Date: Thu, 1 Aug 2002 10:04:27 -0500 From: Drew Raines <drew-dated-1028646153.33b208@rain3s.net> To: Greg 'groggy' Lehey <grog@FreeBSD.org> Cc: freebsd-questions@freebsd.org Subject: Re: Striped Vinum on two drives Message-ID: <20020801150427.GJ26818@mail.rain3s.net> In-Reply-To: <20020801010118.GM17787@wantadilla.lemis.com> References: <20020731211840.GN19920@mail.rain3s.net> <20020801010118.GM17787@wantadilla.lemis.com>
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Greg 'groggy' Lehey wrote:
>
> On Wednesday, 31 July 2002 at 16:18:40 -0500, Drew Raines wrote:
> > I have a machine with two hard drives:
> >
> > ad0 Maxtor 13 GB
> > da0 Fujitsu 36 GB
> >
> > I'd like to create root, swap, and usr partitions on the
> > beginning of ad0, and have the rest of the drive, as well as
> > all of da0 be one giant 45 GB filesystem. Something like:
> >
> > ad0 /
> > swap
> > /usr
> > /bigfs
> > da0 /bigfs (cont.)
[...]
> No, I'd consider this a fairly typical application.
[...]
> > Also, *can* I do it? I just want the two spindles to look
> > like one disk, striping the data accordingly.
>
> Yes, you can do that. But given the discrepancy in size
> between your disks, you might find it more useful to
> concatenate them.
OK. I've done that, but I have a few questions.
(1) Where did my space on /bigfs go?
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/da0s1a 99742 33574 58190 37% /
/dev/da0s1e 3096462 81006 2767740 3% /usr
procfs 4 4 0 100% /proc
/dev/vinum/1 43187825 1 39732798 0% /bigfs
Does it really take 3.5 GB for Vinum to store information? I
thought it was 265 blocks.
(2) How do I rename that ``1'' volume? I created it with help
from an example in the archives without realizing that
would be the name. I tried:
# umount /bigfs
# vinum stop 1
[Aug 1 09:52:46 dawson /kernel: vinum: volume 1 is down]
# vinum rm 1
Can't remove 1: Device busy (16)
[Aug 1 09:52:57 dawson /kernel: vinum: 1 is up]
# vinum list
2 drives:
D Abraham State: up Device /dev/da0s1f Avail: 0/30530 MB (0%)
D Isaac State: up Device /dev/ad0s1e Avail: 0/12982 MB (0%)
1 volumes:
V 1 State: up Plexes: 1 Size: 42 GB
1 plexes:
P 1.p0 C State: up Subdisks: 2 Size: 42 GB
2 subdisks:
S 1.p0.s0 State: up PO: 0 B Size: 29 GB
S 1.p0.s1 State: up PO: 29 GB Size: 12 GB
Here's my configuration info:
drive Abraham device /dev/da0s1f
drive Isaac device /dev/ad0s1e
volume 1 setupstate
plex org concat
sd length 0 drive Abraham
sd length 0 drive Isaac
# /dev/da0s1a:
[...]
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 202752 0 4.2BSD 2048 16384 97 # (Cyl. 0 - 12*)
b: 2099200 202752 swap # (Cyl. 12*- 143*)
c: 71119692 0 unused 0 0 # (Cyl. 0 - 4426*)
e: 6291456 2301952 4.2BSD 2048 16384 89 # (Cyl. 143*- 534*)
f: 62526284 8593408 vinum # (Cyl. 534*- 4426*)
# /dev/ad0s1e:
[...]
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
c: 26587512 0 unused 0 0 # (Cyl. 0 - 1654*)
e: 26587512 0 vinum # (Cyl. 0 - 1654*)
Thanks for your time, Greg.
-Drew
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