Обсуждение: using multiple partitions for a single table
Is it possible in postgres 7.1.3 to have a single table span multiple partitions? Or is using RAID the only option? Thanks Taher __________________________________________________ Do You Yahoo!? Get email alerts & NEW webcam video instant messaging with Yahoo! Messenger http://im.yahoo.com
On Wednesday, September 5, 2001, at 06:58 AM, Taher H. Haveliwala wrote: > Is it possible in postgres 7.1.3 to have a single > table span multiple partitions? Or is using RAID the > only option? > > Thanks > Taher Hi there, On Linux, you can use LVM (Logical Volume Manager) to do what you want. I use LVM for a slightly different reason (So I can allocate disk space as needed for different filesystems on the fly), but you can use it for RAID like things, but it is more flexible (Esp with XFS filesystem). I believe there is a similar (Even the same..) project for BSD, and of course it is inspired by stuff that commercial unix systems have had for a while. ============================== David Stanaway Personal: david@stanaway.net Work: david@netventures.com.au
At 04:55 PM 9/4/2001 , David Stanaway wrote: >On Wednesday, September 5, 2001, at 06:58 AM, Taher H. Haveliwala wrote: > >>Is it possible in postgres 7.1.3 to have a single >>table span multiple partitions? Or is using RAID the >>only option? >> >>Thanks >>Taher Yes, you can move individual files that are under your $PGDATA directory to some other volumes, and then point to them with symbolic links. >Hi there, >On Linux, you can use LVM (Logical Volume Manager) to do what you want. [snip] >I believe there is a similar (Even the same..) project for BSD, and of >course it is inspired by stuff that commercial unix systems have had for a >while. It's called "vinum", and is modeled after (or at least inspired by) the Veritas Volume Manager. >============================== >David Stanaway >Personal: david@stanaway.net >Work: david@netventures.com.au > >---------------------------(end of broadcast)--------------------------- >TIP 6: Have you searched our list archives? > >http://www.postgresql.org/search.mpl -crl -- Chad R. Larson (CRL22) chad@eldocomp.com Eldorado Computing, Inc. 602-604-3100 5353 North 16th Street, Suite 400 Phoenix, Arizona 85016-3228
"Taher H. Haveliwala" <taherh24@yahoo.com> writes:
> Is it possible in postgres 7.1.3 to have a single
> table span multiple partitions? Or is using RAID the
> only option?
RAID or LVM are the best scenario. If you're really in a bind you
could manually move table segments to different partitions and set up
symlinks from the original location. But this is a pain in the neck;
also, I would not recommend doing it while the postmaster is running.
regards, tom lane
Thanks all for the suggestions. I've decided to go with LVM. It would appear to be the most flexible solution. Taher --- Tom Lane <tgl@sss.pgh.pa.us> wrote: > "Taher H. Haveliwala" <taherh24@yahoo.com> writes: > > Is it possible in postgres 7.1.3 to have a single > > table span multiple partitions? Or is using RAID > the > > only option? > > RAID or LVM are the best scenario. If you're really > in a bind you > could manually move table segments to different > partitions and set up > symlinks from the original location. But this is a > pain in the neck; > also, I would not recommend doing it while the > postmaster is running. > > regards, tom lane __________________________________________________ Do You Yahoo!? Get email alerts & NEW webcam video instant messaging with Yahoo! Messenger http://im.yahoo.com
But can I do that?
e.g.
There is a customers table that keeps customers record but for two
company: A & B.
can I store A's customers & B's customers record into two different
directory? That is the mean I know for table partitioning. Is that right?
thx,
Corn