Chunks and Offset.
Eduardo Morales asked what happens when adding a cooked-file chunk with a non-zero offset. Art Kagel said no problem, but a chunk must not end beyond the 2GB point (offset plus size under 2^31-1). Harry Sheng asked about two 2GB chunks on a 4GB raw disk; Neil Truby said yes, but Art said not with Informix offsets, so partition at OS or volume manager level.
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Hi Gurus, I have a query, what will happen if I add another chunk (cooked file) and the offset is not zero. Regards. Jojo
Eduardo MORALES wrote: > > Hi Gurus, > > I have a query, what will happen if I add another chunk (cooked file) and the offset is not zero. No problems, just keep in mind that no chunk can END beyond 2GB point in the file if you OS supports larger files (ie OFFSET + SIZE < 2^31-1). Art S. Kagel
Can I create 2 2GB chunks on 1 4GB raw disk ? Art S. Kagel wrote in message <3874BF57.24EF55CA@bloomberg.net>... >Eduardo MORALES wrote: >> >> Hi Gurus, >> >> I have a query, what will happen if I add another chunk (cooked file) and the offset is not zero. > >No problems, just keep in mind that no chunk can END beyond 2GB point in the >file if you OS supports larger files (ie OFFSET + SIZE < 2^31-1). > >Art S. Kagel
Yes Harry Sheng wrote in message <852osj$59n$1@kannews.ca.newbridge.com>... >Can I create 2 2GB chunks on 1 4GB raw disk ? > >Art S. Kagel wrote in message <3874BF57.24EF55CA@bloomberg.net>... >>Eduardo MORALES wrote: >>> >>> Hi Gurus, >>> >>> I have a query, what will happen if I add another chunk (cooked file) >and the offset is not zero. >> >>No problems, just keep in mind that no chunk can END beyond 2GB point in >the >>file if you OS supports larger files (ie OFFSET + SIZE < 2^31-1). >> >>Art S. Kagel > >
Not using Informix offsets you can't. You will have to partition the drive at the OS level or using a Volume Manager to create two 2GB logical devices. You can then use these as your chunks. Art S. Kagel Harry Sheng wrote: > > Can I create 2 2GB chunks on 1 4GB raw disk ? > > Art S. Kagel wrote in message <3874BF57.24EF55CA@bloomberg.net>... > >Eduardo MORALES wrote: > >> > >> Hi Gurus, > >> > >> I have a query, what will happen if I add another chunk (cooked file) > and the offset is not zero. > > > >No problems, just keep in mind that no chunk can END beyond 2GB point in > the > >file if you OS supports larger files (ie OFFSET + SIZE < 2^31-1). > > > >Art S. Kagel