From: Christoph Hellwig <hch@infradead.org>
To: Jeff Layton <jlayton@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Al Viro <viro@ZenIV.linux.org.uk>, Jan Kara <jack@suse.cz>,
tytso@mit.edu, axboe@kernel.dk, mawilcox@microsoft.com,
ross.zwisler@linux.intel.com, corbet@lwn.net,
Chris Mason <clm@fb.com>, Josef Bacik <jbacik@fb.com>,
David Sterba <dsterba@suse.com>,
"Darrick J . Wong" <darrick.wong@oracle.com>,
Carlos Maiolino <cmaiolino@redhat.com>,
Eryu Guan <eguan@redhat.com>, David Howells <dhowells@redhat.com>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org,
linux-btrfs@vger.kernel.org, linux-block@vger.kernel.org
Subject: Re: [PATCH v7 16/22] block: convert to errseq_t based writeback error tracking
Date: Tue, 27 Jun 2017 08:20:00 -0700 [thread overview]
Message-ID: <20170627152000.GA29664@infradead.org> (raw)
In-Reply-To: <1498487658.5168.8.camel@redhat.com>
On Mon, Jun 26, 2017 at 10:34:18AM -0400, Jeff Layton wrote:
> The bigger question is -- what about more complex filesystems like
> ext4? There are a couple of cases where we can return -EIO or -EROFS on
> fsync before filemap_write_and_wait_range is ever called. Like this one
> for instance:
>
> if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))
> return -EIO;
>
> ...and the EXT4_MF_FS_ABORTED case.
>
> Are those conditions ever recoverable, such that a later fsync could
> succeed? IOW, could I do a remount or something such that the existing
> fds are left open and become usable again?
This looks copied from the xfs forced shutdown code, and in that
case it's final and permanent - you'll need an unmount to
clear it.
> If so, then we really ought to advance the errseq_t in the file when we
> catch those cases as well. If we have to do that, then it probably makes
> sense to leave the ext4 patch as-is.
I think it can switch to the new file helper.
next prev parent reply other threads:[~2017-06-27 15:20 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-16 19:34 [PATCH v7 00/22] fs: enhanced writeback error reporting with errseq_t (pile #1) Jeff Layton
2017-06-16 19:34 ` [PATCH v7 01/22] fs: remove call_fsync helper function Jeff Layton
2017-06-20 12:31 ` Christoph Hellwig
2017-06-20 15:33 ` Jan Kara
2017-06-26 8:05 ` Carlos Maiolino
2017-06-16 19:34 ` [PATCH v7 02/22] buffer: use mapping_set_error instead of setting the flag Jeff Layton
2017-06-16 19:34 ` [PATCH v7 03/22] fs: check for writeback errors after syncing out buffers in generic_file_fsync Jeff Layton
2017-06-16 19:34 ` [PATCH v7 04/22] buffer: set errors in mapping at the time that the error occurs Jeff Layton
2017-06-26 8:19 ` Carlos Maiolino
2017-06-16 19:34 ` [PATCH v7 05/22] jbd2: don't clear and reset errors after waiting on writeback Jeff Layton
2017-06-20 15:32 ` Jan Kara
2017-06-26 8:23 ` Carlos Maiolino
2017-06-16 19:34 ` [PATCH v7 06/22] mm: clear AS_EIO/AS_ENOSPC when writeback initiation fails Jeff Layton
2017-06-16 19:34 ` [PATCH v7 07/22] mm: don't TestClearPageError in __filemap_fdatawait_range Jeff Layton
2017-06-16 19:34 ` [PATCH v7 08/22] mm: clean up error handling in write_one_page Jeff Layton
2017-06-16 19:34 ` [PATCH v7 09/22] fs: always sync metadata in __generic_file_fsync Jeff Layton
2017-06-16 19:34 ` [PATCH v7 10/22] lib: add errseq_t type and infrastructure for handling it Jeff Layton
2017-06-16 19:34 ` [PATCH v7 11/22] fs: new infrastructure for writeback error handling and reporting Jeff Layton
2017-06-20 12:34 ` Christoph Hellwig
2017-06-20 12:56 ` Jeff Layton
2017-06-16 19:34 ` [PATCH v7 12/22] mm: tracepoints for writeback error events Jeff Layton
2017-06-16 19:34 ` [PATCH v7 13/22] mm: set both AS_EIO/AS_ENOSPC and errseq_t in mapping_set_error Jeff Layton
2017-06-16 19:34 ` [PATCH v7 14/22] Documentation: flesh out the section in vfs.txt on storing and reporting writeback errors Jeff Layton
2017-06-16 19:34 ` [PATCH v7 15/22] dax: set errors in mapping when writeback fails Jeff Layton
2017-06-17 12:39 ` Jeff Layton
2017-06-19 17:48 ` Ross Zwisler
2017-06-16 19:34 ` [PATCH v7 16/22] block: convert to errseq_t based writeback error tracking Jeff Layton
2017-06-20 12:35 ` Christoph Hellwig
2017-06-20 17:44 ` Jeff Layton
2017-06-24 11:59 ` Christoph Hellwig
2017-06-24 13:16 ` Jeff Layton
2017-06-26 14:34 ` Jeff Layton
2017-06-27 15:20 ` Christoph Hellwig [this message]
2017-06-16 19:34 ` [PATCH v7 17/22] ext4: use errseq_t based error handling for reporting data writeback errors Jeff Layton
2017-06-16 19:34 ` [PATCH v7 18/22] fs: add f_md_wb_err field to struct file for tracking metadata errors Jeff Layton
2017-06-16 19:34 ` [PATCH v7 19/22] ext4: add more robust reporting of metadata writeback errors Jeff Layton
2017-06-16 19:34 ` [PATCH v7 20/22] ext2: convert to errseq_t based writeback error tracking Jeff Layton
2017-06-16 19:34 ` [PATCH v7 21/22] xfs: minimal conversion to errseq_t writeback error reporting Jeff Layton
2017-06-26 13:40 ` Carlos Maiolino
2017-06-26 15:22 ` Darrick J. Wong
2017-06-26 17:58 ` jlayton
2017-06-26 18:10 ` Darrick J. Wong
2017-06-16 19:34 ` [PATCH v7 22/22] btrfs: minimal conversion to errseq_t writeback error reporting on fsync Jeff Layton
2017-06-19 16:23 ` [PATCH v7 00/22] fs: enhanced writeback error reporting with errseq_t (pile #1) Jeff Layton
2017-06-19 23:25 ` Stephen Rothwell
2017-06-20 10:16 ` Jeff Layton
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