g_vfs_done():ufs/root1[READ(offset=106196992, length=4096)]error = 6

[Rajkumar S]

Hi,

I am working on a nanobsd derived system for updating an embedded
pfSense image. The disk is partitioned into 4 partitions with 2
similar "code" partitions. One of the two code partition is live at
any moment. To update the partition image is written to the other
partition and a command like boot0cfg -s 2 -v ad2 to boot to the new
partition.

Instead of using device names I am using bsdlabel and refer the disks
using the label in fdisk.

Current partitions are as follows:

nanoimg:~#  fdisk ad2
******* Working on device /dev/ad2 *******
parameters extracted from in-core disklabel are:
cylinders=1999 heads=16 sectors/track=63 (1008 blks/cyl)

Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=1999 heads=16 sectors/track=63 (1008 blks/cyl)

Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
   start 32, size 239584 (116 Meg), flag 80 (active)
       beg: cyl 0/ head 1/ sector 1;
       end: cyl 467/ head 15/ sector 32
The data for partition 2 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
   start 239648, size 239584 (116 Meg), flag 0
       beg: cyl 468/ head 1/ sector 1;
       end: cyl 935/ head 15/ sector 32
The data for partition 3 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
   start 479232, size 2048 (1 Meg), flag 0
       beg: cyl 936/ head 0/ sector 1;
       end: cyl 939/ head 15/ sector 32
The data for partition 4 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
   start 481280, size 20480 (10 Meg), flag 0
       beg: cyl 940/ head 0/ sector 1;
       end: cyl 979/ head 15/ sector 32

dmesg shows the following when booting:

ad2: 983MB <LEXAR ATA FLASH V1.01> at ata1-master PIO4
GEOM: ad2: partition 4 does not start on a track boundary.
GEOM: ad2: partition 4 does not end on a track boundary.
GEOM: ad2: partition 3 does not start on a track boundary.
GEOM: ad2: partition 3 does not end on a track boundary.
GEOM: ad2: partition 2 does not start on a track boundary.
GEOM: ad2: partition 2 does not end on a track boundary.
GEOM: ad2: partition 1 does not start on a track boundary.
GEOM: ad2: partition 1 does not end on a track boundary.
GEOM_LABEL: Label for provider ad2s3 is ufs/cfg.
GEOM_LABEL: Label for provider ad2s4 is ufs/cf.
GEOM_LABEL: Label for provider ad2s1a is ufs/root0.
GEOM_LABEL: Label for provider ad2s2a is ufs/root1.
Trying to mount root from ufs:/dev/ufs/root0

Fstab is:

/dev/ufs/root0 / ufs ro 1 1
/dev/ufs/cfg /cfg ufs rw,noauto 2 2
/dev/ufs/cf /cf ufs ro 1 1

I can switch booting to ufs/root0 or ufs/root1 using a command like

mettlenano:~#  sysctl kern.geom.debugflags=16
kern.geom.debugflags: 0 -> 16

and

mettlenano:~#  boot0cfg -s 1 -v ad2
#   flag     start chs   type       end chs       offset         size
1   0x00      0:  1: 1   0xa5    467: 15:32           32       239584
2   0x80    468:  1: 1   0xa5    935: 15:32       239648       239584
3   0x00    936:  0: 1   0xa5    939: 15:32       479232         2048
4   0x00    940:  0: 1   0xa5    979: 15:32       481280        20480

version=1.0  drive=0x80  mask=0x3  ticks=182
options=packet,update,nosetdrv
default_selection=F1 (Slice 1)

But after executing this command I get the following messages in my dmesg.

GEOM_LABEL: Label ufs/cf removed.
GEOM_LABEL: Label ufs/cfg removed.
GEOM_LABEL: Label ufs/root1 removed.
GEOM_LABEL: Label ufs/root0 removed.
g_vfs_done():ufs/root1[READ(offset=106196992, length=4096)]error = 6
g_vfs_done():ufs/root1[READ(offset=106196992, length=4096)]error = 6
g_vfs_done():ufs/root1[READ(offset=106201088, length=4096)]error = 6

I have no idea why such messages are appearing. Also some commands
like reboot does not work.

mettlenano:~#  reboot
/sbin/reboot: Device not configured.

mettlenano:~#  less
/usr/bin/less: Device not configured.

But some other commands work. Any one with any idea about what could
be wrong here?

raj