vxfs mount: /dev/vg02/lvlcbhsrc no such device

[Jayasuntar]

Hi all,

After rebooting the system I found lot of file sytem didnt mount. While tried to mount manullay I got the mesg the vxfs mount: no such device found.

I tried fsck -o full -y - went w/o any error
I listed the dev file at /dev/vg02- it is there
I tried fstyp -v /dev/vg02/lvlcbhsrc - that is also ok

What could be the problem?..

Regards

Jay

[melvyn burnard]

Is the VG activated?
do vgdisplay /dev/vg02
Check the/etc/rc.log for startup info

[Jayasuntar]

Dear Melvyn,

Yes, vg is activated, and other FS in the same VG got mounted.


While boot I got error that
ifiles inode should reconnect (y/N) Y

lost+found directory not found
colud not reconnect.

After that it went normal.

Jay

[Bharat Katkar]

Hi Jay,
By any chance the lv got deactivted. Can you try this:
# lvchange -a y /dev/vg02/lvlcbhsrc

What does lvdisplay say?

And see if that works for you.


Regards,

[Jayasuntar]

Dear Bharat,

lvchange -a y /dev/vg02/lvlcbhsrc says that, successfully changed, and the vg02 conf is stored in conf file.

But even after that I am getting same error mesg.

Jay

[Bharat Katkar]

Hi Jay,
Are you able to execute lvdisplay. Can you post this output.

# lvdisplay -v /dev/vg02/lvlcbhsrc

Regards,

[Jayasuntar]

yes Bharat,

lvdisplay is working.

Please see the output below.

--- Logical volumes ---
LV Name /dev/vg02/lvlcbhsrc
VG Name /dev/vg02
LV Permission read/write
LV Status available/syncd
Mirror copies 0
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 4096
Current LE 256
Allocated PE 256
Stripes 0
Stripe Size (Kbytes) 0
Bad block on
Allocation strict
IO Timeout (Seconds) default

Jay

[Devender Khatana]

Hi Jay,

What was the actual cause of the problem? Did you conclude something ?

I suspect that the particular file systems is gone and you will have to do a restore from backup.

Before that you can try reactivating the VG and then see if the device file comes back.

#unmount file systems from this VG.

#vgchange -a n /deg/vg02

#vgchange -a y /dev/vg02

If still does not come I would go for a restore. The corruption could be due to hardware failure, if so replace it before restoring.


HTH,
Devender

[Bharat Katkar]

Hi Jay,
Well it's confusing now but can you try by explicitly specifying the File System type in mount command.

# mount -F vxfs /dev/vg02/lvlcbhsrc /mountpoint

Regards,

[Jayasuntar]

Hi Bharat,

I tried already by specifying the FS type, still not working.

Is there anyother way to recover other than restoring it from tape.

jay

[Abhijit P.]

Hi...

Could you please check out whether minor no.s of the LVs which are not mounting are ok.

or please paste the o/p of ll /dev/vgname

Regards,
Abhijit

[Bharat Katkar]

Hi Jay,

If "fsck -o full " is not giving you any errors i doubt if the filesystem has really gone bad. Something is definitely missing here.

Regards,

[Robert-Jan Goossens_1]

Jay,

did you check if all your mountpoints are on your system. The "no such device found" could also be refering to the mountpoint.

example

/app/oracle
/app/oracle/admin
/app/oracle/appl

if /app/oracle is not mounted on my system the other two will not mount either.

HTH,
Robert-Jan

[Jayasuntar]

Hi all,

I tried mounting it diff directory.. Still same error.

Lv minor number is unique.

fsck -o full -y - Gievn some error that lost+found not found, ilink coludnt reconnect.

any help please.. I dont have backup also..

Jay

[Devender Khatana]

Hi Again,

There seems some problem with the file system structure. What does fsck say now ?

What about running a fsck with alternate super block option (-b)?

There seems very remote possibility of recovering the data although.

HTH,
Devender

[Jayasuntar]

Hi,

Now fsck says no error.

But I am getting same error.

How to find out the alternate super block location?.

Regards

Jay

[Jayasuntar]

Hi all,

I am getting error while running fsck -o full -y that after phase2, Waning:- Lost+found directory not found for the fileset 999.

But finally it says.. Fs is clean. But while try mount I am getting error that no such device found.

Jay

[melvyn burnard · Accepted solution]

Well this sounds terminal I am afraid.
You may be forced to newfs and recover data.

One question here is what OS version is this?
I vaguely recall a symptom such as you are seeing that was fixed by a patch, but I think it was for HP-UX 10.20

[Thayanidhi]

Hi,
May be intent log is damaged.
Try

fsck -F vxfs -o full,nolog -y

Regds
TT

[Jov]

Hi Jay,

Does fsck -o full -n on the FS give you any errors?


Jov

[Jayasuntar]

Hi all,

Found FS corrupted, newfs created. Now ok.

Regards

Jay