NIM NFS file system cannot unmount


 
Thread Tools Search this Thread
Operating Systems AIX NIM NFS file system cannot unmount
# 1  
Old 12-20-2012
NIM NFS file system cannot unmount

Hello,

I have a script on my NIM Master that runs with crons and performs mksysb backups of all NIM Clients once a week.
There is a problem with one of the clients as it stucks and never finishes the mksysb backups.
I tried to unmount the NFS file system created by the NIM in order to perform the mksysb but i cannot do it.
I killed all processes from NIM Master and client about the nim operation but i still cannot unmount the NFS.
I even tried umount -f but i still get the message below:
Code:
NFS server <NIM> not responding still trying

i don't know what else to try. I searched through smitty the nfs filesystems for this server but it doesn't appear anywhere. I cannot understand why it still try to mount it.

Any ideas on that?
Thank you

Regards,
Stavros
# 2  
Old 12-20-2012
I am guessing you are running a
Code:
nim -o define -t mksysb ...

command to perform these backups and it is the client that is not able to unmount.

To debug - you could start with using rpcinfo -p <NIM> | grep nfs to see if the nfs demons are recognized.

The other question I would have is whethr this client has more than one IP address and/or nim route back to the nim server. If it is, the way I debugged the interface being used by default is the telnet/ssh to the nim server (use the <NIM> name as hostname, and then after login, use the command "who" to show which IP address/hostname is recognized as originating IP address.

Compare these values to what a "working" client returns.

My gut feeling, if I read corrently it is the same client that fails, is that there is a configuration difference between this client and the one that succeed.
# 3  
Old 12-20-2012
Code:
nim -o define -t mksysb

is the one that i use to perform the mksysb backups in my script
you are right i use more than 1 ip addresses on this client. i compared
characteristics of the client throught smit nim and i noticed that on the
field Network Adapter Hardware Address the value is set to 0 and also
in the field Network Adapter Logical Device Name the value is set to ent.
I tried to correct these values but i get the error
Code:
0042-023 m_chmac: "sem_nim_network e_rea " is not a valid NIM interface stanza

i don't know why i get this error as i have the same values in the
respective field of the "correct" client
# 4  
Old 12-20-2012
When we had physical servers, we had the same error and it ended up being caused by our switch being configured to 1000 full and our adapter was set to auto/auto. Once we changed our adapter settings, the error went away.

Also, look in your rc.net and rc.tcpip for any special customizations. We had one server with an "/usr/sbin/ifconfig..." line in it that should not have been there.
# 5  
Old 12-20-2012
A "simple" solution, at least to try, is to delete the machine definition in the nim server, then on the client, use "smitty nim" to recreate the client.
If the nim master is missing a network resource, that is, thinks it is, you should get a message, and/or nim master will make one for you.

When you telnet/ssh to the nim master IP address, does "who" give you the expected hostname/IP address for the client?
# 6  
Old 12-21-2012
sorry i didn't mention that before. yes i tried to ssh to NIM from the client and did who and i get the correct output.
in the meantime i already performed a reboot on the client just to clear it from the NFS.
i guess it would be a good idea to re-configure the server as NIM client.
it is strange though as it worked before and i experience this problem just this week.
but i think this is what i am going to do.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. AIX

Unable to mount previously-working NFS share from NIM to LPAR

Right, now that I've finally worked out this website, I'll ask my question! I am having an absolute nightmare with NFS on AIX. I have used it many times, and I know what I'm doing, however I cannot fathom what is going on here. I have 2 LPARs, sitting on the same physical host. They are... (12 Replies)
Discussion started by: tmooredba
12 Replies

2. AIX

Write once on NFS file system

Hello Guru's We are trying to save some data for 10 -15 yrs. so we created a NFS share file system and mounted on AIX 5.3 servers, keeping in mind that we might need to replace the expired disk/bad disk every 2 yrs or 4 yrs. Now we are trying to solve. How to protect it from getting deleted... (6 Replies)
Discussion started by: Beginner123
6 Replies

3. UNIX for Dummies Questions & Answers

What happens if i unmount local file system when is mounted to a different server?

Hi, as title says what happens if i unmount local file system when is mounted to a diffrent server ? (2 Replies)
Discussion started by: galuzan
2 Replies

4. AIX

For NIM: NFS file system problem

hello, i am trying to export a file system so that i can mount it on NIM server and make mksysb backup of the server on that fs. i get this message: mount: 1831-011 access denied for s_semdev:/dr_s_zeus/mksysb/dr_s_zeus mount: 1831-008 giving up on: s_semdev:/dr_s_zeus/mksysb/dr_s_zeus ... (5 Replies)
Discussion started by: omonoiatis9
5 Replies

5. UNIX for Dummies Questions & Answers

How to check whether file system is local or NFS?

Hi, suppose I have file system path say /foo/bar/baz then how would I find out whether it is local file system or NFS? If it is NFS then I want to find out the host where file system is located. Thanks, Paresh (5 Replies)
Discussion started by: masaniparesh
5 Replies

6. AIX

changing values for nfs shared file system on aix

Hi, I want to change the values for shared file system in aix for that I have run the command smitty chnfsexp but I am not getting the all the values which I have seen while adding the file system while exporting example smitty chnfsexp but after selecting shared file system using F4... (3 Replies)
Discussion started by: manoj.solaris
3 Replies

7. AIX

How to export AIX File system NFS to Windows ?

Hello, Can someone please point to an easy document or steps how to export AIX file system /whatever to Windows O/S Basically Windows should see this filesystem / directory and should be able to write in this filesystem / directory Thanks (2 Replies)
Discussion started by: filosophizer
2 Replies

8. AIX

Cannot access NFS file system

I create a NFS file system. I can read this system from client, however, I cannot write anything in this folder. Why? (1 Reply)
Discussion started by: rainbow_bean
1 Replies

9. Filesystems, Disks and Memory

Is it possible to re-export a exported NFS file system?

Hi... Is it possible to re-export a exported NFS file system? If no, Why? Let me know, if any further details are required about the question. Thanks in advance Adams:) (5 Replies)
Discussion started by: Adams Nave
5 Replies

10. Linux

UNMOUNT a windows file system

Hi, I try to unmount : smbumount /mnt/directory But I receive : Could not umount /mnt/directory: Device or resource busy Any idea ? Many thanks. (4 Replies)
Discussion started by: big123456
4 Replies
Login or Register to Ask a Question