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Linux Configuration Procedures
Dell™ PowerVault™
This chapter describes how to configure various Linux systems to recognize and obtain optimal performance from the Dell PowerVault
Configuring Linux Environments
This subsection provides procedures for configuring Linux operating system environments.
Finding Existing SAS Controllers and Devices
Use the following command to list the current SAS controllers:
dmesg grep SAS
This command produces output similar to:
SCSI0:LSI Logic SAS based MegaRAID driver
Use the following command to find existing SCSI devices:
cat /proc/scsi/scsi
This command produces output similar to:
Host: scsi0 Channel: 0 Id:6 Lun:00
Vendor: Dell Model: ULTRIUM 4 Rev: 1897
Type:
Use the output of these two commands to determine which SCSI target ID numbers are available. In this example, a tape drive is attached at target ID 6.
The widely available distributions of Linux automatically install the proper SCSI and tape device drivers. If you executed the cat command to find existing SCSI devices, you have ensured that the SCSI driver for your controller is installed.
Use the following command to view currently loaded modules:
execute
Verify that one of the entries is st.
Use the following command to view the st device number for your attached tape drive:
dmesg grep tape
This command produces output similar to:
Detected SCSI tape st0 and scsi0 . . .
Configuring the Linux Environment
Procedure
1.Use the mt command option to configure the Linux environment.
2.Use the stsetoptions command from within the mt command to set up a default configuration.
See the man page for mt for details.
NOTICE: Do not use the erase command. Do not use commands that partition the tape. Partitioning is not supported in the LTO format.
NOTE: For commands that use density and tape size settings, the tape density is 343,408 bpi and the tape length is 2690 feet. For commands that use a blocking factor, use a factor of 128.
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