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From: sboyle@mentor.com (Sean Boyle x1542)
Newsgroups: comp.sys.apollo
Subject: Re: null physical volume label : beware in invol !
Message-ID: <1990Dec28.221222.4353@mentor.com>
Date: 28 Dec 90 22:12:22 GMT
References: <9011281730.AA04136@meto.UMD.EDU> <2185@tuvie.UUCP>
Organization: none
Lines: 88

In article <2185@tuvie.UUCP> chytil@vlsivie.tuwien.ac.at (Chytil Georg) writes:
>I've just tried to invol our new 400t's SCSI-Disk w6:0 and after choosing
>option 1 (formating virgin physical volume) pressed <RETURN> twice, be it
>by accident or through a tossing (word?) keyboard.
>
>Be warned ! While this may happen quite easy it's a proper way to make Your
>disk unrecognisable to invol, salvol, mtvol and so on : 'invalid physical
>volume label','unable to read badspot list' ... 
>
>Since I fear that our friendly HP-technician will take a time to find out
>about a remedy, I wonder if somebody else knows how to 'destuck'. I 
>assume that rwvol may offer a chance, but I'm not that daring to invoke it
>without some hints.

.PP
I suppose you could use rwvol in combination with the debugger, but that's rather involved.  A better choice would be to use /systest/ssr_util/fixvol.
.PP
Once you are in, you can type in 'h' for help, but here is a basic runthrough.
.nf
(fv [p])> r pv
...blah blah blah...
(fv [p])> edit pv
pv> h
-->Legal choices are:
    q           up
    vers        apollo[]    name[]      uid[]       dtype       b_per_vol
    s_per_trk   t_per_cyl   lv_list[]   alv_list[]  bs_daddr    diag_daddr
    sect_st     sect_size   pre_comp    b_per_pvol  boot_daddr  grp_size
    grp_my_n    grp_nums[]  grp_alg     s_per_blk   soft_sect   ver_len
    version[]   cookie      pdaddr
pv> name[]
 (  8) name[0]       ==     ( 0)  : `I
 (  9) name[1]       ==     ( 0)  : `'
 (  A) name[2]       ==     ( 0)  : `m
 (  B) name[3]       ==     ( 0)  : `_
 (  C) name[4]       ==     ( 0)  : `s
 (  D) name[5]       ==     ( 0)  : `o
 (  E) name[6]       ==     ( 0)  : `_
 (  F) name[7]       ==     ( 0)  : `f
 ( 10) name[8]       ==     ( 0)  : `o
 ( 11) name[9]       ==     ( 0)  : `r
 ( 12) name[A]       ==     ( 0)  : `g
 ( 13) name[B]       ==     ( 0)  : `e
 ( 14) name[C]       ==     ( 0)  : `t
 ( 15) name[D]       ==     ( 0)  : `f
 ( 16) name[E]       ==     ( 0)  : `u
 ( 17) name[F]       ==     ( 0)  : `l
 ( 18) name[10]      ==     ( 0)  :
 ( 19) name[11]      ==     ( 0)  :
 ( 1A) name[12]      ==     ( 0)  :
 ( 1B) name[13]      ==     ( 0)  :
 ( 1C) name[14]      ==     ( 0)  :
 ( 1D) name[15]      ==     ( 0)  :
 ( 1E) name[16]      ==     ( 0)  :
 ( 1F) name[17]      ==     ( 0)  :
 ( 20) name[18]      ==     ( 0)  :
 ( 21) name[19]      ==     ( 0)  :
 ( 22) name[1A]      ==     ( 0)  :
 ( 23) name[1B]      ==     ( 0)  :
 ( 24) name[1C]      ==     ( 0)  :
 ( 25) name[1D]      ==     ( 0)  :
 ( 26) name[1E]      ==     ( 0)  :
 ( 27) name[1F]      ==     ( 0)  :
pv> q

(fv [p])> show pv

version: 0, apollo: , name: "I'm_so_forgetful"
uid: 0.00000000 uid_$nil, built on 0

dtype: 0, blocks_per_pvol: 0 (0)
sects_per_track: 0, tracks_per_cyl: 0


phys_badspot_daddr: 0, phys_diag_daddr: 0
phys_sector_start: 0, phys_sector_size: 0 (0), pre_comp: 0

(fv [p])> w
.
.
.


-- 
"There is a time to laugh and a time not to laugh and this is not one of them."
                                              Inspector Jacques Clouseau

sboyle@mentor.com				Mentor Graphics Corporation