Date: Sun, 18 Dec 2005 16:18:23 +0100 From: =?ISO-8859-15?Q?Christian_Gr=FCndemann?= <mailing@libet.de> To: freebsd-stable@freebsd.org Subject: DLT Tape Read errors on aac0 Message-ID: <43A57DBF.6050404@libet.de>
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Hi, I am using an Adaptec SCSI RAID 2120S Card with 5 SCSI Seagate drives as a RAID-5 without any probelms for almost two years now. Last week I attached to the aac0 controller a Tandberg DLT Drive QUANTUM DLT VS160 2500 Removable Sequential Access SCSI-2 device for large backup purposes. We decided to use dump/restore for our backup strategy but unfortunately we can only make backups and no restores. E.g dumping a filesystem works great: root@hercules ~ dump -0aLf /dev/sa0 /var DUMP: Date of this level 0 dump: Tue Dec 20 15:44:05 2005 DUMP: Date of last level 0 dump: the epoch DUMP: Dumping snapshot of /dev/aacd0s1f (/var) to /dev/sa0 DUMP: mapping (Pass I) [regular files] DUMP: mapping (Pass II) [directories] DUMP: estimated 63220 tape blocks. DUMP: dumping (Pass III) [directories] DUMP: dumping (Pass IV) [regular files] DUMP: DUMP: 64341 tape blocks on 1 volume DUMP: finished in 15 seconds, throughput 4289 KBytes/sec DUMP: Closing /dev/sa0 DUMP: DUMP IS DONE root@hercules ~ I guess the backup has been successfully finished. But when I try a access the backup ether via the interactive console or by trying to extract the data directly I get the follwing errors in /var/log/messages root@hercules /var restore -i -f /dev/sa0 tape read error: Input/output error Dec 20 15:49:22 hercules kernel: (sa0:aacp0:0:5:0): READ(06). CDB: 8 0 0 80 0 0 Dec 20 15:49:22 hercules kernel: (sa0:aacp0:0:5:0): NO SENSE ILI (length mismatch): 22528 csi:e0,40,0,20 asc:0,0 Dec 20 15:49:22 hercules kernel: (sa0:aacp0:0:5:0): No additional sense information Sometimes I often get some Timeouts (only using restore). Dec 19 11:34:27 hercules kernel: aac0: COMMAND 0xc1fdf750 TIMEOUT AFTER 51 SECONDS Kernel config: ------------------------- # SCSI peripherals device scbus # SCSI bus (required for SCSI) device ch # SCSI media changers device da # Direct Access (disks) device sa # Sequential Access (tape etc) device cd # CD device pass # Passthrough device (direct SCSI access) device ses # SCSI Environmental Services (and SAF-TE) # RAID controllers device aac # Adaptec FSA RAID device aacp # SCSI passthrough for aac (requires CAM) ------------------------- dmesg (cutted): ------------------ hercules kernel: CPU: Intel(R) Xeon(TM) CPU 2.80GHz (2399.33-MHz 686-class CPU) hercules kernel: FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs hercules kernel: cpu0 (BSP): APIC ID: 0 hercules kernel: cpu1 (AP): APIC ID: 1 hercules kernel: cpu2 (AP): APIC ID: 6 hercules kernel: cpu3 (AP): APIC ID: 7 aac0: <Adaptec SCSI RAID 2120S> mem 0xd0000000-0xd3ffffff irq 52 at device 2.0 on pci4 aac0: [FAST] aac0: Unknown processor 100MHz, 48MB cache memory, optional battery not installed aac0: Kernel 4.1-0, Build 7244, S/N bd10c2 aac0: Supported Options=11d7e<CLUSTERS,WCACHE,DATA64,HOSTTIME,RAID50,WINDOW4GB,SOFTERR,SGMAP64,ALARM,NONDASD> aacp0: <SCSI Passthrough Bus> on aac0 acpi_cpu: throttling enabled, 8 steps (100% to 12.5%), currently 100.0% (probe5:aacp0:0:5:0): TEST UNIT READY. CDB: 0 0 0 0 0 0 (probe5:aacp0:0:5:0): NOT READY csi:e0,40,0,1c asc:4,1 (probe5:aacp0:0:5:0): Logical unit is in process of becoming ready sa0 at aacp0 bus 0 target 5 lun 0 sa0: <QUANTUM DLT VS160 2500> Removable Sequential Access SCSI-2 device sa0: 160.000MB/s transfers (80.000MHz, offset 96, 16bit) ---------------------- Does anybody maybe have an idea why I can use dump but not restore ? This doesn't make sense to me. And I should mention that "tar" works great! I can write and read from the tape, even with filemarks. Thanks for your help! Christian
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