Re: resend: [PATCH v2 mdadm] super1.c: avoid useless sync when bitmap switches from clustered to none

["heming.zhao@suse.com" <heming.zhao@suse.com>]

On 3/2/21 4:35 PM, heming.zhao@suse.com wrote:
> With kernel commit 480523feae58 ("md: only call set_in_sync() when it
> is expected to succeed."), mddev->in_sync in clustered array is always
> zero. It makes metadata resync_offset to always zero.
> When assembling a clusterd array with "-U no-bitmap" option, kernel
> md layer "mddev->resync_offset == 0" and "mddev->bitmap == NULL" will
> trigger raid1 do sync on every bitmap chunk. the sync action is useless,
> ... ...
> ---
> v2: only set MaxSector on bitmap clean device
> 
> ---
>   super1.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/super1.c b/super1.c


Hello all,

more info:
This patch had been verified & run in SUSE customer env for some time.

Thanks,
Heming