Le 20/11/2012 16:39, Tilman Schmidt a écrit :
Am 20.11.2012 17:14, schrieb Jacky Carimalo:
Le 20/11/2012 15:32, John Drescher a écrit :

      
Also you should avoid /dev/st0 and use /dev/nst0 since /dev/st0 can
cause corruption in your tapes.

But I have no choice :

bacula2-64:~/bacula/bin# lsscsi -g
[0:0:0:0]    disk    IFT      A16F-R2221       347C  /dev/sdb /dev/sg2
[0:0:1:0]    tape    HP       Ultrium 3-SCSI   G24H  /dev/st0 /dev/sg3
[0:0:1:1]    tape    HP       Ultrium 3-SCSI   G24H  /dev/st1 /dev/sg4
[0:0:1:2]    mediumx OVERLAND NEO Series       0604  /dev/sch0 /dev/sg5
[0:0:1:3]    process Over     NEO VIA FCO      2.22  - /dev/sg6
...
I think you have. Just because /dev/nst0 isn't listed by lsscsi
doesn't mean it isn't there. Look:

[ts@backup ~]$ lsscsi -g
[0:0:0:0]    cd/dvd  HL-DT-ST DVDRAM GSA-H12N  UL01  /dev/sr0   /dev/sg0
[2:0:0:0]    disk    ATA      ST3250620NS      3.AE  /dev/sda   /dev/sg1
[3:0:0:0]    disk    ATA      ST3250620NS      3.AE  /dev/sdb   /dev/sg2
[5:0:5:0]    tape    HP       Ultrium 3-SCSI   G54W  /dev/st0   /dev/sg3
[5:0:5:1]    mediumx HP       1x8 autoloader   1.50  /dev/sch0  /dev/sg4
[ts@backup ~]$ ls -l /dev/*st0*
crw-rw---- 1 root tape 9, 128 19. Okt 16:59 /dev/nst0
crw-rw---- 1 root tape 9, 224 19. Okt 16:59 /dev/nst0a
crw-rw---- 1 root tape 9, 160 19. Okt 16:59 /dev/nst0l
crw-rw---- 1 root tape 9, 192 19. Okt 16:59 /dev/nst0m
crw-rw---- 1 root tape 9,   0 19. Okt 16:59 /dev/st0
crw-rw---- 1 root tape 9,  96 19. Okt 16:59 /dev/st0a
crw-rw---- 1 root tape 9,  32 19. Okt 16:59 /dev/st0l
crw-rw---- 1 root tape 9,  64 19. Okt 16:59 /dev/st0m



So, I used as you well indicates : /dev/nst0 and /dev/nst1.

Autochanger {
  Name = OVL_LTO-3
  Device = OVL_LTO-3_Drive-1, OVL_LTO-3_Drive-2
  Changer Device = /dev/changerovllto3
  Changer Command = "/root/bacula/bin/mtx-changer %c %o %S %a %d"
}

Device {
  Name = OVL_LTO-3_Drive-1
  Drive Index = 0
  Media Type = LTO-3
  AutoChanger = yes
  Archive Device = /dev/nst1
  AutomaticMount = yes;               # when device opened, read it
  AlwaysOpen = yes;
  LabelMedia = yes;
  RandomAccess = yes;
  Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
}

Device {
  Name = OVL_LTO-3_Drive-2
  Drive Index = 1
  Media Type = LTO-3
  AutoChanger = yes
  Archive Device = /dev/nst0
  AutomaticMount = yes;               # when device opened, read it
  AlwaysOpen = no;
   LabelMedia = yes;
  RandomAccess = yes;
  Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
}

-----------------------------------------------------------------------------------------------
But there are still errors :

dmesg :
Nov 22 12:33:22 singleton.u06.univ-nantes.prive kernel: [72917.185264] lpfc 0000:08:00.0: 0:(0):0713 SCSI layer issued Device Reset (1, 1) return x2002
Nov 22 12:33:22 singleton.u06.univ-nantes.prive kernel: [72917.190481] st1: Sense Key : Unit Attention [current]
Nov 22 12:33:22 singleton.u06.univ-nantes.prive kernel: [72917.190487] st1: Add. Sense: Bus device reset function occurred
...
-----------------------------------------------------------------------------------------------

with errors in bacula job :
2012-11-22 12:33:22 bacula.u11.univ-nantes.prive-
Error: block.c:590 Write error at 44:14976 on device "OVL_LTO-3_Drive-1" (/dev/nst1). ERR=Input/output error.
Error: Error writing final EOF to tape. This Volume may not be readable.
dev.c:1566 ioctl MTWEOF error on "OVL_LTO-3_Drive-1" (/dev/nst1). ERR=Input/output error.
...
-----------------------------------------------------------------------------------------------

I will try cleaning procedures as last solution for me ...

Thanks for your contributions.
Jacky