My testing shows the (disk) volume labeled at a particular partition size will
retain that partition size even through
relabelling.
You must remove the volume and recreate for it to take the new partition size,
or the size set in the Volume Default
Capacity of the disk device being used.
Kit
On 8 Nov 2002 at 3:37, Calvin Thomas wrote:
> I actually tried this when I was testing (accidently). I set up a file
> device on a 60GB partition, and then added another hard drive to the
> partition using ADVFS. This upped the partition size to 96GB's and I tried
> to tell the file device that it was now 96GB's in size. Unfortunately, when
> the nightly backup hit 30GB's (50% of the original size) the backup stopped,
> and staging started.. Right in the middle of my "must not fail" backup job.
> Ouch!
> When I added a second file device in the same partition (in a subdirectory),
> it worked correctly
>
> I should remark that I use a 50% high water mark in the staging policy
>
> The reason I don't want to fool networker with multiple file devices on the
> same partition is the staging. When would staging start if I used 5 file
> devices on a single 175GB? Would it use 925GBs to calculate the high and
> low water marks.? What would it do if I added, or removed a hard drive, and
> shrank or grew the partition? I don't even want to guess....
> I prefer to use the single file / partition for simplicity, and reliability.
> The staging is actually smarter than I thought it was because it uses the
> total size of all the file devices that are included in the staging policy.
> This means that it waits until 2 1/2 partitions are full before it starts
> staging, not at 50% of one file device. Since it's working, "I don't need to
> fix it".
>
> Thanks
> Calvin E. Thomas
> UNIX System Administrator
> NACA Logistics
>
> ----- Original Message -----
> From: <lemons_terry AT emc DOT com>
> To: <calvin.thomas AT nacalogistics DOT com>
> Cc: <NETWORKER AT LISTMAIL.TEMPLE DOT EDU>
> Sent: Tuesday, November 05, 2002 12:15 PM
> Subject: RE: [Networker] Staging in Networker?
>
>
> > Hi Calvin
> >
> > Thanks for all of this great information!
> >
> > You mentioned, "When you create a file device, Networker sets the size of
> > the device to the true total size of the partition it is installed on.
> You
> > CAN NOT change the size of the file device in Networker." That said, I
> > didn't think (though I may be wrong) that you had to use the entire
> > partition for the file type device. If you specify the size of the file
> > type device (in the Volume Default Capacity field), I believe that you can
> > specify multiple file type devices in a single partition. I did this, and
> > it has worked fine for months in a plain backup-to-disk environment; I
> > haven't been staging these savesets to disk, however.
> >
> > tl
> >
> > -----Original Message-----
> > From: Calvin Thomas [mailto:calvin.thomas AT nacalogistics DOT com]
> > Sent: Wednesday, October 30, 2002 3:35 PM
> > To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
> > Subject: Re: [Networker] Staging in Networker?
> >
> >
> > I am currently working on this.
> > I asked the same question(s) previously and got some good info from this
> > group. Here is what I have found out so far.
> >
> > 1. Do NOT use a single file device. If you do, this is what happens. When
> > the file device is full, it will stop the backup, and stage off to tape.
> If
> > you have a single large file device this will take a long time, and your
> > backup job will fail. Not Acceptable.
> > 2. Create 2 or more partitions, and a file device in each. I am setting
> up
> > 5 - 35 GB devices as I write this. Then you total up the amount of space
> > that will give you (175GB in my case), figure out the largest backup you
> > will need to do (78 GB in my case), and set the high water mark of all the
> > devices to ensure that you always have enough space for your largest
> backup
> > ( 80GB for me).
> > 3. When you backup to one file device and the file device gets full, it is
> > marked read only, and the save job continues on the next file device.
> > 4. When one file device is stageing off to tape, a different file device
> is
> > accepting data for your backup job.
> > 5. A file device can either Read, or Write, but NOT both at the same time.
> > Hence the need for multiple devices.
> > 6. When you set up a staging policy in networker, be SURE and include all
> > the file devices in your pool in the same stageing policy. This insures
> the
> > staging policy can transfer the complete save sets from hard drive to tape
> > without leaving part of a save set on a hard drive that staging can't
> > control.
> >
> > One caveat about file devices in Networker (6.1.1).
> > When you create a file device, Networker sets the size of the device to
> the
> > true total size of the partition it is installed on. You CAN NOT change
> the
> > size of the file device in Networker. There is a line in the GUI for it,
> > and you can change it, but Networker will ignore this setting, and use the
> > remembered size of the partition it found when you created it. That is
> why
> > you must create the partitions in the size you want, and then create the
> > file devices inside of these partitions. Do NOT create two file devices
> on
> > a single partition. Each will think it has the total partition to use,
> when
> > it doesn't.
> >
> > Other than these two issues, I have found it to be a fast, simple and
> > beneficial change. One of the things I have found is that I can increase
> > the number of sessions (to 32) on the hard drive, and backup all my
> servers
> > to it at the same time. This has allowed me to reduce my pools from 9 to
> 4.
> > I now have a "Nightly backup with clones" , and "Nightly backup without
> > clones" pools.
> > Another advantage is that each save set is a different file on the
> hard
> > drive, so there is no multiplexing of data to worry about. When it clones
> > or stages to tape, each save set is stored sequentially instead of in
> > parallel.
> >
> >
> >
> > If anyone cares to add to this info, Please respond to the group.
> >
> > Calvin E. Thomas
> > UNIX System Administrator
> > NACA Logistics
> >
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "David W. Loveless" <duke AT UWO DOT CA>
> > To: <NETWORKER AT LISTMAIL.TEMPLE DOT EDU>
> > Sent: Wednesday, October 30, 2002 10:35 AM
> > Subject: [Networker] Staging in Networker?
> >
> >
> > > Are you using the staging features of Legato Networker to push backups
> > > first to disk and later to tape?
> > > If you are, we'd like to hear about your experiences. What problems have
> > > you had? What disks are you using? Have you purchased any add-on
> software
> > > from Legato to help the staging process.
> > >
> > > We're currently running Networker 6.1.1 on Solaris 8 and are actively
> > > exploring this feature.
> > >
> > >
> > > Thanks for your help!
> > >
> > > --
> > > Note: To sign off this list, send a "signoff" command via email
> > > to listserv AT listmail.temple DOT edu or visit the list's Web site at
> > > http://listmail.temple.edu/archives/networker.html where you can
> > > also view and post messages to the list.
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> >
> > --
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>
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++++++++++++++++++++++++++++++++++++++++++++++++
Kit Cunningham - idata Limited
Mobile +64 21 448 444 email: k.cunningham AT idata.co DOT nz
Support Calls to: 0800 backup - 0800 222 587
Support email: support AT idata.co DOT nz
http://www.idata.co.nz
++++++++++++++++++++++++++++++++++++++++++++++++
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