Arch Linux

Mifune

Member

Registered: 2019-07-02

Posts: 25

Can't arch-chroot to recover after failed upgrade [SOLVED]

Hi,

First of all, writing on a smartphone so I beg a little patience...

So my latest upgrade led to a kernel panic (I have a sneaking suspicion it was systems that did it) and I tried booting from the live usb, which I just created for the purpose. After mounting the root device on /mnt, when I go arch-chroot /mnt I get the following message:
/bin/bash: symbol lookup error: /usr/lib/libc.so.6: undefined symbol _rgs, version GLIBC_2.2.5

And I can't chroot... I have some experience dealing with broken upgrades but not being able to chroot is a new one for me...

Thanks in advance for any help...

Last edited by Mifune (2019-07-02 14:35:10)

Mifune

Member

Registered: 2019-07-02

Posts: 25

Re: Can't arch-chroot to recover after failed upgrade [SOLVED]

Suspicion it was *systemd* that did it! Damned autocorrect!

nl6720

The Evil Wiki Admin

Registered: 2016-07-02

Posts: 718

Re: Can't arch-chroot to recover after failed upgrade [SOLVED]

https://wiki.archlinux.org/index.php/Pa … _rebooting :

If you cannot enter the arch-chroot or chroot environment but need to re-install packages you can use the command pacman --sysroot /mnt -Syu foo bar to use pacman on your root partition.

If --sysroot doesn't work, try --root instead.

Mifune

Member

Registered: 2019-07-02

Posts: 25

Re: Can't arch-chroot to recover after failed upgrade [SOLVED]

Thanks for that! It seems that I'm not able to get an ethernet connexion either... I'm going to go shoot myself now...

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,715

Re: Can't arch-chroot to recover after failed upgrade [SOLVED]

Thanks for that! It seems that I'm not able to get an ethernet connexion either...

Wired or wireless?

Edit: Also, you don't need an internet connection if you want to downgrade or remove a package. (Unless you cleared your cache)

Last edited by ewaller (2019-07-02 13:58:21)

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Mifune

Member

Registered: 2019-07-02

Posts: 25

Re: Can't arch-chroot to recover after failed upgrade [SOLVED]

Hi,

So I solved the ethernet problem (DHCP).

How do I downgrade to my previous system configuration? I didn't clear the cache.
Thanks

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,423

Re: Can't arch-chroot to recover after failed upgrade [SOLVED]

Check your pacman.log on what was updated, however that specific error you got from chrooting makes me more inclined that you  are partial updating and should rather run a proper complete system update than downgrading stuff. (Or worse installed something as root that replaced core libraries with older broken versions...)

Last edited by V1del (2019-07-02 14:21:01)

Mifune

Member

Registered: 2019-07-02

Posts: 25

Re: Can't arch-chroot to recover after failed upgrade [SOLVED]

Hi,

Solved it!

I try to never partial update but maybe that happened... I reinstalled glibc using the pacman --root ... above and everything started working! Full system upgrade and I'm up and running. This is why Linux rocks!
Thank you all for your help!

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,423

Re: Can't arch-chroot to recover after failed upgrade [SOLVED]

glad to hear, please mark as [SOLVED] by editing the title in your first post.

Mifune

Member

Registered: 2019-07-02

Posts: 25

Re: Can't arch-chroot to recover after failed upgrade [SOLVED]

Forgot about that! Done now, thanks again