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From: Christoph Hellwig <hch@lst.de>
To: "Darrick J. Wong" <djwong@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>,
	Andrey Albershteyn <aalbersh@kernel.org>,
	Hans Holmberg <hans.holmberg@wdc.com>,
	linux-xfs@vger.kernel.org
Subject: Re: [PATCH 27/45] xfs_repair: support repairing zoned file systems
Date: Thu, 10 Apr 2025 08:27:49 +0200	[thread overview]
Message-ID: <20250410062749.GB31075@lst.de> (raw)
In-Reply-To: <20250409161012.GC6283@frogsfrogsfrogs>

On Wed, Apr 09, 2025 at 09:10:12AM -0700, Darrick J. Wong wrote:
> On Wed, Apr 09, 2025 at 09:55:30AM +0200, Christoph Hellwig wrote:
> > Note really much to do here.  Mostly ignore the validation and
> > regeneration of the bitmap and summary inodes.  Eventually this
> > could grow a bit of validation of the hardware zone state.
> 
> What do we actually do about the hardware zone state?  If the write
> pointer is lower than wherever the rtrmapbt thinks it is, then we're
> screwed, right?

Yes.  See offlist discussion with Hans.

> Does it matter if the hw write pointer is higher than where the rtrmapbt
> thinks it is?  In that case, a new write will be beyond the last write
> that the filesystem knows about, but the device will tell us the disk
> address so it's all good aside from the freertx counters being wrong.  I
> think?

Yes.  That's actually a totally expected case for an unclean shutdown
with data I/O in flight.  freertx is recalculate at each mount, and
the space not recorded in the rmapbt is simply marked as reclaimable
through garbage collection.


  reply	other threads:[~2025-04-10  6:27 UTC|newest]

