[mod.computers.vax] Problems with BACKUP

SUNDSTRO@FINABO.BITNET.UUCP (02/09/87)

Help!
 
Has anybody had the same problem that i have. When a users wants to
backup his files on a TK50 tape. He uses the following command.With it
he has twice got the system to crash in a middle of a saveset. The
tape is left without the last two EOF marks but is has started on the
saveset. EOF marks are no problem you have to put them there manually,
but that takes approx. 1 hour (because the drive is so slow and you
want to check that you are located on the correct location). I dont
want to continously spend time puting EOF marks on tape. So can
anybody tell if there are some errors in the command line or is it not
correct to do it this way ( I can't see any errors (all is written on
one line, I have edited it to two lines here)). As a note: the last
time he tried saving the same files the second try was successfull.
All savesetts have unique names.
 
The command is as follows:
$backup/ver dua0:<masu.saxen.run>betas1.*,check1.*,stat*.* -
            mua0:dtauql7mwts/save
 
 
Or is this a so called "known bug" to every body else but me, if so is it
fixed in 4.5. If its none of above have anybody any clues where it goes
wrong and has somebody else the same problem (and maybe SPR'D it
or is there any point in doing it when 4.5 is in distribution)
 
Some background information of the tape:
 1 The tape has many savesetts, about 7
 2 Every savesett is about 5000 blocks and approx 600 files.
 
The following is taken from crashdump (little reformatted).
 
System crash information
Time of system crash:  8-FEB-1987 18:35:30.52
Version of system: VAX/VMS VERSION V4.4
 
Reason for BUGCHECK exception: INVEXCEPTN,
            Exception while above ASTDEL or on interrupt stack
 
Process currently executing: SAXEN
Current image file: DUA0:[SYS0.][SYSEXE]BACKUP.EXE;1
Current IPL: 3  (decimal)
 
General registers:
        R0  = 00000003   R1  = 00030000   R2  = 00000000   R3  = 7FF9091B
        R4  = 00000000   R5  = 00000000   R6  = 801D14D0   R7  = 7FFAD908
        R8  = 7FF9FCCC   R9  = 00000032   R10 = 7FF9FCC0   R11 = 00000072
        AP  = 7FF9FB4C   FP  = 7FF9FB30   SP  = 7FF9FB00   PC  = 80004862
        PSL = 00030009
 
Processor registers:              MicroVAX II
        P0BR   = 802FF800     SBR    = 004F7400     ASTLVL = 00000001
        P0LR   = 00000272     SLR    = 00002080     SISR   = 00000000
        P1BR   = 7FB0C800     PCBB   = 001BD878     ICCS   = 00000040
        P1LR   = 001FFAF1     SCBB   = 004F5400     SID    = 08000000
 
        TODR   = 23F7E77A     SYSTYPE= 01010000
 
        ISP    = 80278C00
        KSP    = 7FF9FB00
        ESP    = 7FFE9E00
        SSP    = 7FFED04E
        USP    = 7FF603C8
 
 
I'm very greatfull for any answers, and if someone wants to have
more information from the crashdump i'll gladly send it.
 
Thanks in advance!!!
 
Hans Sundstroem         E-mail earn/bitnet:  SUNDSTRO@FINABO.BITNET
Abo Akademi
Heat Engineering Lab.
Finland
 

cetron%utah-ced@UTAH-CS.ARPA.UUCP (02/09/87)

there was an early bug in the tk50's and vms where the invocation of backup
with the norewind qualifier AND the verify qualifier would either hang for
ever or crash the system.... This was especially irksome since the manual (in
a dark obscure place) warned of not using /norewind/verify but neglected to
mention that /verify was also no good since the /norewind was the default....

Try the same thing again without the verify, the bug might still be in there
since it still was with 4.3...

-ed cetron
center for engineering design
univ of utah

"Thomas_W._Taylor.WBST147"@XEROX.COM.UUCP (02/10/87)

Hans,

Your problem may be due to the filename you are using for your saveset.
While VMS4.x filenames may be 39.39 characters in length, the tape
system doesn't like this.  Try uisng 9.3 instead.

Thomas W. Taylor
Xerox Corp.
Webster, N.Y.  14580