linux-kernel - Re: [bisected] RAID1 direct IO redirecting sector loop since 6.0

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Message-ID: <20221102010826.12dcb4bb@xps.demsh.org>
Date:   Wed, 2 Nov 2022 01:08:26 +0300
From:   Dmitrii Tcvetkov <me@...sh.org>
To:     Keith Busch <kbusch@...nel.org>
Cc:     Jens Axboe <axboe@...nel.dk>, Song Liu <song@...nel.org>,
        linux-raid@...r.kernel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [bisected] RAID1 direct IO redirecting sector loop since 6.0

On Tue, 1 Nov 2022 15:18:20 -0600
Keith Busch <kbusch@...nel.org> wrote:
> Oh shoot, sorry about that! Should have been this:
> 
> @@ -703,6 +702,7 @@ void disk_stack_limits(struct gendisk *disk,
> struct block_device *bdev, pr_notice("%s: Warning: Device %pg is
> misaligned\n", disk->disk_name, bdev);
> 
> +       blk_queue_dma_alignment(t, queue_logical_block_size(t) - 1);
>         disk_update_readahead(disk);
>  }
>  EXPORT_SYMBOL(disk_stack_limits);

This didn't change behaviour, second guest still hangs.