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Message-ID: Mail-Followup-To: "linux-btrfs@vger.kernel.org" References: <20240428233134.GA355040@tik.uni-stuttgart.de> <6609017e-8931-4559-b613-4b3e28d9fb48@wdc.com> <20240501085012.GA393383@tik.uni-stuttgart.de> Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="MsggIOXU6ct5hIIk" Content-Disposition: inline In-Reply-To: <20240501085012.GA393383@tik.uni-stuttgart.de> --MsggIOXU6ct5hIIk Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On 2024-05-01 10:50:12 +0200, Ulli Horlacher wrote: > On Mon 2024-04-29 (12:34), Johannes Thumshirn wrote: > > > I have used 2PB filesystems in my RAID Stripe Tree test environment, but > > for practical uses, I suggest you to enable the block-group tree feature > > during mkfs time. > > I cannot find such an option in man-page for mkfs.btrfs $ mkfs.btrfs -O list-all Filesystem features available: mixed-bg - mixed data and metadata block groups (compat=2.6.37, safe=2.6.37) quota - quota support (qgroups) (compat=3.4) extref - increased hardlink limit per file to 65536 (compat=3.7, safe=3.12, default=3.12) raid56 - raid56 extended format (compat=3.9) skinny-metadata - reduced-size metadata extent refs (compat=3.10, safe=3.18, default=3.18) no-holes - no explicit hole extents for files (compat=3.14, safe=4.0, default=5.15) free-space-tree - free space tree (space_cache=v2) (compat=4.5, safe=4.9, default=5.15) raid1c34 - RAID1 with 3 or 4 copies (compat=5.5) zoned - support zoned devices (compat=5.12) block-group-tree - block group tree to reduce mount time (compat=6.1) So I believe it would be `mkfs.btrfs -O block-group-tree ...'. > > > -- > Ullrich Horlacher Server und Virtualisierung > Rechenzentrum TIK > Universitaet Stuttgart E-Mail: horlacher@tik.uni-stuttgart.de > Allmandring 30a Tel: ++49-711-68565868 > 70569 Stuttgart (Germany) WWW: https://www.tik.uni-stuttgart.de/ > REF:<6609017e-8931-4559-b613-4b3e28d9fb48@wdc.com> > -- There are only two hard things in Computer Science: cache invalidation, naming things and off-by-one errors. --MsggIOXU6ct5hIIk Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEt4NJs4wUfTYpiGikL7/ufbZ/wakFAmYyTroACgkQL7/ufbZ/ walxbxAAp+JDRGQaIC0Ry2SrPwUDIsW5ACy0TGq8m3n/8l12qW4248fv/SMR6N2G 2CI63gya2v8wYwrV7kKwlrZnzs2S7b8k31Xm8zXfWkJqSsIcMCEs/fHsHHx3wMB+ 4nMK+2P19lvRSQMCOtKk7h9klgqFrngxEe4kSGQBJEBxoc61WWUYKmQdO/x1kI0E AhiXNJ+WRN12/gZ54R2EzE6VGGA69MbayJGO4MTSc1vrIsJ6ltnLIwcBR13QeSU0 TtVHKSpO/YIiLEBeZrPZQlZy0+A13Zym5HQZWBUzLO6AQO3FIoMFllh7Zzr1S64D jZnVZRjtIoiDISZm7nyYh/v9LHX2bQFhoM5Nx5+QcJi7hR42rbhgmoExA/zM05WN u3R85QywHwkS4sw2cOO4YSqr3JD7KApQ7SDHVs+Xrsgi7Du3g6Z3KRTV5VBkXd1s 1RE7IbJkXcXArUd+nmoyZpwgMfy8zsVWxjeqHkBez4Y/SGX1lW4pHYaJxbnOn5Aw UFZrgd5/oThMiP0C0dFgTwyNNr6XtyCjkL78IUc+U8ZA+7+dsYEqEPlUJli4C7dA ZUkl8w9FkgBKV48UdoSv8TEG86Nipb3HTZP0JnJedDuycFeZTVQjo8oNJksDhZzM noV4g/v3aDYbTW+GIKoCxIlcUbknkFWYCJqkLVkEhdktM0WSSu0= =HPGK -----END PGP SIGNATURE----- --MsggIOXU6ct5hIIk--