. I know that and I don't even use systemd . Adding 1, s, S or emergency will do the same.

Last edited by Gusar (2012-10-19 12:58:59)

brain0 · 2012-10-19 13:06:04

No, this will boot into rescue.target. What you want is emergency.target. So, you want to add systemd.unit=emergency.target to your command line.

If you have fsck in initramfs (which you should), then you can instead add break=premount. This will drop you into the emergency shell and allow to fsck from there.

Gusar · 2012-10-19 13:16:02

brain0 wrote:

No, this will boot into rescue.target. What you want is emergency.target.

Two similar targets? Interesting. I just found Fedora's sysvinit to systemd cheat sheet - adding emergency gets you the emergency target. All the others I mentioned get you the rescue target. Now I'll have to go figure out what the difference between those two targets is

Butcher · 2012-10-19 13:19:42

Thanks for your replies. I already have fsck in my initramfs, but I don't have badblocks there. How do I add it?

brain0 · 2012-10-19 15:21:15

Gusar wrote:

Two similar targets? Interesting. I just found Fedora's sysvinit to systemd cheat sheet - adding emergency gets you the emergency target. All the others I mentioned get you the rescue target. Now I'll have to go figure out what the difference between those two targets is

[Unit]
Description=Emergency Mode
Documentation=man:systemd.special(7)
Requires=emergency.service
After=emergency.service
AllowIsolate=yes

emergency.target only launches emergency.service, which is a root shell (sulogin) on your primary console. No udev, no journald, no nothing.

[Unit]
Description=Rescue Mode
Documentation=man:systemd.special(7)
Requires=sysinit.target rescue.service
After=sysinit.target rescue.service
AllowIsolate=yes

[Install]
Alias=kbrequest.target

This launches sysinit.target, thus udev and journal are running and file systems are mounted. Then it launches rescue.service, which is almost identical to emergency.service.

Last edited by brain0 (2012-10-19 15:21:47)

brain0 · 2012-10-19 15:21:33

Butcher wrote:

Thanks for your replies. I already have fsck in my initramfs, but I don't have badblocks there. How do I add it?

BINARIES="badblocks" in mkinitcpio.conf.

Arch Linux

#1 2012-10-19 11:26:14

[SOLVED] How to fsck+badblocks with systemd?

#2 2012-10-19 11:52:21

Re: [SOLVED] How to fsck+badblocks with systemd?

#3 2012-10-19 12:11:51

Re: [SOLVED] How to fsck+badblocks with systemd?

#4 2012-10-19 12:44:11

Re: [SOLVED] How to fsck+badblocks with systemd?

#5 2012-10-19 12:49:49

Re: [SOLVED] How to fsck+badblocks with systemd?

#6 2012-10-19 12:54:44

Re: [SOLVED] How to fsck+badblocks with systemd?

#7 2012-10-19 13:06:04

Re: [SOLVED] How to fsck+badblocks with systemd?

#8 2012-10-19 13:16:02

Re: [SOLVED] How to fsck+badblocks with systemd?

#9 2012-10-19 13:19:42

Re: [SOLVED] How to fsck+badblocks with systemd?

#10 2012-10-19 15:21:15

Re: [SOLVED] How to fsck+badblocks with systemd?

#11 2012-10-19 15:21:33

Re: [SOLVED] How to fsck+badblocks with systemd?

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