Re: [PATCH mdadm v3 1/2] tests/00readonly: Run udevadm settle before setting ro

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On 7/27/22 17:52, Logan Gunthorpe wrote:
> In some recent kernel versions, 00readonly fails with:
> 
>   mdadm: failed to set readonly for /dev/md0: Device or resource busy
>   ERROR: array is not read-only!
> 
> This was traced down to a race condition with udev holding a reference
> to the block device at the same time as trying to set it read only.
> 
> To fix this, call udevadm settle before setting the array read only.
> 
> Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
> ---
>  tests/00readonly | 1 +
>  1 file changed, 1 insertion(+)

Applied,

Thanks,
Jes




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