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From: "Komu Kadze" <komukadze@wp.pl>
To: linux-btrfs@vger.kernel.org
Subject: Recovering from disk failure (RAID5)
Date: Tue, 18 Oct 2016 01:43:20 +0200	[thread overview]
Message-ID: <5805621878adb6.84965706@wp.pl> (raw)

Hi,

I have a BTRFS setup with 8 HDD stripped with RAID5. I know it&#x2019;s mark as experimental, as it has problem with power failures. I decided to give it a shot. Last night one of the disks in the array failed, the OS decided to remount the FS into read-only mode. The data was still accessible. I started backing things up, but few hours later I started getting I/O errors.

Currently I&#x2019;m stuck at this: http://pastebin.com/n9cGVqJB

With  dmesg giving me this: http://pastebin.com/F5626BAc while trying to mount the FS (even with &#x2013;o degraded)

Kernel version: 4.4.0-42-generic
Btrfs progs version: v4.7.2
Btrfs fi show: http://pastebin.com/X7Hpw2tb
btrfs fi df: currently the file system is not mountable

--
Komu




                 reply	other threads:[~2016-10-17 23:50 UTC|newest]

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