Everhart,Glenn
From:	Mark D. Jilson [jilly@clarityconnect.com]
Sent:	Wednesday, April 01, 1998 12:21 PM
To:	Robert J Wright; Info-VAX@Mvb.Saic.Com
Subject:	Re: Backup: How to set its account values
I've added my comments to this.  Otherwise it looks reasonable.

Robert J Wright wrote:

> After having had WAITIDLEBCB errors from Backup, we were strongly advised to
> conform to the recommendations for setting the account parameters for the
> account from which backups are run. I put together the following command
> procedure to facilitate this. I hope you find it useful.
>
> >------------------ cut here ---------------<
> $! SET-BACKUP-ACCOUNT.COM
> $!
> $! Robert J Wright, Curtin University Computing Centre, 1998.
> $!
> $! The following is intended as a quick way to setthe BACKUP account's
> $! parameters to proper values relative to one another.
> $!
> $! Note that in a clustered environment with differently sized nodes, either
> $! a node-specific account must be used on each node, or the common account
> $!should be sized on the smallest node on which Backup will be run.
> $
> $ s = f$verify(0)
> $
> $ node = f$getsyi("nodename")
> $ inquire/nopunc ok "The values will be computed for node ''node', OK? "
> $
> $ wsmax = f$getsyi("wsmax")*512/f$getsyi("page_size")   ! (old style pages)
> $ channelcnt = f$getsyi("channelcnt")
> $
> $! The following calculations are based on Table 10-4, Sytems Managers' Manual
> $! as at VMS 7.1
> $
> $ wsquota = wsmax
> $ wsextent = wsmax
> $ pgflquota = wsmax
> $ fillm = channelcnt - 1

This should be - 15 as the BACKUP process needs to have a number of other channels
besides those open to files.

> $
> $ f3 = 3*fillm
> $ if f3 .gt. 4096
> $ then
> $   diolm = f3
> $ else
> $   diolm = 4096
> $ endif
> $
> $ astlm = 4096
> $ if 3*fillm .gt. astlm then astlm = 3*fillm
> $ if astlm .lt. (diolm+100) then astlm = diolm + 100
> $
> $ biolm = fillm
> $ bytlm = (256*fillm) + (6*diolm)

Add another 50K to this one as too much BYTLM is not problem.

> $ enqlm = fillm + 1

I'd add another 100 to this for general overhead.

> $
> $ inquire ac "Name of Backup account (e.g., CBCKUP)"
> $ if ac .eqs. "" then exit
> $ uaf := @cu_command:uaf.com
> $ write sys$output "/wsquota=''wsquota'
> $ write sys$output "/wsextent=''wsextent'
> $ write sys$output "/pgflquota=''pgflquota'
> $ write sys$output "/fillm=''fillm'
> $ write sys$output "/diolm=''diolm'
> $ write sys$output "/astlm=''astlm'
> $ write sys$output "/biolm=''biolm'
> $ write sys$output "/bytlm=''bytlm'
> $ write sys$output "/enqlm=''enqlm'
> $ write sys$output ""
> $ Inquire yes "The above values will be used. Go ahead?"
> $ if .not. yes then exit
> $ uaf modify 'ac' /wsquota='wsquota/wsextent='wsextent' -
>                   /pgflquota='pgflquota'/fillm='fillm'/diolm='diolm' -
>                   /astlm='astlm'/biolm='biolm'/bytlm='bytlm' -
>                   /enqlm='enqlm'
> $ exit 'f$verify(s)

--
Jilly - Working from Home in the Chemung River Valley - Waverly, NY
 - jilly@clarityconnect.com   - Brett Bodine fan
 - m_jilson@csc32.enet.dec.com   - since 1975 or so
 - http://www.clarityconnect.com/webpages2/jilly -