I sent the wrong output in the last email.... Here's the correct 'tapeinfo':
Product Type: Tape Drive
Vendor ID: 'IBM '
Product ID: 'ULTRIUM-HH7 '
Revision: 'G9Q1'
Attached Changer API: No
SerialNumber: '123456789A'
MinBlock: 1
MaxBlock: 8388608
SCSI ID: 4
SCSI LUN: 0
Ready: yes
BufferedMode: yes
Medium Type: 0x78
Density Code: 0x5c
BlockSize: 32768
DataCompEnabled: no
DataCompCapable: yes
DataDeCompEnabled: yes
CompType: 0xff
DeCompType: 0xff
BOP: yes
Block Position: 0
Partition 0 Remaining Kbytes: -1
Partition 0 Size in Kbytes: -1
ActivePartition: 0
EarlyWarningSize: 0
NumPartitions: 0
MaxPartitions: 3
Further, here's my '/etc/stinit.def':
manufacturer="IBM" model = "ULTRIUM-HH7" {
scsi2logical=1
can-bsr=1
auto-lock=1
two-fms=0
drive-buffering=1
buffer-writes
read-ahead=1
async-writes=1
can-partitions=1
fast-mteom=0
sysv=1
timeout=180
long-timeout=14400
mode1 blocksize=32768 compression=1
mode2 blocksize=32768 compression=0
mode3 disabled=1
mode4 disabled=1
Sorry, about that!
On 2018-01-11 02:43 PM, Luc Lalonde wrote:
Hello Folks,
I'm wondering if there's a bug with 'Amtapetype' (version 3.5.1).
We're migrating from LTO5 to LTO7 and I'm getting strange results when
I run 'amtapetype'.
Here's what I get after roughly 35 hours:
define tapetype LTO7 {
comment "Created by amtapetype; compression enabled"
length 5874932832 kbytes
filemark 1813 kbytes
speed 118310 kps
blocksize 32 kbytes
}
Why is it saying that it can write roughly 6Tb if it's supposedly
hardware compressed? LTO7 is supposed to give a compression ration of
2.5 to 1.
I've disabled compression... Here's the ouptut of 'tapeinfo:
[root@ulysses ~]# tapeinfo -f /dev/sg12
Product Type: Tape Drive
Vendor ID: 'IBM '
Product ID: 'ULTRIUM-HH7 '
Revision: 'G9Q1'
Attached Changer API: No
SerialNumber: '123456789A'
MinBlock: 1
MaxBlock: 8388608
SCSI ID: 4
SCSI LUN: 0
Ready: yes
BufferedMode: yes
Medium Type: 0x78
Density Code: 0x5c
BlockSize: 32768
DataCompEnabled: yes
DataCompCapable: yes
DataDeCompEnabled: yes
CompType: 0xff
DeCompType: 0xff
Block Position: 2
Partition 0 Remaining Kbytes: -1
Partition 0 Size in Kbytes: -1
ActivePartition: 0
EarlyWarningSize: 0
NumPartitions: 0
MaxPartitions: 3
Am I missing something?
Thanks!|
--
Luc Lalonde, analyste
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École polytechnique de MTL
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