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From: Wols Lists <antlists@youngman.org.uk>
To: Jinpu Wang <jinpuwang@gmail.com>,
	William Morgan <therealbrewer@gmail.com>
Cc: linux-raid <linux-raid@vger.kernel.org>
Subject: Re: Need help with degraded raid 5
Date: Thu, 5 Mar 2020 17:22:20 +0000	[thread overview]
Message-ID: <5E61354C.2090901@youngman.org.uk> (raw)
In-Reply-To: <CAD9gYJ+3gP+6aannsjzq=L0DsQ-dC2wj4SJfU3+n-t3pG0q3pg@mail.gmail.com>

On 05/03/20 14:53, Jinpu Wang wrote:
> "mdadm /dev/md0 -a /dev/sdl1"  should work for you to add the disk
> back to array, maybe you can check first with "mdadm -E /dev/sdl1" to
> make sure.

Or better, --re-add or whatever the option is. If it can find the
relevant data in the superblock, like bitmap or journal or whatever, it
will just bring the disk up-to-date. If it can't, it functions just like
add, so you've lost nothing but might gain a lot.

Cheers,
Wol

  reply	other threads:[~2020-03-05 17:22 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-05  0:31 Need help with degraded raid 5 William Morgan
2020-03-05 14:53 ` Jinpu Wang
2020-03-05 17:22   ` Wols Lists [this message]
2020-03-06 21:33     ` William Morgan
2020-03-06 22:55       ` David C. Rankin
2020-03-09  8:39       ` Jack Wang

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