Date: Mon, 22 Dec 2025 04:29:47 +0000 From: Martin <iio7@protonmail.com> To: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: Prevent spin-up of USB HD after upgrading to FreeBSD 15 Message-ID: <MQTkKiXBVTjPXdULFHodNXAGP09lwp-WUKRG7ykRpalEPNiAnLzVpVndxK9ga6PlsFqBjqZ0IpxEeeTctEyESBFZ-2X3DWCy712NOABVvxU=@protonmail.com> In-Reply-To: <CANCZdfq6OAK9ZPojp00OP1kRuWUuNnBNW%2BosO5FXeifbMQNBEQ@mail.gmail.com> References: <j7XoSQMU-9G-lOiNcAsrUE4FmIzX26V971Z5fLI7RtfIyvm_6PoXbSksem-pXoMZNy9CchKhGl7C2T9xkQAlL84Y89Y5byUOkOuIwSnBtlY=@protonmail.com> <CANCZdfooL8vCCKbm0txCb%2BTDffGhxc1fDD4SwVLM08tDZPz=GA@mail.gmail.com> <t565nv2ZOb8O-k2pel6bLS_AsjvqgIA6Io6cGvbkWjcPbC_miDkRrqzEWflTpN5hvINq7vwhuZ6y8avls__jRm464UoxN944kTpB-8yXXQc=@protonmail.com> <CANCZdfp7WSETfqxq=bc9fqrFFncYcRgzeJ%2BnyX3xZoOo-xPiAQ@mail.gmail.com> <2ol9PnW7p50uz0__d_HOZzN2nfR0mB_SFeYzSBYdfCzuVJRDQ7xLNL6nlOAqu-PTMiN9ONG01J1mTL4vEFQc66oZVMJTJuGxFDkOG2yQwRc=@protonmail.com> <CANCZdfpkf9_nWKDTUZ3VSK-XyfgvC5RheqRw4gxG3jtuCbrA1w@mail.gmail.com> <KHx7394uinh0FMuTPEUOlXA6f73RBcydhoCmale26K9bsFvJANtTnClNzSUrWj1DEBDaPtlKTa5I36U0-DCEZ4u4tWQnppfCOhPzZAPfFIo=@protonmail.com> <CANCZdfq6OAK9ZPojp00OP1kRuWUuNnBNW%2BosO5FXeifbMQNBEQ@mail.gmail.com>
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On Friday, December 19th, 2025 at 7:52 PM, Warner Losh <imp@bsdimp.com> wrote: > On Thu, Dec 18, 2025 at 11:17 AM Martin <iio7@protonmail.com> wrote: > > > 1 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 b8 00 00 08 00 > > ... > > > 3 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 c0 00 00 10 00 > > 3 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 d0 00 00 08 00 > > 3 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 e0 00 00 10 00 > > 3 32062 xpt_action_default:entry da5: CDB: 8a 00 00 00 00 01 00 00 2a d0 00 00 00 08 00 00 > > 3 32062 xpt_action_default:entry da5: CDB: 8a 00 00 00 00 01 00 00 2c 50 00 00 00 20 00 00 > > 3 32062 xpt_action_default:entry da5: CDB: 8a 00 00 00 00 01 00 00 2d 60 00 00 00 08 00 00 > > 3 32062 xpt_action_default:entry da5: CDB: 8a 00 00 00 00 01 3e 36 29 b0 00 00 00 30 00 00 > > 2 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 f0 00 00 08 00 > > 3 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 f8 00 00 08 00 > > 3 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 26 00 00 00 08 00 > > etc > > So the first byte of the CDB is the opcode. 2a is WRITE(10) and 8a is WRITE(16). So FreeBSD is deciding to write rather a lot to this drive. That's why it's waking up. I'm not sure why it's deciding to write to this zpool (if I recall your original email correctly). Is it mounted and getting traffic somehow? That's the next thing to look into. I didn't see any read opcodes, so maybe this is a resilver? No, it's not mounted and it's a single drive, not in a mirror or anything. No resilvering. I have just upgraded ZFS on my Artix Linux installation from ZFS 2.3.5 to 2.4.0 and now the same is happening there as well, so that's something.help
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