File Read Failure - Error Code 13- Backup over WAN link

[Rajan_Iyer]

Hi,

Kindly note that I am facing the issue of Error-13 File read failure when performing backup over WAN link with the speed of 2500 KBPS for large size.

In my case scenario is given below.

DC1 - Master Server & Media Server - [One Solaris Box]

DC2 - Media Server - { One solaris Box] & Tape Library is attached to this Server.

Backup is running from DC1 NAS Filer mounted on DC1 Master/Media server to Tape Library connected to to DC2.

Please suggest can we change any parameter to resolve the issue i.e.

Client Connect Timeout : -  300 Seconnds - [as on now]

Client Read Timeout : - 300 seconds - [as on now]

Media Server connect timeout - 30 Seconds - [As on now]

Thanks

Rajan

[RamNagalla]

hello....

does this backup job is writing any data before failing the job.....

try to enable the log for bpbkar in the client where the large file system mounted... and keep the VERBOSE = 5 in the bp.conf file... and check the log level..

and try to do the ls -R <file system> and check how much time its taking... 

if that is taking more then 300 seconds to read.. then you may need to increase the client read time out vaule....

please let us know the detail status of the failed job.. and the bpbkar log..

you may need to look for the log entry having the level <16> and <32> in the bpbkar....

[Rajan_Iyer]

Hi,

As per your suggestion I have observed the bpbkar log and found the below entry before failing the job.

02:54:24.947 [22087] <2> get_long: (1) cannot read (byte 1) from network: Connection timed out (145)
02:54:24.947 [22087] <8> bpbkar read_bpbrm_msg: WRN - Cannot read message from stdin. Errno = 145: Connection timed out
02:54:24.952 [22087] <16> bpbkar Exit: ERR - bpbkar FATAL exit status = 23: socket read failed
02:54:24.952 [22087] <4> bpbkar Exit: INF - EXIT STATUS 23: socket read failed
02:54:24.952 [22087] <2> bpbkar Exit: INF - Close of stdout complete
02:54:24.952 [22087] <4> bpbkar Exit: INF - setenv FINISHED=0

In my case ls -R [Nfs Mount Point] working fine without any delay.

I think I have to set modify some parameter at DC2 Media server , please suggest.

I think client connect time out need to change and check furhter.

Thanks

Rajan

[RamNagalla]

what is the client read and connect timeout vaules....

does it writing any date before it gives any failurs.. if yes....

try to increase the client read timeout vault.. at max.. and try the backups.. ..

if it is not writing any data... you may need to increaase the client connect timeout value also..

let me know how it works..

[Rajan_Iyer]

In the same ref. I have tried to increase the client connect timeout & client read timeout values. But still I am facing the same problem.

In the same ref. I have below queries.

1. When I am running a Backup in same DC it is running at 10 MB/Sec.

2. In case of over WAN the speed will get decreased to 2.5 MB/Sec approx. [Due to Bandwidth limitation]

In case of above backup as file size is in GB [2-5], which is giving above problem of timeout.

Please let me know is there any ideal parameters given by Netbackup which will clarify us below details.

1. Min Bandwidth for backup

2. Bandwidth Vs Data Size of backup.

Please suggest.

Thanks

Rajan