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From: Shaohua Li <shli@kernel.org>
To: Tomasz Chmielewski <mangoo@wpkg.org>
Cc: linux-raid@vger.kernel.org, songliubraving@fb.com,
	jes.sorensen@gmail.com
Subject: Re: raid5 - adding journal to an existing device?
Date: Thu, 2 Mar 2017 10:39:25 -0800	[thread overview]
Message-ID: <20170302183925.xnvvybpui6ldssv6@kernel.org> (raw)
In-Reply-To: <9447cf1f98aaade8ab5cd3f0ef724f79@admin.virtall.com>

On Sat, Feb 25, 2017 at 11:12:21PM +0900, Tomasz Chmielewski wrote:
> mdadm manual specifies the following for create, build and grow modes:
> 
>        --write-journal
>               Specify journal device for the RAID-4/5/6 array.
> 
> However:
> 
> # mdadm --grow /dev/md2 --write-journal /dev/sdc1
> mdadm: :option --write-journal not valid in grow mode
> 
> 
> Is it not yet supported, will never be supported, or am I simply trying to
> use it in a  wrong way?
> 
> 
> 
> Tried the following versions:
> 
> # ./mdadm -V
> mdadm - v3.4-115-ge22fe3a - 29th November 2016
> 
> # mdadm -V
> mdadm - v3.4 - 28th January 2016

Cc: Song and Jes.

I think we support hotadd journal. Will let Song clarify.

Thanks,
Shaohua

  reply	other threads:[~2017-03-02 18:39 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-25 14:12 raid5 - adding journal to an existing device? Tomasz Chmielewski
2017-03-02 18:39 ` Shaohua Li [this message]
2017-03-02 19:19   ` Song Liu

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