Date: Fri, 28 Dec 2018 09:07:49 -0700 From: Ian Lepore <ian@freebsd.org> To: Matthias Apitz <guru@unixarea.de>, freebsd-current@freebsd.org Subject: Re: r342378 fails sometimes on boot mounting root (error 2) Message-ID: <1546013269.78877.85.camel@freebsd.org> In-Reply-To: <20181228145432.GA2249@c720-r314251> References: <20181228145432.GA2249@c720-r314251>
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On Fri, 2018-12-28 at 15:54 +0100, Matthias Apitz wrote: > Hello, > > I've setup a new r342378 (December 23) for amd64 onto an external > disk > with this procedure: > > # grep da0 /var/log/messages > ... > Dec 28 14:20:01 c720-r314251 kernel: da0 at umass-sim0 bus 0 scbus1 > target 0 lun 0 > Dec 28 14:20:01 c720-r314251 kernel: da0: <WD Elements SE 25FE 1021> > Fixed Direct Access SPC-4 SCSI device > Dec 28 14:20:01 c720-r314251 kernel: da0: Serial Number > 575854314134383033483150 > Dec 28 14:20:01 c720-r314251 kernel: da0: 400.000MB/s transfers > Dec 28 14:20:01 c720-r314251 kernel: da0: 953837MB (1953458176 512 > byte sectors) > Dec 28 14:20:01 c720-r314251 kernel: da0: quirks=0x2<NO_6_BYTE> > > > # gpart destroy -F da0 > da0 destroyed > # gpart create -s gpt da0 > da0 created > # gpart add -t freebsd-boot -s 512k -a4k -l extboot da0 > da0p1 added > # gpart bootcode -b /boot/pmbr -p /boot/gptboot -i1 da0 > partcode written to da0p1 > bootcode written to da0 > # gpart add -t freebsd-ufs -l extrootfs -b 1m -s 256g da0 > da0p2 added > # gpart add -t freebsd-swap -l extswap -a 1m -s 2g da0 > da0p3 added > # gpart add -t freebsd-ufs -l extbackupfs -a 1m da0 > da0p4 added > > # newfs -U /dev/gpt/extrootfs > # newfs -U /dev/gpt/extbackupfs > > # gpart set -a active da0 > active set on da0 > # gpart show -l da0 > => 40 1953458096 da0 GPT (931G) > 40 1024 1 extboot (512K) > 1064 984 - free - (492K) > 2048 536870912 2 extrootfs (256G) > 536872960 4194304 3 extswap (2.0G) > 541067264 1412388864 4 extbackupfs (673G) > 1953456128 2008 - free - (1.0M) > > > # mount /dev/gpt/extrootfs /mnt > > # cd /usr/src > # make installworld DESTDIR=/mnt > # make installkernel DESTDIR=/mnt > # make distrib-dirs DESTDIR=/mnt > # make distribution DESTDIR=/mnt > > # cd ~guru/C720 > > # cp -p rc.conf /mnt/etc > # cp -p c720.kbd /mnt/etc > # cp -p sysctl.conf /mnt/etc > # cp -p loader.conf /mnt/boot/ > # cp -p device.hints /mnt/boot/ > > # cat > /mnt/etc/fstab <<EOF > /dev/gpt/extrootfs / ufs rw,noatime 1 1 > /dev/gpt/extswap none swap sw 0 0 > EOF > > # chroot /mnt passwd root > Changing local password for root > New Password: > > # umount /mnt > > The disk now boots sometimes fine, more times it fails with: > > Trying to mount root from ufs:/dev/gpt/extroot [rw, noatime]... > Mounting from ufs:/dev/gpt/extroot failed with error 2; retrying fpr > 3 seconds > Mounting from ufs:/dev/gpt/extroot failed with error 2; retrying fpr > 2 seconds > Mounting from ufs:/dev/gpt/extroot failed with error 2; retrying fpr > 1 seconds > ... > > I can provide a 'dmesg' output from an successful boot, if this > helps. > > Any hints? Thanks > > matthias > Try setting vfs.mountroot.timeout= in loader.conf to a value long enough to let the usb drive get probed reliably. The default is 3 seconds, maybe a value like 5 or 10 would work better for you. -- Ian
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