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

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

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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