scsimgr_estape.7 (2010 09)

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scsimgr_estape(7) scsimgr_estape(7)

tion

8 = Device supports Reserve/Release

Tape Density to write.

Default: 0x7f

0xFFFFFFFF = Best Density

0x00 = Let the device choose the density

0x7f = Do not modify tape density.

other = a valid density code for the Mode

Parameter Block Descriptor.

best_density RW uint32

Compression Algorithm to use

Default: 0

0x00 = Compression Disabled

0xDEF = default for drive

other = a valid compression value for the

Data Compression Mode Page (0x0F).

best_compression RW uint32

clean_req_

sns_info

The Key/Code/Qualiﬁer representing

"Cleaning Required"

Default: 0xffffffff

RW uint32

I/O Load Balancing and Multi-Pathing Policies

The estape driver uses path_lockdown

method as load balancing policy and has minimal support for

multi-pathing.

When the device is ﬁrst opened after a system boot, a path is chosen and will remain ﬁxed. If the path

fails, the new path will be picked on next open only. But with the support of the

lpt_to_lockdown

attribute beginning in the HP-UX 11i v3 March 2009 Update, it lets users select a lunpath among avail-

able lunpaths to the device, which will be locked down and I/O’s will be issued on the newly selected lun-

path. Please refer scsimgr attribute table in scsimgr(1M) for more information on the

lpt_to_lockdown attribute.

EXAMPLES

To display

scsimgr estape plug-in general help and supported commands:

scsimgr -h -d estape

To get estape driver global statistics:

scsimgr get_stat -d estape

To clear estape driver global statistics:

scsimgr clear_stat -d estape

To get estape driver global status information:

scsimgr get_info -d estape

To display information about estape driver global attributes:

scsimgr get_attr -d estape

AUTHOR

SCSI class driver estape plug-in for scsimgr was developed by Hewlett Packard Company.