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Fri, 9 Jan 2026 13:06:15 -0500 (EST) Date: Fri, 9 Jan 2026 10:06:23 -0800 From: Boris Burkov To: Dimitrios Apostolou Cc: linux-btrfs@vger.kernel.org Subject: Re: error in btrfs_create_pending_block_groups:2788: errno=-17 Object already exists Message-ID: <20260109180623.GA3035730@zen.localdomain> References: <20260108225254.GA2633085@zen.localdomain> 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: On Fri, Jan 09, 2026 at 12:18:43PM +0100, Dimitrios Apostolou wrote: > On Thursday 2026-01-08 23:52, Boris Burkov wrote: > > > Are you able to reproduce it or did it happen just once? > > It only happened once. I didn't try to recover the fs, was worried about > future data integrity. No problem, I'll just work on reproducing it. > > So I decided to follow a different strategy, copying the block device > containing the btrfs instead of cp'ing the contents to a new btrfs. > > If I see it again, are there any debug operations to get more info? > No, I was more hoping to instrument a reproducer. I have plenty of examples to dig into. Thanks, Boris > > Dimitris >