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Date:      Wed, 30 Apr 2014 16:04:06 -0400
From:      grarpamp <grarpamp@gmail.com>
To:        freebsd-stable@freebsd.org
Subject:   Re: RELENG_8: ufs: "ROOT MOUNT ERROR"
Message-ID:  <CAD2Ti28AcsrpydzVrHRpjhgYEx1=MLg-ruqwaCA1n_HfUi1v%2Bw@mail.gmail.com>
In-Reply-To: <alpine.BSF.2.00.1404300936070.1327@mail.fig.ol.no>
References:  <CAD2Ti2-UeqkG0PBJ9cNWGeZRUpgnVoOr6CZt6y1DCdj%2Bow2O2w@mail.gmail.com> <alpine.BSF.2.00.1404300936070.1327@mail.fig.ol.no>

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I just saw the related threads from you and Don a few hours ago.
I haven't digest all of those threads yet, but I have no agp lockup,
mine always made it to mountroot> prompt.

> Try to back out r262226, rebuild the kernel and install that kernel.

That works. I'll do a full rebuild later on, and wait for a commit
mentioning mountroot before moving off the old kernel.

> make -D NO_CLEAN buildkernel

There's also KERNFAST.



Some bits...
Preloaded elf module "/boot/kernel/drm.ko" at 0xc15c6640.
Preloaded elf module "/boot/kernel/i915.ko" at 0xc15c66e8.
agp0: <Intel 82845M (845M GMCH) SVGA controller> on vgapci0
agp0: aperture size is 128M, detected 892k stolen memory
drm0: <Intel i845G GMCH> on vgapci0
info: [drm] AGP at 0xe0000000 128MB
info: [drm] Initialized i915 1.6.0 20080730




Now apparently off topic, yet including for others who might hit
mountroot on a good kernel and want to check more various fs related
things as in my earlier posts...


Disk reads are fine...
dd if=/dev/ad0 of=/dev/null bs=1m conv=noerror
8693+1 records in
8693+1 records out
9115361280 bytes transferred in 604.547960 secs (15077979 bytes/sec)


Fsck is fine...
fsck -fn ad0s1a
** /dev/ad0s1a (NO WRITE)
** Last Mounted on /
** Root file system
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
x files, x used, x free (x frags, x blocks, x.x% fragmentation)


MBR diff limited to the slice table...
diff /boot/boot0 <first_512b_of_ad0>
28,30c28,30
< 000001b0  69 76 65 20 00 00 80 8f  a8 a8 a8 a8 b6 00 00 00  |ive ............|
< 000001c0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
< 000001d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
---
> 000001b0  69 76 65 20 b1 00 80 8f  00 00 80 8f b6 00 80 01  |ive ............|
> 000001c0  01 00 a5 0f ff ff 3f 00  00 00 91 fd 61 00 00 ff  |......?.....a...|
> 000001d0  ff ff a5 0f ff ff d0 fd  61 00 50 aa ad 00 00 00  |........a.P.....|



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