All of lore.kernel.org
 help / color / mirror / Atom feed
From: Nicolas Martin <nicolas.martin.3d@gmail.com>
To: linux-raid@vger.kernel.org
Subject: RAID5 now recognized as RAID1
Date: Thu, 8 Jul 2021 12:07:37 +0200	[thread overview]
Message-ID: <C3C9F935-DD1C-409C-8C9D-56F97B13B676@gmail.com> (raw)

Hi,

For a bit of context :I had a RAID5 with 4 disks running on a QNAP NAS.
One disk started failing, so I ordered a replacement disk, but in the mean time the NAS became irresponsive and I had to reboot it.
Now the NAS does not (really) come back alive, and I can only log onto it with ssh.

When I run cat /proc/mdstatus, this is what I get :
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md322 : active raid1 sdd5[3](S) sdc5[2](S) sdb5[1] sda5[0]
      7235136 blocks super 1.0 [2/2] [UU]
      bitmap: 0/1 pages [0KB], 65536KB chunk

md256 : active raid1 sdd2[3](S) sdc2[2](S) sdb2[1] sda2[0]
      530112 blocks super 1.0 [2/2] [UU]
      bitmap: 0/1 pages [0KB], 65536KB chunk

md13 : active raid1 sdc4[24] sda4[1] sdb4[0] sdd4[25]
      458880 blocks super 1.0 [24/4] [UUUU____________________]
      bitmap: 1/1 pages [4KB], 65536KB chunk

md9 : active raid1 sdb1[0] sdd1[25] sdc1[24] sda1[26]
      530048 blocks super 1.0 [24/4] [UUUU____________________]
      bitmap: 1/1 pages [4KB], 65536KB chunk

unused devices: <none>

So, I don’t know how this could happen ? I looked up on the FAQ, but I can’t seem to see what could explain this, nor how I can recover from this ?

Any help appreciated.

Thanks

             reply	other threads:[~2021-07-08 10:07 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-08 10:07 Nicolas Martin [this message]
2021-07-12  7:08 ` RAID5 now recognized as RAID1 Fine Fan
2021-07-12  7:52 ` Wols Lists
2021-07-15  4:59   ` Fine Fan

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=C3C9F935-DD1C-409C-8C9D-56F97B13B676@gmail.com \
    --to=nicolas.martin.3d@gmail.com \
    --cc=linux-raid@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.