Regarding KGDB setup over serial cable

[Vivek Panwar]

HI Mulyadi ,

Please find below my */proc/mounts* and */etc/fstab* files detail:

*mounts:*

rootfs / rootfs rw 0 0
none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
none /proc proc rw,nosuid,nodev,noexec,relatime 0 0
none /dev devtmpfs rw,relatime,size=1944452k,nr_inodes=486113,mode=755 0 0
none /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000
0 0
fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
/dev/disk/by-uuid/6ef7b91e-7416-4908-97ba-bfb212081a68 / ext4
rw,relatime,errors=remount-ro,barrier=1,data=ordered 0 0
none /sys/kernel/debug debugfs rw,relatime 0 0
none /sys/kernel/security securityfs rw,relatime 0 0
none /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0
none /var/run tmpfs rw,nosuid,relatime,mode=755 0 0
none /var/lock tmpfs rw,nosuid,nodev,noexec,relatime 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc
rw,nosuid,nodev,noexec,relatime 0 0
gvfs-fuse-daemon /home/vivekp/.gvfs fuse.gvfs-fuse-daemon
rw,nosuid,nodev,relatime,user_id=1000,group_id=1000 0 0

*fstab*

# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    nodev,noexec,nosuid 0       0
# / was on /dev/sda1 during installation
UUID=6ef7b91e-7416-4908-97ba-bfb212081a68 /               ext4
errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=115ae7e6-e27b-4577-9eb1-ab18ecf83877 none            swap
sw              0       0




Thanks
Vivek


On Wed, Oct 17, 2012 at 3:56 PM, Vivek Panwar <vivekpanwar2008 at gmail.com>wrote:

>
> Hi Mulyadi,
>
> I did some googling and found one clue that i have to change file system
> in menuconfig file for EXT4 , which support both EXT2 and EXT3 as well,
> so for that i have enable below features in file systems...
>
> # CONFIG_EXT2_FS=n
> # CONFIG_EXT3_FS=n
>
> CONFIG_EXT4_USE_FOR_EXT2 3=Y
>
> After these modifications i crossed earlier error but hit back with 2 new
> errors , below is the description:
>
> 1) EXT4-fs(sda2): could not mount as ext3 due to feature incompatibilities
>     EXT4-fs(sda2): could not mount as ext2 due to feature incompatibilities
>     udevd[1075]:error creating queue file
>     init: udev mian process 1075 terminated with status 1
>     init: udev main process ended , respawing
>     init: udevmonitor main process 1080 terminated with status 2
>
>
> 2) init: plymouth main process(1038) killed by SEGV signal *(This error
> happens ones i skip mounting process)*
>
>
> Can you please elaborate the procedure to update file system or correct me
> if i am doing wrong ?
>
> Thanks for your support
>
>
> Thanks,
> Vivek
>
>
>
>
> On Tue, Oct 16, 2012 at 11:20 PM, Mulyadi Santosa <
> mulyadi.santosa at gmail.com> wrote:
>
>> Hi....
>>
>> On Tue, Oct 16, 2012 at 12:34 PM, Vivek Panwar
>> <vivekpanwar2008 at gmail.com> wrote:
>> > Hi Mulyadi,
>> >
>> > Below is the kernel panic logs i am getting, for your analysis:
>> >
>> > [0.820851] tg3 0000:02:00.0: Problem fetching invariants of chip,
>> aborting
>> >
>> > [1.408713] EXT3 -f3 (sda1):error:could not mount because of unsupported
>> > optional features (240)
>> >
>> > [1.449074] Kernel panic - not syncing : VFS: unable to mount root fs on
>> > unknown -block(8,1)
>>
>> Seems like, you forgot to compile the filesystem support of your root
>> filesystem.
>>
>> Try to check that...if the root fs (sda1, from what you wrote) is
>> ext2, then check if ext2 module is made builtin or included in
>> initrd/initramfs...and so on
>>
>>
>> --
>> regards,
>>
>> Mulyadi Santosa
>> Freelance Linux trainer and consultant
>>
>> blog: the-hydra.blogspot.com
>> training: mulyaditraining.blogspot.com
>>
>
>
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