What does this mean (Failed to find matching hostname. Comparing cached IPs)

Complete message line and a few messages before and after please

1302093776: NFS: 5:  Failed to find matching hostname. Comparing cached IPs
1302093776: NFS: 5:  last message repeated 3 times
1302093776: NFS: 5:  findMatchByIP: Returning on subnet lookup for dxm_FFM and type 0x5.
1302093776: NFS: 5:  checkAccess: Netgroup names all_unix,all_FERT,all_anwend,FERT,ICTR_2,ICTR,ICT,rbg_5,rbg,ecad_lic,all_unix,all_FERT,all_anwend,FERT,ICTR_2,ICTR,ICT,rbg_5,rbg,ecad_lic,all_unix,all_FERT,all_anwend,FERT,ICTR_2,ICTR,ICT,rbg_5,rbg,ecad_lic,FERT,ICT,all_anwend,all_FERT,rbg,rbg_5,ICTR,ICTR_2,all_unix,FERT,ICT,all_anwend,all_FERT,rbg,rbg_5,ICTR,ICTR_2,all_unix,FERT,ICT,all_anwend,all_FERT,rbg,rbg_5,ICTR,ICTR_2,all_unix
1302093776: NFS: 5:  Got RW access for client 10.215.115.103
1302093776: NFS: 5:  Failed to find matching hostname. Comparing cached IPs
1302093776: NFS: 5:  findMatchByIP: Returning on subnet lookup for r_mnt and type 0x5.
1302093776: NFS: 5:  Failed to find matching hostname. Comparing cached IPs
1302093776: NFS: 5:  findMatchByIP: Returning on subnet lookup for cl_rbg and type 0x5.
1302093776: NFS: 5:  Failed to find matching hostname. Comparing cached IPs
1302093776: NFS: 5:  findMatchByIP: Returning on subnet lookup for TE and type 0x5.
1302093776: NFS: 5:  Failed to find matching hostname. Comparing cached IPs
1302093776: NFS: 5:  findMatchByIP: Returning on subnet lookup for all_FERT and type 0x5.

nsswitch.conf --> nis dns files

Helpfull will be, when a hostname or IP adress was displayed in the log.

Only see one, and this host looks fine ( Got RW access for client 10.215.115.103)

So, how can i find out what host have the problem?

Forgot the host access, this is done by netgroups (NIS). And a lot of host access this export, about 1000 hosts.

Thanks so far Sandip.

Kind regards from Germany

Andreas

Thanks Rainer,

for analyse the netstat and showmount helped me to see detailed information.

I have opend a service request.

Thanks to all involved person.

Kind regards Andi

Yes – it does look like its coming from a mount or NFS request where the data mover cannot do a reverse lookup to get the hostname from the IP to compare it with the export options

You could try working with support if there is a way to temp. increase the debug level

Or use showmount / netstat / tcpdump to see which clients are connected and then work your way up the exports options and name resolution

Rainer

Hi Andreas,

Thanks for your comments, sorry I could not reply earlier and glad that Rainer also helped you out as much possible.

See you next time ... happy posting

Sandip

Hi Andy,

can you share what the service request turned up?

Rainer