From: "Sven Köhler" <sven.koehler@gmail.com>
To: linux-raid@vger.kernel.org
Subject: Re: regression: drive was detected as raid member due to metadata on partition
Date: Fri, 19 Apr 2024 00:07:14 +0200 [thread overview]
Message-ID: <uvs5j5$2ri$1@ciao.gmane.io> (raw)
In-Reply-To: <cffea7de-edf4-c97b-3fc7-c87038123593@huaweicloud.com>
Am 18.04.24 um 09:31 schrieb Li Nan:
>
>
> 在 2024/4/14 5:37, Sven Köhler 写道:
>
> [...]
>
>> The Arch kernel has RAID autodetection enabled. I just tried to
>> reproduce it. While mdadm will not consider /dev/sd[ab] as members,
>> the kernel's autodetection will. For that you have to reboot.
>>
>
> It is not about autodetection. Autodetection only deals with the devices in
> list 'all_detected_devices', device is added to it by blk_add_partition().
> So sdx will not be added to this list, and will not be autodetect.
I apologize. It's not the kernel autodetection. Arch Linux is using udev
rules to re-assemble mdadm array during boot. The udev rules execute
/usr/bin/mdadm -If $name
where $name is likely a device like /dev/sda. I'm not sure yet whether
the udev rules have changed or mdadm has changed.
I will continue digging.
next prev parent reply other threads:[~2024-04-18 22:12 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-08 23:31 regression: drive was detected as raid member due to metadata on partition Sven Köhler
2024-04-10 1:56 ` Li Nan
2024-04-10 20:59 ` Sven Köhler
2024-04-11 2:25 ` Li Nan
2024-04-13 21:37 ` Sven Köhler
2024-04-18 7:31 ` Li Nan
2024-04-18 22:07 ` Sven Köhler [this message]
2024-04-18 22:11 ` Sven Köhler
2024-05-07 7:32 ` Mariusz Tkaczyk
2024-05-28 22:57 ` Sven Köhler
2024-06-12 14:36 ` Mariusz Tkaczyk
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