From: "Niccolò Belli" <darkbasic@linuxsystems.it>
To: Qu Wenruo <quwenruo@cn.fujitsu.com>
Cc: "Niccolò Belli" <darkbasic@linuxsystems.it>, linux-btrfs@vger.kernel.org
Subject: Re: Uncorrectable errors after rebooting with Magic Sysrq Keys
Date: Fri, 15 Apr 2016 17:42:21 +0200 [thread overview]
Message-ID: <30940bf0-924b-4ad7-a3d8-24b980ba46f4@linuxsystems.it> (raw)
In-Reply-To: <5710B4B8.9020002@cn.fujitsu.com>
Hi,
Is it 100% safe to run a btrfs check without --repair?
Because otherwise I will have to wait for my new external drive to arrive
and make a backup first.
Thanks,
Niccolò
On venerdì 15 aprile 2016 11:30:32 CEST, Qu Wenruo wrote:
> Would you please run "btrfs check --readonly <your dm0>" and
> paste the output?
>
> The dmesg seems very impossible:
>
>> BTRFS error (device dm-0): bad tree block start 245497856 245498111
>
> The later one is not even aligned to 2.
>
> But you system still seems mountable as you succeeded in
> running btrfs scrub.
>
> So I assume either the tree block is not a critical one or the
> copy saved you.
>
> Thanks,
> Qu
next prev parent reply other threads:[~2016-04-15 15:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-15 8:21 Uncorrectable errors after rebooting with Magic Sysrq Keys Niccolò Belli
2016-04-15 9:30 ` Qu Wenruo
2016-04-15 15:42 ` Niccolò Belli [this message]
2016-04-15 15:45 ` Hugo Mills
2016-04-15 17:28 ` Niccolò Belli
2016-04-15 16:58 ` Roman Mamedov
2016-04-16 10:25 ` Niccolò Belli
2016-04-30 13:11 ` Niccolò Belli
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