> Volume Data > Tracks . : 982,800 / 15 = 65,520 = X'FFF0'
On Thu, Jul 21, 2016 at 2:17 PM, Campbell Jay <[email protected]> wrote: > Agree with John. > Doc should say first halfword of bytes 0 - 3 & 4 - 7. > > MJI2 e . : IM404A > Command ===> > > Unit . . : 3390 > > Volume Data VTOC Data Free Space Tracks > Cyls > Tracks . : 982,800 Tracks . : 360 Size . . : > 269,730 17,974 > %Used . : 72 %Used . . : 1 Largest . : > 67,950 4,530 > Trks/Cyls: 15 Free DSCBS: 17,892 Free > > Extents . : 36 > > Disclaimer: No idea what he's working on > > Jay Campbell > IBM OS Support Section > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Reichman Joseph > Sent: Thursday, July 21, 2016 3:09 PM > To: [email protected] > Subject: Re: DEVTYPE INFO=DASD > > I just got word from Jay Campbell that the device capability is 17,974 cyls I > am getting back X'FFF0' or 65,520, Since he is in touch with IBM I would > suggest you contact him > > Thanks > > Joe Reichman > Joe Reichman > > IT Specialist > Master Files Division > New Carrollton Federal Building, B7-182 > OS:CTO:AD:CP:I:IB > Flex M,T,Th,F > Home office (240) 863 - 3965 > Office (240) 613-4350 > Cell (917) 748-9693 > TOD M - F 7:30 am - 4:00 pm > > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of John Eells > Sent: Thursday, July 21, 2016 2:42 PM > To: [email protected] > Subject: Re: DEVTYPE INFO=DASD > > Well, yes, but we should get the book right. So do you mind telling me what > the actual volume size is, just to confirm? > > Reichman Joseph wrote: >> It is the first half word of each has to be >> >> Joe Reichman >> Joe Reichman >> >> IT Specialist >> Master Files Division >> New Carrollton Federal Building, B7-182 OS:CTO:AD:CP:I:IB Flex >> M,T,Th,F Home office (240) 863 - 3965 Office (240) 613-4350 >> Cell (917) 748-9693 >> TOD M - F 7:30 am - 4:00 pm >> >> >> -----Original Message----- >> From: IBM Mainframe Discussion List [mailto:[email protected]] >> On Behalf Of John Eells >> Sent: Thursday, July 21, 2016 2:35 PM >> To: [email protected] >> Subject: Re: DEVTYPE INFO=DASD >> >> I think I understand your confusion. I'm not sure why you're using the z/OS >> V1.10 level of the book. But in any event, the current (V2.2) level of the >> book says this returns, for INFO=DASD: >> >> Returns 16 bytes as follows: >> Bytes 0-3 - Number of cylinders on the device, excluding alternates. >> <snip> >> >> Bytes 4-7 - Number of tracks per cylinder. >> >> So one would reasonably expect x'FFF00000' to be the number of cylinders, >> and x'000FF000' to be the number of tracks per cylinder. The values of the >> first halfwords in each word, however, seem far more reasonable (possible, >> even!). The correct number of tracks/cylinder is definitely 15. >> >> But what is the actual size of the volume? You can use "V" on ISPF >> OPT3.4 to see VTOC information, including the volume size in tracks under >> "Volume data" on the left. Divide by 15 to get cylinders. What do you see? >> >> It's likely RCF time... >> >> >> Reichman Joseph wrote: >>> 7.2.15 Marked DEVTYPE- info form from DFSMSdfp "Advanced Services" z/os >>> V1R10.0 >>> >>> Joe Reichman >>> Joe Reichman >>> >>> IT Specialist >>> Master Files Division >>> New Carrollton Federal Building, B7-182 OS:CTO:AD:CP:I:IB Flex >>> M,T,Th,F Home office (240) 863 - 3965 Office (240) 613-4350 >>> Cell (917) 748-9693 >>> TOD M - F 7:30 am - 4:00 pm >>> >>> >>> -----Original Message----- >>> From: IBM Mainframe Discussion List [mailto:[email protected]] >>> On Behalf Of Elardus Engelbrecht >>> Sent: Thursday, July 21, 2016 12:52 PM >>> To: [email protected] >>> Subject: Re: DEVTYPE INFO=DASD >>> >>> Reichman Joseph wrote: >>> >>>> The doc says bytes 0 - 3 is cylinders bytes 0 -3 is FFF00000 and >>>> bytes 4 - 7 000FF000 is tracks per cyl ? am I misreading >>>> misunderstanding the documentation >>> >>> What docs? Could you be kind to give us the URL of that source of above >>> info and docs? >>> >>>> I was looking for the capability on a dasd device DEVTYPE >>>> (R6),(AREA,L'AREA),INFOLIST=ILIST2 >>>> ILIST2 DEVTYPE INFO=DASD >>>> AREA DS XL16 >>> >>> Hmmm, interesting application of that useful macro. I must try out >>> this little gem next week on my z/OS v2.1 sandbox when I'm returning >>> to my bread and butter work... ;-) >>> >>>> This was the data returned in area R15 = 0 >>>> FFF00000 000FF000 00000100 08000000 >>> >>> On what z/OS level were you trying to try out that Assembler snippet? How >>> did you obtained the contents of that R15? Via a dump or a MVC or something >>> else? >>> >>> >>>> Mike Schwab wrote: >>> >>>>> FFF00000 000FF000 00000100 08000000 >>>> x'FFF0' would be 65520 cylinders. x'000F' would be 15 tracks per >>>> cylinder. Reasonable for a 3390-54. >>> >> <snip> >> >> >> -- >> John Eells >> IBM Poughkeepsie >> [email protected] >> >> ---------------------------------------------------------------------- >> For IBM-MAIN subscribe / signoff / archive access instructions, send >> email to [email protected] with the message: INFO IBM-MAIN >> >> ---------------------------------------------------------------------- >> For IBM-MAIN subscribe / signoff / archive access instructions, send >> email to [email protected] with the message: INFO IBM-MAIN >> > > > -- > John Eells > IBM Poughkeepsie > [email protected] > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email to > [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
