From: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Song Liu <song@kernel.org>,
linux-raid@vger.kernel.org, linux-block@vger.kernel.org,
linux-fsdevel@vger.kernel.org
Subject: Re: deprecate md bitmap file support
Date: Thu, 15 Jun 2023 10:05:57 +0200 [thread overview]
Message-ID: <20230615100557.00003d8e@linux.intel.com> (raw)
In-Reply-To: <20230615064840.629492-1-hch@lst.de>
On Thu, 15 Jun 2023 08:48:29 +0200
Christoph Hellwig <hch@lst.de> wrote:
> Hi Song,
>
> the md bitmap file support is very problematic in how it bypasses the
> file system for file access. I looked into fixing it in preparation
> for making buffer_head optionals but had to give up because it is so
> convoluted. This series includes the cleanups I've started which seem
> useful even for the internal bitmap support, then makes the bitmap file
> support conditional and adds a deprecation warning.
>
Hi Christoph,
I think that it is worthy to make mdadm aware of that. For example, by requiring
"--force" to make the volume with bitmap file now.
Thanks,
Mariusz
next prev parent reply other threads:[~2023-06-15 8:06 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-15 6:48 deprecate md bitmap file support Christoph Hellwig
2023-06-15 6:48 ` [PATCH 01/11] md-bitmap: set BITMAP_WRITE_ERROR in write_sb_page Christoph Hellwig
2023-06-15 6:56 ` Hannes Reinecke
2023-06-15 14:22 ` Johannes Thumshirn
2023-06-15 17:05 ` Himanshu Madhani
2023-06-15 6:48 ` [PATCH 02/11] md-bitmap: initialize variables at declaration time in md_bitmap_file_unmap Christoph Hellwig
2023-06-15 6:56 ` Hannes Reinecke
2023-06-15 14:23 ` Johannes Thumshirn
2023-06-15 17:05 ` Himanshu Madhani
2023-06-15 6:48 ` [PATCH 03/11] md-bitmap: use %pD to print the file name in md_bitmap_file_kick Christoph Hellwig
2023-06-15 6:58 ` Hannes Reinecke
2023-06-15 14:24 ` Johannes Thumshirn
2023-06-15 18:12 ` Himanshu Madhani
2023-06-15 6:48 ` [PATCH 04/11] md-bitmap: split file writes into a separate helper Christoph Hellwig
2023-06-15 6:59 ` Hannes Reinecke
2023-06-15 14:26 ` Johannes Thumshirn
2023-06-15 18:13 ` Himanshu Madhani
2023-06-15 6:48 ` [PATCH 05/11] md-bitmap: rename read_page to read_file_page Christoph Hellwig
2023-06-15 6:59 ` Hannes Reinecke
2023-06-15 14:38 ` Johannes Thumshirn
2023-06-15 18:14 ` Himanshu Madhani
2023-06-15 6:48 ` [PATCH 06/11] md-bitmap: refactor md_bitmap_init_from_disk Christoph Hellwig
2023-06-15 21:59 ` kernel test robot
2023-06-16 6:53 ` Song Liu
2023-06-16 7:01 ` Christoph Hellwig
2023-06-15 6:48 ` [PATCH 07/11] md-bitmap: cleanup read_sb_page Christoph Hellwig
2023-06-15 8:24 ` Hannes Reinecke
2023-06-15 14:42 ` Johannes Thumshirn
2023-06-15 18:30 ` Himanshu Madhani
2023-06-15 6:48 ` [PATCH 08/11] md-bitmap: account for mddev->bitmap_info.offset in read_sb_page Christoph Hellwig
2023-06-15 8:25 ` Hannes Reinecke
2023-06-15 18:38 ` Himanshu Madhani
2023-06-15 6:48 ` [PATCH 09/11] md-bitmap: don't use ->index for pages backing the bitmap file Christoph Hellwig
2023-06-15 8:37 ` Hannes Reinecke
2023-06-15 6:48 ` [PATCH 10/11] md: make bitmap file support optional Christoph Hellwig
2023-06-15 8:37 ` Hannes Reinecke
2023-06-15 19:37 ` Himanshu Madhani
2023-06-15 6:48 ` [PATCH 11/11] md: deprecate bitmap file support Christoph Hellwig
2023-06-15 8:38 ` Hannes Reinecke
2023-06-15 19:37 ` Himanshu Madhani
2023-06-15 19:37 ` Himanshu Madhani
2023-06-15 8:05 ` Mariusz Tkaczyk [this message]
2023-06-16 7:01 ` deprecate md " Christoph Hellwig
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