Date: Fri, 19 Dec 2025 12:52:08 -0700 From: Warner Losh <imp@bsdimp.com> To: Martin <iio7@protonmail.com> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: Prevent spin-up of USB HD after upgrading to FreeBSD 15 Message-ID: <CANCZdfq6OAK9ZPojp00OP1kRuWUuNnBNW%2BosO5FXeifbMQNBEQ@mail.gmail.com> In-Reply-To: <KHx7394uinh0FMuTPEUOlXA6f73RBcydhoCmale26K9bsFvJANtTnClNzSUrWj1DEBDaPtlKTa5I36U0-DCEZ4u4tWQnppfCOhPzZAPfFIo=@protonmail.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>
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[-- Attachment #1 --] 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? Warner [-- Attachment #2 --] <div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, Dec 18, 2025 at 11:17 AM Martin <<a href="mailto:iio7@protonmail.com">iio7@protonmail.com</a>> wrote:</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> 1 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 b8 00 00 08 00<br></blockquote><div>... </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> 3 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 c0 00 00 10 00<br> 3 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 d0 00 00 08 00<br> 3 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 e0 00 00 10 00<br> 3 32062 xpt_action_default:entry da5: CDB: 8a 00 00 00 00 01 00 00 2a d0 00 00 00 08 00 00<br> 3 32062 xpt_action_default:entry da5: CDB: 8a 00 00 00 00 01 00 00 2c 50 00 00 00 20 00 00<br> 3 32062 xpt_action_default:entry da5: CDB: 8a 00 00 00 00 01 00 00 2d 60 00 00 00 08 00 00<br> 3 32062 xpt_action_default:entry da5: CDB: 8a 00 00 00 00 01 3e 36 29 b0 00 00 00 30 00 00<br> 2 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 f0 00 00 08 00<br> 3 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 25 f8 00 00 08 00<br> 3 32062 xpt_action_default:entry da5: CDB: 2a 00 c8 00 26 00 00 00 08 00<br></blockquote><div>etc</div><div><br></div><div>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?</div><div><br></div><div>Warner</div></div></div>help
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