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Thu, 17 Sep 2026 17:26:38 +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 K71dAc4irGrQRQAAD6G6ig (envelope-from ); Thu, 17 Sep 2026 17:26:38 +0000 Date: Thu, 17 Sep 2026 19:26:36 +0200 From: David Sterba To: Anand Suveer Jain Cc: Dave Hansen , sashal@kernel.org, linux-btrfs@vger.kernel.org, David Woodhouse , David Sterba , "Macieira, Thiago" Subject: Re: [PATCH 1/3] btrfs: derive f_fsid from on-disk fsuuid and dev_t Message-ID: <20260917172636.GW54722@suse.cz> Reply-To: dsterba@suse.cz References: <20260911172313.GA54722@twin.jikos.cz> <20260914131455.GH54722@suse.cz> <847b96c6-9e39-4eef-889c-3985f7eb4e3a@kernel.org> 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: <847b96c6-9e39-4eef-889c-3985f7eb4e3a@kernel.org> User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) X-Spam-Score: -4.00 X-Spam-Level: X-Spamd-Result: default: False [-4.00 / 50.00]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; HAS_REPLYTO(0.30)[dsterba@suse.cz]; NEURAL_HAM_SHORT(-0.20)[-0.996]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_ALL(0.00)[]; RCPT_COUNT_SEVEN(0.00)[7]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; TO_DN_SOME(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.cz:replyto,suse.cz:mid]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; REPLYTO_ADDR_EQ_FROM(0.00)[]; REPLYTO_DOM_NEQ_TO_DOM(0.00)[] X-Spam-Flag: NO On Wed, Sep 16, 2026 at 12:11:01AM +0800, Anand Suveer Jain wrote: > > I don't see the temp_fsid documented (btrfs-progs) other than in the > > changelogs and briefly in the sysfs file. This should be more visible as > > a separate feature and with the known use cases. > > Agreed. Do you think btrfs(5) is a good place to document temp_fsid? Yes, please add a section and also explain the other filesystem ids and how they're related. We can add references from other places using it (sysfs, mount and others).