Kernel Panic

pandy669@gmail.com · 02-18-2015, 09:58 AM

Hi everybody ,I am using centos 6.6 X86_64.
I'm new for linux and I think I made some mistake while partitioning my system.
after i have created 4 primary partition in my system i cannot mount it.when i am going to mount in it will display "error:select any file system"
so i cannot mount it.
After that i have mentaly decided to restart my system.
when rebooted my system it'll not booted
the following error is occured.

Code:

Kernel Panic - not syncing: Attempted to kill init!
pid:1,comm: init not trainted 2.6.32-504.8.1.el6.x86_64 #1
call trace:[<fffffffffffff815292d6>]? PANIC+0XA7/0X16F
.
.
.
.

DRM_KMSZ-HELPER:PANIC OCCURED,SWITCHING BACK TO TEXT console

I have tried in rescue mode but in rescue mode the text mode is not display for me.
I dont know what to do .I am in critical sutuation.
please help me.please .

veerain · 02-18-2015, 11:58 AM

How was it partitioned previously and presently?

From a livecd try using testdisk.

pandy669@gmail.com · 02-18-2015, 10:49 PM

previously
sda1 /boot
sda2 /home

in sda2 the memory was 950GB and sda1 was 35GB

thats why i have tried to extend the number of partitions from sda2

first i was unmount sda2 from home directory.And then created partition
as sda2,sda3,sda4.

I think this partition might contain os installed data.
After i have created the partitions I cant mount with any directory .
It'l reply no filesystem assigned.

then only i have decided to restart my systems
I dont mind to clear this problems.
when i tried to rescue mode after some click like language place and network it will not display any text mode screen.
blank screen only displayed.
there cant execute any commend
please hekp me .

pandy669@gmail.com · 02-19-2015, 12:06 AM

there is no way to enter the testdisk after i have inserted the os dvd.
and there is a rescue mode but that is not displaying any textmode commmand.
when i try to install os it'll display

Code:

An unhandled exception has occured.this is most likely a bug.please save a copy of the detailed exception and file a bug report.

details:
anaconda 13.21.215 exception report
tracebook;:
File "/usr/lib/anaconda/storage/devicelibs/lvm.py",line 416,in lvactivate
raise LVMError("lvactivate failed for %s:%s"%(lv_name,msg)))
similarly in 2506,1631,2068,2162,452 etc lines are errors displing.

ANd LVMError:lvactivate failed for lv_home:05:23:44,403 ERROR : unable ro resume vg_server-lv_home(253:0)

and etc errors are displayng in a message box and it ask to debug or save or exit to next during the installation.
I ave just tried to install os .
I think os setup file was unmounted from /home directory.
there is any way to bring my system in previous stage

pandy669@gmail.com · 02-19-2015, 01:05 AM

please this is very urjent
help me

veerain · 02-19-2015, 04:32 AM

Get testdisk from here.

pandy669@gmail.com · 02-19-2015, 08:41 AM

sorry i have formated my sytem.
thanks to make some time for me.
I need help .
my system is in old stage
my partitions are

Code:

[root@server ~]# fdisk -l

Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x6f52c4f9

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      512000   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              64      121602   976248832   8e  Linux LVM

Disk /dev/mapper/vg_server-lv_root: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_server-lv_swap: 8287 MB, 8287944704 bytes
255 heads, 63 sectors/track, 1007 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_server-lv_home: 937.7 GB, 937699573760 bytes
255 heads, 63 sectors/track, 114002 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

and df -h is

Code:

[root@server ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_server-lv_root
                       50G  4.8G   42G  11% /
tmpfs                 3.8G  992K  3.8G   1% /dev/shm
/dev/sda1             485M   66M  395M  15% /boot
/dev/mapper/vg_server-lv_home
                      860G  2.6G  814G   1% /home

my question is how to partition the 860GB as sda2,3 etc
And these are not aligned properly.
this is not look understandable.
please give idea to make partitions good.

this is the default partion in my centos 6.6

thank you