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Mon, 1 Jul 2024 13:50:37 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id TJ6wFC20gmYhYwAAD6G6ig (envelope-from ); Mon, 01 Jul 2024 13:50:37 +0000 Date: Mon, 1 Jul 2024 15:50:36 +0200 From: David Sterba To: Naohiro Aota Cc: David Sterba , "linux-btrfs@vger.kernel.org" , Shinichiro Kawasaki , Johannes Thumshirn Subject: Re: [PATCH] btrfs: avoid possible parallel list adding Message-ID: <20240701135036.GC21023@twin.jikos.cz> Reply-To: dsterba@suse.cz References: <58e8574ccd70645c613e6bc7d328e34c2f52421a.1719549099.git.naohiro.aota@wdc.com> <20240701131244.GB21023@twin.jikos.cz> Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) X-Spamd-Result: default: False [-4.21 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; HAS_REPLYTO(0.30)[dsterba@suse.cz]; R_DKIM_ALLOW(-0.20)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; TO_DN_SOME(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; MIME_TRACE(0.00)[0:+]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; ARC_NA(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; TO_DN_EQ_ADDR_SOME(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_FIVE(0.00)[5]; RCVD_COUNT_TWO(0.00)[2]; REPLYTO_ADDR_EQ_FROM(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; DKIM_TRACE(0.00)[suse.cz:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_TLS_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.cz:replyto,suse.cz:dkim,imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns] X-Rspamd-Action: no action X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Queue-Id: 7052021AEB X-Spam-Flag: NO X-Spam-Score: -4.21 X-Spam-Level: On Mon, Jul 01, 2024 at 01:35:56PM +0000, Naohiro Aota wrote: > > This commit has landed in several stable trees so we need to get this > > fixup out quickly. How hard is to hit the problem? It's caught by list > > corruption detection but this is most likely not enabled on distro > > kernels so it might go unnoticed. > > It surely occurs when I run fstests generic/166 some (~5) times. I don't > think it's directly related to the workload, though. It always happens when > it fails to relocate a chunk due to near ENOSPC state. So, I believe it can > happen easily on such tight space filesystem. I see, thanks. This can also happen when profiles are converted and there's not enough chunk space (like with striped profile conversions). Sounds serious to me, I'll expedite the fix but it will still take like a week before it's released. Unfortunatelly it affects kernels up to 5.15.x.