[Info-vax] Need help mounting shadow set

[Tom Adams]

On Oct 6, 9:35 am, VAXman-  @SendSpamHere.ORG wrote:
> In article <96734dd1-bf61-4a00-9f4f-c7ba073b1... at d4g2000vbm.googlegroups.com>, Tom Adams <tadams... at yahoo.com> writes:
>
>
>
>
>
> >On Oct 5, 4:14=A0pm, VAXman-  @SendSpamHere.ORG wrote:
> >> In article <75a84a31-f568-4838-98d8-336897bac... at m20g2000vbp.googlegroups=
> >..com>, Tom Adams <tadams... at yahoo.com> writes:
>
> >> >On Oct 5, 3:16=3DA0pm, "Richard B. Gilbert" <rgilber... at comcast.net>
> >> >wrote:
> >> >> Tom Adams wrote:
> >> >> > On Oct 5, 2:04 pm, Joseph Huber <joseph.hu... at NIRWANA.web.de> wrote:
> >> >> >>tadamsmarschrieb:
>
> >> >> >>> I had to replace one of my disks that was logging errors. =3DA0I b=
> >ought
> >> >> >>> exactly the same make and model disk. =3DA0But it will not mount. =
> >=3DA0I =3D
> >> >am
> >> >> >>> getting an error saying the disk is too small.
> >> >> >>> The new disk shows:
> >> >> >>> Disk $1$DKA100: (EESN), device type COMPAQ ST32171W, is online, fi=
> >le-
> >> >> >> [snip] ...
> >> >> >>> =3DA0 =3DA0 Total blocks =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 41100=
> >00 =3DA0 =3DA0
> >> >> >>> The current system disk that I want to shadow shows:
> >> >> >>> Disk DSA0:, device type DEC RZ1BB-CS, is online, mounted, file-
> >> >> >> [snip]...
>
> >> >> >>> =3DA0 =3DA0 Total blocks =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 =3DA0 41104=
> >80 =3DA0 =3DA0
> >> >> >> The disk might be the same physically, but apparently has different
> >> >> >> firmware leading to different "device type", and slightly less bloc=
> >ks:
> >> >> >> these tiny 480 blocks missing.
>
> >> >> >> --
>
> >> >> >> =3DA0 Joseph Huber =3DA0 -http://www.huber-joseph.de
>
> >> >> > I guess I can do a copy to the new disk and then boot with it as the
> >> >> > shadow master, =3DA0then I can add the old disk to the shadow set.
>
> >> >> > Is there a way to do a direct copy. Or do I have to do a backup imag=
> >e
> >> >> > and then copy to the other disk?
>
> >> >> $ BACKUP /IMAGE DISK1 DISK2- Hide quoted text -
>
> >> >> - Show quoted text -
>
> >> >I needed:
>
> >> >BACKUP/IGNORE=3D3DNOBACKUP ...
>
> >> >To get everything.
>
> >> >I wonder if I should include /ignor=3D3Dlabel ?
>
> >> Why /IGNORE=3DNOBACKUP? =A0NOBACKUP is typically set on things like the P=
> >AGE
> >> and SWAP files. =A0The contents of which are meaningless if you shutdown
> >> and boot from, say, the CD. =A0All you need is the file header which will
> >> defines these files (blocks incorporated within and the address (LBNs) of
> >> said blocks); the content is irrelevant. =A0In fact, the backup will go b=
> >y
> >> faster if you don't waste the time to copy this content.
>
> >> Just issue:
>
> >> $ MOUNT/OVERRIDE=3DIDENTIFICATION DISK1: =A0
> >> $ MOUNT/FOREIGN DISK2:
> >> $ BACKUP/IMAGE DISK1: DISK2:
>
> >> This will init the drive to a size appropriate to hold the files from the
> >> old volume and maintain the label currently in use (which you many wish t=
> >o
> >> keep or you'll need to amend your startup mount commands.
>
> >> --
> >> VAXman- A Bored Certified VMS Kernel Mode Hacker =A0 =A0VAXman(at)TMESIS(=
> >dot)ORG
>
> >> =A0http://www.quirkfactory.com/popart/asskey/eqn2.png
>
> >> =A0 "Well my son, life is like a beanstalk, isn't it?"- Hide quoted text =
> >-
>
> >> - Show quoted text -
>
> >I also used /ignore=3D(nobackup,label).   I use these when I do an image
> >to tape.
>
> You backup your PAGE and SWAP files? A lot of good that'll do you.
> --
> VAXman- A Bored Certified VMS Kernel Mode Hacker    VAXman(at)TMESIS(dot)ORG
>
>  http://www.quirkfactory.com/popart/asskey/eqn2.png
>
>   "Well my son, life is like a beanstalk, isn't it?"- Hide quoted text -
>
> - Show quoted text -

I never thought about it.

We have been using /IGNORE=NOBACKUP  on all images (not on
incrementals) so long that I don't know why we do it or if we have a
good reason.  Probably started before 1986 when I came to work here.