[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now


Bacula backup write error

Posted on 2006-03-30
Medium Priority
Last Modified: 2012-05-05
Hi Guys,

I am trying to implement bacula backup and i am having very big problems.I am having 10 client for my backup server it will run backup 4 or 5 client fine and then my volume status is changing to full because of the following error

30-Mar 15:38 backup01-sd: NightlySave1.2006-03-30_15.21.00 Error: block.c:552 Write error at 5:6714 on device

/dev/nst0. ERR=Input/output error.
30-Mar 15:38 backup01-sd: NightlySave1.2006-03-30_15.21.00 Error: Error writing final EOF to tape. This tape may

not be readable.
dev.c:1213 ioctl MTWEOF error on /dev/nst0. ERR=Input/output error.

can some one help me why my backup is not completting and the solution for this problem

i am running dell power vault 114T tape drive with debian sarge kernel version 2.4.27
Question by:gg234
  • 3
  • 2
LVL 16

Expert Comment

ID: 16334680
Ok, this is a changer, right?  Is it bombing right when one tape would be full?  

I think what's happening is that the bacula daemon doesn't have rights to send the hardware command to the changer to make it change the tape.  The dirty way to fix this is to have the bacula daemon run as root, but a better way would be to create a user for the daemon and give it the rights it needs.  

I'm sure you've been here: http://www.bacula.org/rel-manual/Autochanger_Support.html#SECTION000291000000000000000

here's another good one:  http://www.freebsddiary.org/digital-tl891.php

Good Luck, Travis
LVL 22

Accepted Solution

dovidmichel earned 1000 total points
ID: 16334870
Check for a firmware update for the tape drive.
Most of the time Dell uses ADIC libraries and IBM drives, and IBM drives work best with IBM tapes. Try using an IBM tape.
Try retentioning the tapes.
Also will not hurt to try loading a cleaning tape.
Configure it so that the same bus is not used for both tape and disk.
LVL 16

Assisted Solution

gurutc earned 1000 total points
ID: 16334948
davidmichel's points were good.  One thing I've run into is sometimes the latest firmware updates can be the problem if the support files in projects like Bacula haven't been updated yet.  Make sure your firmware is not too new for Bacula support.

Get quick recovery of individual SharePoint items

Free tool – Veeam Explorer for Microsoft SharePoint, enables fast, easy restores of SharePoint sites, documents, libraries and lists — all with no agents to manage and no additional licenses to buy.

LVL 10

Author Comment

ID: 16336823
this is not auto charger and i am using DLT tapes and my kernel is giving following errors

kernel: st0: Error with sense data: Current st09:00: sense key Unit Attention  
 kernel: Additional sense indicates Not ready to ready change,medium may have changed  
 kernel: st0: Error with sense data: Current st09:00: sense key Not Ready  
 kernel: Additional sense indicates Logical unit is in process of becoming ready  
 kernel: st0: Error with sense data: Current st09:00: sense key Not Ready  
LVL 16

Expert Comment

ID: 16336866
hmm, 114t comes up as a changer when i look at dell.  you sure?  if it has the robot arm in it you need to load the autochanger stuff for bacula.

- travis
LVL 22

Expert Comment

ID: 16337074
Unit Attention is usually just a normal informational type message. Any time a drive is powered on, a tape is loaded, a tape is ejected a Unit Attention will happen. It is a problem when the SCSI bus is hung and a Unit Attention is sent to reset the bus and regain communication with the device.

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Is your phone running out of space to hold pictures?  This article will show you quick tips on how to solve this problem.
Windows Server 2003 introduced persistent Volume Shadow Copies and made 2003 a must-do upgrade.  Since then, it's been a must-implement feature for all servers doing any kind of file sharing.
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…
Despite its rising prevalence in the business world, "the cloud" is still misunderstood. Some companies still believe common misconceptions about lack of security in cloud solutions and many misuses of cloud storage options still occur every day. …
Suggested Courses

873 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question