Hi List,

my problem seems to be that the tape rewinds during idle times.
That is during spooling to disk before writing to tape.

Two short jobs completed, third job is spooling 38 GB to disk and takes
about 1h45m for this. Then it tries to write to the tape.

Debugging output from storage demon
--------------------------------------------------
epistaxis-sd: mem_pool.c:111 sm_get_pool_memory reuse 80ab508 to 
../lib/berrno.h:61
epistaxis-sd: mem_pool.c:221 free_pool_memory 80ab508 pool=4 from 
../lib/berrno.h:66
epistaxis-sd: message.c:1005 Enter Jmsg type=4
epistaxis-sd: message.c:573 Enter dispatch_msg type=4 msg=epistaxis-sd: 
Troglodyte.2005-08-08_12.46.14 Error: Error writing final EOF to tape. This 
tape may not be readable.
dev.c:1213 ioctl MTWEOF error on /dev/scsi/nsth1-c800c0i6l0. ERR=Input/output 
error.

epistaxis-sd: message.c:731 DIRECTOR for following msg: epistaxis-sd: 
Troglodyte.2005-08-08_12.46.14 Error: Error writing final EOF to tape. This 
tape may not be readable.
dev.c:1213 ioctl MTWEOF error on /dev/scsi/nsth1-c800c0i6l0. ERR=Input/output 
error.
epistaxis-sd: block.c:680 WEOF error.
epistaxis-sd: askdir.c:229 Update cat VolFiles=3
epistaxis-sd: askdir.c:247 update_volume_info(): CatReq 
Job=Troglodyte.2005-08-08_12.46.14 UpdateMedia VolName=FULL_03 VolJobs=0 
VolFiles=3 VolBlocks=61999 VolBytes=3999679298 VolMounts=3 VolErrors=3 
VolWrites=1178726 MaxVolBytes=0 EndTime=1123504567 VolStatus=Append Slot=6 
relabel=0 InChanger=1 VolReadTime=0 VolWriteTime=0
epistaxis-sd: askdir.c:91 Get vol info=1000 OK VolName=FULL_03 VolJobs=0 
VolFiles=3 VolBlocks=61999 VolBytes=3999679298 VolMounts=3 VolErrors=3 
VolWrites=1178726 MaxVolBytes=0 VolCapacityBytes=0 VolStatus=Append Slot=6 
MaxVolJobs=0 MaxVolFiles=0 InChanger=1 VolReadTime=0 VolWriteTime=0 EndFile=3 
EndBlock=15499
epistaxis-sd: askdir.c:112 do_reqest_vol_info got slot=6 Volume=FULL_03
epistaxis-sd: askdir.c:255 get_volume_info(): 1000 OK VolName=FULL_03 VolJobs=0 
VolFiles=3 VolBlocks=61999 VolBytes=3999679298 VolMounts=3 VolErrors=3 
VolWrites=1178726 MaxVolBytes=0 VolCapacityBytes=0 VolStatus=Append Slot=6 
MaxVolJobs=0 MaxVolFiles=0 InChanger=1 VolReadTime=0 VolWriteTime=0 EndFile=3 
EndBlock=15499
epistaxis-sd: block.c:686 dir_update_volume_info terminate writing -- ERROR
epistaxis-sd: block.c:711 Leave terminate_writing_volume -- ERROR
 EOD EOF Bacula status: file=3 block=15500
 Device status: ONLINE IM_REP_EN file=3 block=15500
epistaxis-sd: device.c:97 ======= Got EOD ========
epistaxis-sd: device.c:414 block set 3 from device.c:99
epistaxis-sd: device.c:400 unlock from device.c:101
epistaxis-sd: device.c:105 Call update_vol_info Stat=Full Vol=FULL_03
epistaxis-sd: askdir.c:229 Update cat VolFiles=3
----------------------------------------------------------

Bacula label on this tape is overwritten with EOF and destroyed. So I think
that somehow the tape was rewound to the start.

Bacula is 1.36.3 and uses the tape exclusively. System is SuSE 9.0 with 
Kernel-2.4.21-286.

Changer is:
----------------------------------------------------------
scsi1 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
        <Adaptec 2940 Ultra SCSI adapter>
        aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs

  Vendor: SEAGATE   Model: LTO LDR CLL1600   Rev: S17r
  Type:   Medium Changer                     ANSI SCSI revision: 02
(scsi1:A:6): 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
  Vendor: SEAGATE   Model: ULTRIUM06242-XXX  Rev: 1542
  Type:   Sequential-Access                  ANSI SCSI revision: 03
----------------------------------------------------------

Any suggestions where to look for the culprit?
Anymore Info needed?

CU Sven


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