Thread overview: 95+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-09  7:55 xfsprogs support for zoned devices Christoph Hellwig
2025-04-09  7:55 ` [PATCH 01/45] xfs: generalize the freespace and reserved blocks handling Christoph Hellwig
2025-04-09  7:55 ` [PATCH 02/45] FIXUP: " Christoph Hellwig
2025-04-09 15:32   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 03/45] xfs: make metabtree reservations global Christoph Hellwig
2025-04-09  7:55 ` [PATCH 04/45] FIXUP: " Christoph Hellwig
2025-04-09 15:43   ` Darrick J. Wong
2025-04-10  6:00     ` Christoph Hellwig
2025-04-09  7:55 ` [PATCH 05/45] xfs: reduce metafile reservations Christoph Hellwig
2025-04-09  7:55 ` [PATCH 06/45] xfs: add a rtg_blocks helper Christoph Hellwig
2025-04-09  7:55 ` [PATCH 07/45] xfs: move xfs_bmapi_reserve_delalloc to xfs_iomap.c Christoph Hellwig
2025-04-09  7:55 ` [PATCH 08/45] xfs: support XFS_BMAPI_REMAP in xfs_bmap_del_extent_delay Christoph Hellwig
2025-04-09  7:55 ` [PATCH 09/45] xfs: add a xfs_rtrmap_highest_rgbno helper Christoph Hellwig
2025-04-09  7:55 ` [PATCH 10/45] xfs: define the zoned on-disk format Christoph Hellwig
2025-04-09  7:55 ` [PATCH 11/45] FIXUP: " Christoph Hellwig
2025-04-09 15:47   ` Darrick J. Wong
2025-04-09 16:04     ` Darrick J. Wong
2025-04-10  6:01     ` Christoph Hellwig
2025-04-10 16:31       ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 12/45] xfs: allow internal RT devices for zoned mode Christoph Hellwig
2025-04-09  7:55 ` [PATCH 13/45] FIXUP: " Christoph Hellwig
2025-04-09 15:55   ` Darrick J. Wong
2025-04-10  6:09     ` Christoph Hellwig
2025-04-09  7:55 ` [PATCH 14/45] xfs: export zoned geometry via XFS_FSOP_GEOM Christoph Hellwig
2025-04-09  7:55 ` [PATCH 15/45] xfs: disable sb_frextents for zoned file systems Christoph Hellwig
2025-04-09  7:55 ` [PATCH 16/45] xfs: parse and validate hardware zone information Christoph Hellwig
2025-04-09  7:55 ` [PATCH 17/45] FIXUP: " Christoph Hellwig
2025-04-09 15:56   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 18/45] xfs: add the zoned space allocator Christoph Hellwig
2025-04-09  7:55 ` [PATCH 19/45] xfs: add support for zoned space reservations Christoph Hellwig
2025-04-09  7:55 ` [PATCH 20/45] FIXUP: " Christoph Hellwig
2025-04-09 15:56   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 21/45] xfs: implement zoned garbage collection Christoph Hellwig
2025-04-09  7:55 ` [PATCH 22/45] xfs: enable fsmap reporting for internal RT devices Christoph Hellwig
2025-04-09  7:55 ` [PATCH 23/45] xfs: enable the zoned RT device feature Christoph Hellwig
2025-04-09  7:55 ` [PATCH 24/45] xfs: support zone gaps Christoph Hellwig
2025-04-09  7:55 ` [PATCH 25/45] FIXUP: " Christoph Hellwig
2025-04-09 15:57   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 26/45] libfrog: report the zoned flag Christoph Hellwig
2025-04-09 15:58   ` Darrick J. Wong
2025-04-10  6:14     ` Christoph Hellwig
2025-04-10 16:36       ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 27/45] xfs_repair: support repairing zoned file systems Christoph Hellwig
2025-04-09 16:10   ` Darrick J. Wong
2025-04-10  6:27     ` Christoph Hellwig [this message]
2025-04-10 16:41       ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 28/45] xfs_repair: fix the RT device check in process_dinode_int Christoph Hellwig
2025-04-09 16:11   ` Darrick J. Wong
2025-04-10  6:29     ` Christoph Hellwig
2025-04-09  7:55 ` [PATCH 29/45] xfs_repair: validate rt groups vs reported hardware zones Christoph Hellwig
2025-04-09 18:41   ` Darrick J. Wong
2025-04-10  6:34     ` Christoph Hellwig
2025-04-10 16:43       ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 30/45] xfs_mkfs: support creating zoned file systems Christoph Hellwig
2025-04-09 18:54   ` Darrick J. Wong
2025-04-10  6:45     ` Christoph Hellwig
2025-04-10 16:45       ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 31/45] xfs_mkfs: calculate zone overprovisioning when specifying size Christoph Hellwig
2025-04-09 19:06   ` Darrick J. Wong
2025-04-10  7:00     ` Christoph Hellwig
2025-04-09  7:55 ` [PATCH 32/45] xfs_mkfs: default to rtinherit=1 for zoned file systems Christoph Hellwig
2025-04-09 18:59   ` Darrick J. Wong
2025-04-10  6:45     ` Christoph Hellwig
2025-04-09  7:55 ` [PATCH 33/45] xfs_mkfs: reflink conflicts with zoned file systems for now Christoph Hellwig
2025-04-09 19:00   ` Darrick J. Wong
2025-04-10  6:46     ` Christoph Hellwig
2025-04-10 16:47       ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 34/45] xfs_mkfs: document the new zoned options in the man page Christoph Hellwig
2025-04-09 19:00   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 35/45] libfrog: report the zoned geometry Christoph Hellwig
2025-04-09 19:01   ` Darrick J. Wong
2025-04-10  7:02     ` Christoph Hellwig
2025-04-09  7:55 ` [PATCH 36/45] man: document XFS_FSOP_GEOM_FLAGS_ZONED Christoph Hellwig
2025-04-09 19:13   ` Darrick J. Wong
2025-04-10  6:53     ` Christoph Hellwig
2025-04-10 16:47       ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 37/45] xfs_io: correctly report RGs with internal rt dev in bmap output Christoph Hellwig
2025-04-09 22:22   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 38/45] xfs_io: don't re-query fs_path information in fsmap_f Christoph Hellwig
2025-04-09 20:48   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 39/45] xfs_io: don't re-query geometry " Christoph Hellwig
2025-04-09 20:46   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 40/45] xfs_io: handle internal RT devices in fsmap output Christoph Hellwig
2025-04-09 21:48   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 41/45] xfs_spaceman: handle internal RT devices Christoph Hellwig
2025-04-09 19:29   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 42/45] xfs_scrub: support internal RT sections Christoph Hellwig
2025-04-09 19:30   ` Darrick J. Wong
2025-04-10  6:57     ` Christoph Hellwig
2025-04-09  7:55 ` [PATCH 43/45] xfs_scrub: handle internal RT devices Christoph Hellwig
2025-04-09 19:34   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 44/45] xfs_mdrestore: support " Christoph Hellwig
2025-04-09 19:36   ` Darrick J. Wong
2025-04-09  7:55 ` [PATCH 45/45] xfs_growfs: " Christoph Hellwig
2025-04-09 19:35   ` Darrick J. Wong

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