From: Christoph Hellwig <hch@lst.de>
To: Theodore Ts'o <tytso@mit.edu>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
Al Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>,
"Darrick J. Wong" <djwong@kernel.org>, Jan Kara <jack@suse.cz>,
linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-xfs@vger.kernel.org
Subject: Re: introduce bdev holder ops and a file system shutdown method v2
Date: Fri, 19 May 2023 06:11:36 +0200 [thread overview]
Message-ID: <20230519041136.GA10931@lst.de> (raw)
In-Reply-To: <ZGbYLK0lOqYqPf9O@mit.edu>
On Thu, May 18, 2023 at 10:00:12PM -0400, Theodore Ts'o wrote:
> On Thu, May 18, 2023 at 06:23:09AM +0200, Christoph Hellwig wrote:
> > Hi all,
> >
> > this series fixes the long standing problem that we never had a good way
> > to communicate block device events to the user of the block device.
> >
> > It fixes this by introducing a new set of holder ops registered at
> > blkdev_get_by_* time for the exclusive holder, and then wire that up
> > to a shutdown super operation to report the block device remove to the
> > file systems.
>
> Thanks for working on this! Is there going to be an fstest which
> simulates a device removal while we're running fsstress or some such,
> so we can exercise full device removal path?
So the problem with xfstests is that there isn't really any generic
way to remove a block device, and even less so to put it back.
xfstests has some scsi_debug based tests, maybe I can cook something up
for that. My testing has been with nvme, so another option would be
to add nvme-loop support to xfstests and use that. I'll see what I can
do.
next prev parent reply other threads:[~2023-05-19 4:11 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-18 4:23 introduce bdev holder ops and a file system shutdown method v2 Christoph Hellwig
2023-05-18 4:23 ` [PATCH 01/13] block: factor out a bd_end_claim helper from blkdev_put Christoph Hellwig
2023-05-18 4:23 ` [PATCH 02/13] block: refactor bd_may_claim Christoph Hellwig
2023-05-30 11:41 ` Jan Kara
2023-06-01 8:11 ` Christoph Hellwig
2023-06-01 9:58 ` Jan Kara
2023-05-18 4:23 ` [PATCH 03/13] block: turn bdev_lock into a mutex Christoph Hellwig
2023-05-18 4:23 ` [PATCH 04/13] block: consolidate the shutdown logic in blk_mark_disk_dead and del_gendisk Christoph Hellwig
2023-05-30 11:58 ` Jan Kara
2023-05-18 4:23 ` [PATCH 05/13] block: avoid repeated work in blk_mark_disk_dead Christoph Hellwig
2023-05-18 4:23 ` [PATCH 06/13] block: unhash the inode earlier in delete_partition Christoph Hellwig
2023-05-30 12:09 ` Jan Kara
2023-05-18 4:23 ` [PATCH 07/13] block: delete partitions later in del_gendisk Christoph Hellwig
2023-05-30 12:55 ` Jan Kara
2023-05-18 4:23 ` [PATCH 08/13] block: remove blk_drop_partitions Christoph Hellwig
2023-05-30 12:56 ` Jan Kara
2023-05-18 4:23 ` [PATCH 09/13] block: introduce holder ops Christoph Hellwig
2023-05-30 13:03 ` Jan Kara
2023-05-18 4:23 ` [PATCH 10/13] block: add a mark_dead holder operation Christoph Hellwig
2023-05-30 13:05 ` Jan Kara
2023-05-18 4:23 ` [PATCH 11/13] fs: add a method to shut down the file system Christoph Hellwig
2023-05-18 4:23 ` [PATCH 12/13] xfs: wire up sops->shutdown Christoph Hellwig
2023-05-18 5:03 ` Darrick J. Wong
2023-05-18 4:23 ` [PATCH 13/13] xfs: wire up the ->mark_dead holder operation for log and RT devices Christoph Hellwig
2023-05-18 5:40 ` Dave Chinner
2023-05-19 2:00 ` introduce bdev holder ops and a file system shutdown method v2 Theodore Ts'o
2023-05-19 4:11 ` Christoph Hellwig [this message]
2023-05-23 0:58 ` Darrick J. Wong
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