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From: Mark H Weaver <mhw@netris.org>
To: Maxim Cournoyer <maxim.cournoyer@gmail.com>,
	Raghav Gururajan <raghavgururajan@disroot.org>
Cc: 43132-done@debbugs.gnu.org
Subject: bug#43132: [GUIX SYSTEM]: Malfunction
Date: Tue, 15 Sep 2020 18:13:07 -0400	[thread overview]
Message-ID: <871rj2bsdt.fsf@netris.org> (raw)
In-Reply-To: <87tuvzp3nc.fsf@gmail.com>

Maxim Cournoyer <maxim.cournoyer@gmail.com> writes:

> Raghav Gururajan <raghavgururajan@disroot.org> writes:
>
>>> Maxim Cournoyer <maxim.cournoyer@gmail.com> skribis:
>>> 
>>>> I took Raghav to #btrfs last week, where with the help of gentle folks a
>>>> failing drive was established as the most likely culprit.
>>>>
>>>> In other words, Btrfs checksuming capabilities helped quickly
>>>> discovering a hardware problem which might otherwise have silently
>>>> caused non-recoverable damage to Raghav's data.
>>> 
>>> Good, thanks for following up!
>>> 
>>> Ludo’.
>>
>> Thank you!
>>
>> Yeah, seems like my disk is shot, but I am not sure. I have reinstalled
>> guix with ext4, instead of btrfs, as these issues started to arise after
>> migration to btrfs from ext4. So far, my system is doing well. Lets see
>> how it goes. :-)
>
> Sounds like playing with fire to me :-).
>
> Ext4 won't detect bitrot (silent corruption of your drive's data).
> You'll probably wake one day with a fsck that won't be able to recover
> some files, or worst, a completely dead drive.
>
> Your backups would also contain corrupted data (garbage in, garbage
> out!).

For what it's worth, I wholeheartedly agree with Maxim.  Btrfs did you a
great service by calling attention to this problem with your drive, and
it would be a shame to ignore it and switch back to ext4 where your data
may instead be silently corrupted.

I've been using btrfs for several years now on my x86_64 Guix system,
and it has served me well.  Previously, I used ext4, which would
silently leave some of my files empty after crashes.  I've never seen
that happen with btrfs.

       Mark




  reply	other threads:[~2020-09-15 22:15 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-31  9:48 bug#43132: [GUIX SYSTEM]: Malfunction Raghav Gururajan
2020-08-31  9:53 ` Efraim Flashner
2020-08-31 10:01   ` Raghav Gururajan
2020-08-31 10:39 ` Giovanni Biscuolo
2020-08-31 10:48   ` Raghav Gururajan
2020-08-31 11:11     ` Giovanni Biscuolo
2020-08-31 12:07       ` Julien Lepiller
2020-08-31 12:40         ` Giovanni Biscuolo
2020-08-31 21:17 ` Danny Milosavljevic
2020-09-01  3:04   ` Raghav Gururajan
2020-09-01  7:58     ` Danny Milosavljevic
2020-09-10  7:56     ` Ludovic Courtès
2020-09-14 15:14       ` Maxim Cournoyer
2020-09-14 19:34         ` Ludovic Courtès
2020-09-15 11:51           ` Raghav Gururajan
2020-09-15 13:31             ` Maxim Cournoyer
2020-09-15 22:13               ` Mark H Weaver [this message]
2020-09-15 22:38                 ` Raghav Gururajan

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