GNU bug report logs - #22588
root: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: ludo <at> gnu.org (Ludovic Courtès)
Cc: tracker <at> debbugs.gnu.org
Subject: bug#22588: closed (root: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY)
Date: Mon, 08 Feb 2016 22:50:02 +0000

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Your message dated Mon, 08 Feb 2016 23:49:06 +0100
with message-id <87mvrau8bh.fsf <at> gnu.org>
and subject line Re: bug#22588: root: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY
has caused the debbugs.gnu.org bug report #22588,
regarding root: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY
to be marked as done.

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22588: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=22588
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From: Mark H Weaver <mhw <at> netris.org>
To: bug-guix <at> gnu.org
Subject: root: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY
Date: Sun, 07 Feb 2016 16:21:35 -0500

I've been bitten by this once before, and a user on #guix did as well.
When there are problems in the root filesystem that fsck doesn't want to
fix automatically, the user is dumped into a guile prompt where PATH is
not set, and it's very inconvenient to run fsck manually.

This is what I just suggested that the user type, with apologies:

  (use-modules (ice-9 ftw) (srfi srfi-26))
  (define dirs (scandir "/gnu/store" (cut string-suffix? "e2fsprogs-1.42.13" <>)))
  (define e2fsck (string-append "/gnu/store/" (car dirs) "/sbin/e2fsck"))
  (system* e2fsck "/dev/XXX")

Is there a better way?

Speaking from personal experience, it's very painful to do anything
non-trivial in that REPL.  Even just adding readline would help a lot.

Maybe we should at least set PATH to include the available /bin and
/sbin directories before entering the REPL.

We should probably also handle errors from fsck specially.

    Thoughts?
       Mark

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From: ludo <at> gnu.org (Ludovic Courtès)
To: Mark H Weaver <mhw <at> netris.org>
Cc: 22588-done <at> debbugs.gnu.org
Subject: Re: bug#22588: root: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY
Date: Mon, 08 Feb 2016 23:49:06 +0100

Mark H Weaver <mhw <at> netris.org> skribis:

> Okay, I must admit that's a pretty great little hack, and a nice demo of
> how easy it is to hack something together like this in Guile.

It’s fun to think we have a compiler from a subset of Bourne shell to
the Guile VM.  :-)

> Let's do it :)

Done in 6eb4390!

Thanks,
Ludo’.

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