Problem with Intent log version 6 on 11.00 and Intent log version 9 on 11.11

[Elif Gius]

Hi,
I've got a system running 11.00 with JFS 3 intent log version 6 and another system running 11.11 with JFS 4 intent log version 9.

We use BCVs. So daily we do a export from some VGs of the 11.00 system and importing them on the 11.11 system.
Now my problem starts. On the 11.11 system JFS cannot read the intent log of the 11.00 lvols.
So a full fsckk is needed and the intent log is resetted.
So what I want to know is: is the filesystem on the lvol really consistent, because I resetted the intent log. Is it possible, that I have some corrupt files.

Thanks in Advance for your help.
Bye
Elif

[Stuart Abramson_2 · Accepted solution]

I had exactly this same problem, only in reverse.

What you have to do is upgrade your JFS on the 11.0 system to use JFS 3.3, which uses the verion 9 log. See product name below in "swlist".

We now split every day with no problem.

1. JFS has versions.

2. echo "8192 B; p S" | fsdb -F vxfs /dev/05vg89/lvol01 | grep log_version

log_version 9 logstart 0 logend 0

3. If you split a BCV and present it from an old server to a new server,
it will FAIL an:

fsck -F vxfs /dev/vgxx/lvolYY

with $? = 12

You will have to do an:

fsck -y -F vxfs /dev/vgxx/lvolYY

4. If you split from a new system to an old system, you probably don't have
a chance!

5. Check the swlists:

# swlist | grep -i jfs
B3929BA B.11.00 HP OnLineJFS (Advanced VxFS)
B3929CA B.03.03 JFS 3.3 Filesystem For 11.00

6. Also, check version with:

# fstyp -v /dev/vgxx/lvoly|grep version


saroot@acshps05:/home/saroot/unix_doc/11#

[Stuart Abramson_2]

Ignore my #4 above, about "you don't have a change". The log formats are the same.

Stuart

[Stuart Abramson_2]

Ignore my #4 above, about "you don't have a chance". The log formats are the same.

Stuart