From: steve@chaos.ocean.fsu.edu (Steve Van Gorder)
Newsgroups: comp.sys.sgi
Subject: opticals and fx
Date: 21 Jul 92 20:20:37 GMT
Article-I.D.: adm.31479

More optical disk problems, this time with fx.


Can anyone help me with some problems I'm having with my optical disk
and fx.  Below is a session where I am exercising the disk in extended mode.
During the first exercise fx just hangs.  I retry I again and even though
there are apparently some errors during the exercise, fx errlog reports none
and there are no new bad blocks found. 

Sorry if this is just something basic about fx that I just don't understand.
One thing I do know ... I'm confused.

This is a 4D35 running 4.0.1 and a MaxOptix Tahati II /w Ten X OCU

Thanks for any help you can give.

Steve.


fx session follows ....


fx/exercise> st

Will stop on errors

----- please choose one (? for help, .. to quit this menu)-----
 [b]utterfly         [r]andom            [st]op_on_error     [sh]owtestpat
 [e]rrlog            [seq]uential        [set]testpat        [c]omplete
fx/exercise> c

 * * * * * W A R N I N G * * * * *
about to destroy data on disk dksc(0,5,)! ok? y
sequential pass 1: scanning [(0), (904320))
........... 10.......... 20.......... 30.......... 40.......... 50..........
60.......... 70.......... 80.......... 90.......... 100.......... 110.........
. 120.......... 130.......... 140.......... 150.......... 160.......... 170....
...... 180.......... 190.......... 200.......... 210.......... 220..........
230.......... 240.......... 250.......... 260.......... 270.......... 280.....
..... 290.......... 300.......... 310.......... 320.......... 330.......... 340
.......... 350.......... 360.dks0d5s10: Media error: No addr mark found in Data field,. Block #347122

(fx locks up and in SYSLOG we find)

Jul 20 17:49:59 chaos unix: dks0d5s10: Media error: No addr mark found in Data \field,. Block #347122

(I had to type ^C here to get any response from fx)
(I toggle off stop_on_error and try again)

----- please choose one (? for help, .. to quit this menu)-----
 [b]utterfly         [r]andom            [st]op_on_error     [sh]owtestpat
 [e]rrlog            [seq]uential        [set]testpat        [c]omplete
fx/exercise> st

Will not stop on errors

----- please choose one (? for help, .. to quit this menu)-----
 [b]utterfly         [r]andom            [st]op_on_error     [sh]owtestpat
 [e]rrlog            [seq]uential        [set]testpat        [c]omplete
fx/exercise> c

 * * * * * W A R N I N G * * * * *
about to destroy data on disk dksc(0,5,)! ok? y
sequential pass 1: scanning [(0), (904320))
........... 10.......... 20.......... 30.......... 40.......... 50..........
60.......... 70.......... 80.......... 90.......... 100.......... 110.........
. 120.......... 130.......... 140.......... 150.......... 160.......... 170....
...... 180.......... 190.......... 200.......... 210.......... 220..........
230.......... 240.......... 250.......... 260.......... 270.......... 280.....
..... 290.......... 300.......... 310.......... 320.......... 330.......... 340
.......... 350.......... 360.......... 370.......... 380.......... 390.........
. 400.......... 410.......... 420.......... 430.......... 440.......... 450....
...... 460.......... 470.......... 480.......... 490.......... 500..........
510.......... 520.......... 530.......... 540.......... 550.......... 560.....
..... 570.......... 580.......... 590.......... 600.......... 610.......... 620
.......... 630.......... 640.......... 650.......... 660.......... 670.........
. 680.......... 690.......... 700.......... 710.......... 720.......... 730....
...... 740.......... 750.......... 760.......... 770.......... 780..........
790.......... 800.......... 810.......... 820.......... 830.......... 840.....
..... 850.......... 860.......... 870.......... 880.......... 890.......... 900
.......... 910.......... 920.......... 930.........dks0d5s10: Media error: Unrecovered data block read error,. Block #902359
fx/exercise/complete: Error 0 -- Couldn't find bad block on track starting with block 901440 after 2 tries
. 940.
butterfly pass 1: scanning [(0), (904320))
......dks0d5s10: Media error: Unrecovered data block read error,. Block #902359
fx/exercise/complete: Error 0 -- Couldn't find bad block on track starting with block 901440 after 2 tries
..... 10.......... 20.......... 30.......... 40.......... 50..........
60.......... 70.......... 80.......... 90.......... 100.......... 110.........
. 120.......... 130.......... 140.......... 150.......... 160.......... 170....
...... 180.......... 190.......... 200.......... 210.......... 220..........
230.......... 240.......... 250.......... 260.......... 270.......... 280.....
..... 290.......... 300.......... 310.......... 320.......... 330.......... 340
.......... 350.......... 360.......... 370.......... 380.......... 390.........
. 400.......... 410.......... 420.......... 430.......... 440.......... 450....
...... 460.......... 470.......... 480.......... 490.......... 500..........
510.......... 520.......... 530.......... 540.......... 550.......... 560.....
..... 570.......... 580.......... 590.......... 600.......... 610.......... 620
.......... 630.......... 640.......... 650.......... 660.......... 670.........
. 680.......... 690.......... 700.......... 710.......... 720.......... 730....
...... 740.......... 750.......... 760.......... 770.......... 780..........
790.......... 800.......... 810.......... 820.......... 830.......... 840.....
..... 850.......... 860.......... 870.......... 880.......... 890.......... 900
.......... 910.......... 920.......... 930.......... 940.



----- please choose one (? for help, .. to quit this menu)-----
 [b]utterfly         [r]andom            [st]op_on_error     [sh]owtestpat
 [e]rrlog            [seq]uential        [set]testpat        [c]omplete

(now SYSLOG contains)

Jul 20 18:32:19 chaos unix: dks0d5s10: Media error: Unrecovered data block read\ error,. Block #902359
Jul 20 18:39:51 chaos unix: dks0d5s10: Media error: Unrecovered data block read\ error,. Block #902359

(but ...)


fx/exercise> e -l

----- error summary-----
(bn)  rretries(rfail) wretries/wfail
TOTAL ERR BLOCKS r0(0 hard) w0(0 hard)

------------------------------------------------------------------------
 Steve VanGorder                     Internet  steve@chaos.ocean.fsu.edu
 Dept. of Oceanography   B-169       Bitnet    gorder@fsu                
 Florida State University            Phone    (904) 644-2447             
 Tallahassee, Fl 32306               Fax      (904) 644-2581
------------------------------------------------------------------------