Question about the Format Status log page

Penokie, George George.Penokie at lsi.com
Mon Jun 3 12:01:04 PDT 2013


Formatted message: <a href="http://www.t10.org/cgi-bin/ac.pl?t=r&f=r1306030_f.htm">HTML-formatted message</a>

Gerry,
That field is a count of the total number of logical block that have been
reassigned from the end of the last format to the time when the log page is
written. When a format completes this field is set to zero, there is no math
involved. This is clearly stated in the description of the total new blocks
reassigned field as follows:
The TOTAL NEW BLOCKS REASSIGNED field contains a count of the total number of
logical blocks that have been reassigned since the completion of the most
recent successful format operation
Bye for now,
George Penokie
LSI Corporation
3033 41 St NW
Rochester , MN 55901
507-328-9017
george.penokie at lsi.com
From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of Gerry Houlder
Sent: Tuesday, May 21, 2013 3:21 PM
To: T10 Reflector
Subject: Question about the Format Status log page
The Format Status log page (in SBC-3) has a parameter called Total New Block
Reassigned. It appears that this should be calculated by:
(1) remembering the Total Blocks Reassigned During Format parameter from the
previous successful format operation and
(2) subtracting it from the Total Blocks Reassigned During Format parameter
for the current format operation.
This could result in a negative number (e.g., the current format operation
deleted the glist and none of those locations became certification defects).
These are binary format list parameters. Are binary format list parameters
allows to contain negative numbers? if so, should it be 1's complement or 2's
complement format? Or should negative numbers be reported as zero?



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