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Disk Slicing

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kozlow

MIS
Mar 3, 2003
326
US
I have a hard time understanding "Disk Slicing"... I am to use to JFS filesystems.

does anyone know a good artical that can help me out?

Thanks...
 
If you are wanted to know about JFS, you asking the wrong forum, you need to be asking an AIX forum that question
 
That is why I asked about disk slicing.... Which I see is used by solaris and UFS filesystems.....
 
You can also use 'soft partitions' in some versions, which allows the creation more than 7 partitions. Try a keyword search for soft partition in this forum.

I want to be good, is that not enough?
 
Thanks.....

I see in our prtvtoc of the raw disk that there is several gaps of 5 Meg that is not allocated.

Did this happen when the system was loaded and the OS needed to start slices on certain locations because of blocksizes?

Can a slice be enlarged or can you enlarge the UFS filesystem by using two slices?

Again, I am thinking in JFS so I tring to get it right.....
 
I am not sure with JFS.. You need to go to that forum to find out if there is a reason for the 5 meg gaps in the partition table. If it was UFS, I would say the person who set up the partition table didn't know what they were doing. There should be no gaps between partitions.

You can use concatination (I think I spelled that right) RAID0 to combine partitions.
 
providing you have room to use, you can grow a slice that is not mounted or in use. You can do this be deleting another slice, and tacking it on to the slice you want to grow. If you have data on a slice you want to grow, then no you can not grow it. You can modify the table accordingly and then label it to take affect.

You can also use metadevices (SVM or disksuite : same thing just different names) you can concat/stripe slices together, so yes you can enlarge a UFS filesystem as long as its under a volume manager control, without a volume manager, then no.

you might want to take a look at ZFS, maybe it would be something of interest.
 
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