Date: Fri, 24 Oct 2025 15:50:47 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Warner Losh <imp@bsdimp.com> Cc: Konstantin Belousov <kostikbel@gmail.com>, src-committers <src-committers@freebsd.org>, "<dev-commits-src-all@freebsd.org>" <dev-commits-src-all@freebsd.org>, "<dev-commits-src-main@freebsd.org>" <dev-commits-src-main@freebsd.org> Subject: Re: git: 2612f1b8649b - main - deadfs: Return ENXIO instead of EIO when the device is gone. Message-ID: <202510241550.59OFolH7062303@critter.freebsd.dk> In-Reply-To: <CANCZdfrTZCCFqeMmLNVfm_R9uUfOrOgnT9m5nABOPWvAdwnKjg@mail.gmail.com> References: <202510240741.59O7fBAe041995@gitrepo.freebsd.org> <aPs27Dc_w10t3ENH@kib.kiev.ua> <202510241012.59OACUDA002781@critter.freebsd.dk> <aPtWo1UP-UpPdsVf@kib.kiev.ua> <202510241116.59OBG1ii003074@critter.freebsd.dk> <aPtnt9siqT5R_32l@kib.kiev.ua> <CANCZdfrCa7PXtXEPU-O5Lgn3CkY86u-%2BP=pxVz%2BszAVxij9Hgw@mail.gmail.com> <202510241314.59ODEq5a035616@critter.freebsd.dk> <202510241450.59OEo3Vp043004@critter.freebsd.dk> <CANCZdfrTZCCFqeMmLNVfm_R9uUfOrOgnT9m5nABOPWvAdwnKjg@mail.gmail.com>
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-------- Warner Losh writes: > --000000000000d0eb540641e8d38b > Content-Type: text/plain; charset="UTF-8" > Content-Transfer-Encoding: quoted-printable > > On Fri, Oct 24, 2025, 10:50=E2=80=AFAM Poul-Henning Kamp <phk@phk.freebsd.d= > k> wrote: > > > I updated the "ThinkCenter" to 15-BETA2-p1 and made some experiments > > and I get different results no than before. > > > > This is obviously without the fix. > > > > > > Now I see 25 read(2)'s return EIO before ENXIO arrives. > > > > Each of those 25 read(2)'s do: > > > > read(2) syscall > > all the way down to CAM > > for 4(?) retries: > > CAM sends CCB down > > CAM gets CCB back with error > > CAM printf's two lines to console > > CAM returns EIO > > userland gets EIO > > userland printf's to stdout (=3Dconsole) > > > > What are the cam messages? https://phk.freebsd.dk/misc/IMG_20251024_174810.jpg -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.home | help
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