topic Re: problem with mounting a file system in Operating System - HP-UX

problem with mounting a file system

Vipin Singhal — Fri, 09 Dec 2005 05:03:48 GMT

today i think -my file system got unmount.
when i trying with #bdf, it shows this error:

bdf: /vipin I/O error

till yesterday , the status was:

#bdf
/dev/vg5/vipin 3584000 2065376 1423717 59% /vipin

Please suggest what to do?
thanks
vipin

Re: problem with mounting a file system

Devender Khatana — Fri, 09 Dec 2005 05:07:52 GMT

Hi,

It has not got unmounted instead it has got some corruption.

What is the output of

#lvdisplay -v /dev/vg05/vipin

Was something new done on system like adding/removing LUNs, Extending/Reducing File System?
If yes then it is the result of the same probably otherwise generally it should not happen by itself.

What happen if you unmount and do a fsck on it.

HTH,
Devender

Re: problem with mounting a file system

Domenico_5 — Fri, 09 Dec 2005 05:08:01 GMT

hi Vipin

but vg5 is active if you run vgdisplay vg05 what can you see?

Re: problem with mounting a file system

Arunvijai_4 — Fri, 09 Dec 2005 05:08:58 GMT

Can you run #lvdisplay on your volume to see the results ? Is it a device connected to a SAN and got disconnected elsewhere ?

-Arun

Re: problem with mounting a file system

Vipin Singhal — Fri, 09 Dec 2005 05:14:26 GMT

# lvdisplay /dev/vg5/vipin
--- Logical volumes ---
LV Name /dev/vg5/vipin
VG Name /dev/vg5
LV Permission read/write
LV Status available/syncd
Mirror copies 0
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 31000
Current LE 7750
Allocated PE 7750
Stripes 0
Stripe Size (Kbytes) 0
Bad block on
Allocation strict
IO Timeout (Seconds) default

#vgdisplay -v /dev/vg5 | more
--- Volume groups ---
VG Name /dev/vg5
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 10
Open LV 10
Max PV 16
Cur PV 2
Act PV 2
Max PE per PV 9727
VGDA 4
PE Size (Mbytes) 4
Total PE 19452
Alloc PE 16625
Free PE 2827
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

--- Logical volumes ---
LV Name /dev/vg5/vipin
LV Status available/syncd
LV Size (Mbytes) 31000
Current LE 7750
Allocated PE 7750
Used PV 1

Re: problem with mounting a file system

Vipin Singhal — Fri, 09 Dec 2005 05:17:54 GMT

# cd /
# ll
# ll
./vipin not found

total 18
.
.
.
.
.

Re: problem with mounting a file system

Joseph Loo — Fri, 09 Dec 2005 05:20:22 GMT

hi,

could u mount it again:

# mount /dev/vg5/vipin /vipin

also, u mean bdf also give IO error for that particular file system, /vipin

regards.

Re: problem with mounting a file system

Vipin Singhal — Fri, 09 Dec 2005 05:21:35 GMT

i have created a more new LV under this VG yesterday

Please suggest what to do?

Re: problem with mounting a file system

Devender Khatana — Fri, 09 Dec 2005 05:22:29 GMT

Hi,

Try
#umount /vipin

And

#mount /devvg5/vipin /vipin

If it reports error then try

#fsck -y /dev/vg5/vipin

Now Again

#mount /devvg5/vipin /vipin

HTH,
Devender

Re: problem with mounting a file system

Vipin Singhal — Fri, 09 Dec 2005 05:24:23 GMT

# mount -F vxfs /dev/vg5/vipin /vipin
mount: /vipin: I/O error

Re: problem with mounting a file system

Vipin Singhal — Fri, 09 Dec 2005 05:24:42 GMT

# mount -F vxfs /dev/vg5/vipin /vipin
mount: /vipin: I/O error

should i run fsck

Re: problem with mounting a file system

Arunvijai_4 — Fri, 09 Dec 2005 05:25:54 GMT

Run #fsck /dev/vg5/vipin

-Arun

Re: problem with mounting a file system

Vipin Singhal — Fri, 09 Dec 2005 05:29:25 GMT

# umount /vipin
# mount -F vxfs /dev/vg5/vipin /vipin
vxfs mount: read of super-block on /dev/vg5/vipin failed: I/O error

# fsck -y /dev/vg5/vipin
vxfs fsck: read of super-block on /dev/vg5/vipin failed: I/O error
file system check failure, aborting ...

Please suggest

Re: problem with mounting a file system

Sivakumar TS — Fri, 09 Dec 2005 05:30:20 GMT

Dear Vipin,

# lvdisplay -v /dev/vg5/vipin

execute with -v option to get the full info. Check for any stale extents.

If NO,

then run fsck and mount it.

It will work !

With Regards,

Siva.

Re: problem with mounting a file system

MarkSyder — Fri, 09 Dec 2005 05:32:00 GMT

If the suggestions you've been given so far don't resolve the fault I think we need more information about the new lvol you created yesterday.

Try:

strings /etc/mnttab|pg

and post the result.

Mark Syder (like the drink but spelt different)

Re: problem with mounting a file system

Devender Khatana — Fri, 09 Dec 2005 05:39:37 GMT

Hi,

I think there has been some corruption to the file system. You could try recreating the file system again using newfs.

Also a rare hit would be that your file system is not Vxfs and is HFS. Is that the case?

HTH,
Devender

Re: problem with mounting a file system

Vipin Singhal — Fri, 09 Dec 2005 05:43:25 GMT

# strings /etc/mnttab | pg
/dev/vg5/vipin /vipin vxfs ioerror=mwdisable,delaylog,dev=402d0001 0 0 1132152766
/dev/vg5/vipin_new /vipin_new vxfs ioerror=mwdisable,delaylog,dev=402d000a 0 0 1134067336

Re: problem with mounting a file system

Vipin Singhal — Fri, 09 Dec 2005 05:46:22 GMT

i cannt recreate the LV, beacuse there are so many data in that LV

Re: problem with mounting a file system

MarkSyder — Fri, 09 Dec 2005 05:51:04 GMT

I think Devender's probably right about the filesystem becoming corrupt. Note that he didn't say re-create the lvol; he said re-create the fs.

Mark

Re: problem with mounting a file system

Vipin Singhal — Fri, 09 Dec 2005 05:59:43 GMT

if i re-create the FS by using these commands:
#newfs -F vxfs -o largefiles /dev/vg5/rvipin
# mount -F vxfs /dev/vg5/vipin vipin

it will losse my data or not?