From: Roman Mamedov <rm@romanrm.net>
To: CoolCold <coolthecold@gmail.com>
Cc: Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: raid10, far layout initial sync slow + XFS question
Date: Sat, 2 Sep 2023 01:37:00 +0500 [thread overview]
Message-ID: <20230902013700.4c969472@nvm> (raw)
In-Reply-To: <CAGqmV7qBPeW0Ua1xgiU+p9aDwWMTvc-28iC8kuTzc654wrnmgQ@mail.gmail.com>
Hello,
On Sat, 2 Sep 2023 03:23:00 +0700
CoolCold <coolthecold@gmail.com> wrote:
> So the strange thing I do observe, is its initial raid sync speed.
> Created with:
> mdadm --create /dev/md3 --run -b none --level=10 --layout=f2
> --chunk=16 --raid-devices=4 /dev/nvme0n1 /dev/nvme4n1 /dev/nvme3n1
> /dev/nvme5n1
>
> sync speed:
>
> md3 : active raid10 nvme5n1[3] nvme3n1[2] nvme4n1[1] nvme0n1[0]
> 7501212288 blocks super 1.2 16K chunks 2 far-copies [4/4] [UUUU]
> [=>...................] resync = 6.2% (466905632/7501212288)
> finish=207.7min speed=564418K/sec
Any difference if you use e.g. --chunk=1024?
How about a newer kernel (such as 6.1)?
--
With respect,
Roman
next prev parent reply other threads:[~2023-09-01 20:37 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-01 20:23 raid10, far layout initial sync slow + XFS question CoolCold
2023-09-01 20:37 ` Roman Mamedov [this message]
2023-09-01 20:43 ` CoolCold
2023-09-01 21:00 ` Roman Mamedov
2023-09-01 21:17 ` CoolCold
2023-09-01 21:26 ` Roman Mamedov
2023-09-01 20:58 ` CoolCold
2023-09-02 3:56 ` Yu Kuai
2023-09-02 6:07 ` CoolCold
2023-09-02 6:13 ` Yu Kuai
2023-09-02 6:39 ` CoolCold
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