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01-28-2002 01:10 AM
01-28-2002 01:10 AM
Gents/Ladies,
Is there someway to check the density write setting when creating a DLT tape.
I am using an old and new DLT drive (4000 and 8000), and want to make sure the correct density is being used when the tape writes on the HP drive. Despite the density led on the dives facia indicating the density setting, sometimes the density writes at max density (40) when I am trying to get 20.
(I am using the default /dev/rmt/0m driver)
cheers
John
Is there someway to check the density write setting when creating a DLT tape.
I am using an old and new DLT drive (4000 and 8000), and want to make sure the correct density is being used when the tape writes on the HP drive. Despite the density led on the dives facia indicating the density setting, sometimes the density writes at max density (40) when I am trying to get 20.
(I am using the default /dev/rmt/0m driver)
cheers
John
chicken or egg first?
Solved! Go to Solution.
3 REPLIES 3
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01-28-2002 01:40 AM
01-28-2002 01:40 AM
SolutionYes, there is. You need to create a special device file using;
mksf -H
See man on mksf and go the section on the stape driver to see all the density options. There are quite a few for DLT drives. Try different ones until you get the desired effect.
Im from Palmerston North, New Zealand, but somehow ended up in London...
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01-28-2002 02:16 AM
01-28-2002 02:16 AM
Re: DLT drives
Superb,
thanks very much for your help Stefan
John
thanks very much for your help Stefan
John
chicken or egg first?
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01-28-2002 04:29 AM
01-28-2002 04:29 AM
Re: DLT drives
To expand on Stefan's answer, density is controlled by bits in the minor number and different device files have different options. After using mksf to create uncompressed device files, use the lssf command to verify the settings as in:
lssf /dev/rmt/*
The term "best density" indicates that compression is turned on when using this device file.
Bill Hassell, sysadmin
lssf /dev/rmt/*
The term "best density" indicates that compression is turned on when using this device file.
Bill Hassell, sysadmin
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
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