Date: Thu, 04 Oct 2001 04:43:56 +0100 From: cscott <cscott@telinco.net> To: questions@freebsd.org Subject: expanding vinum concatinations Message-ID: <3BBBDAFC.E4154FC6@telinco.net>
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Hi,
I have recently being playing around with vinum but am having a few
problems
I have a concatinated plex consisting of 3 subdisks, this works fine.
What i want to do is add more space to the plex without losing data
already on it, this is where the problem starts.
If my understanding is correct i need to add a subdisk then attach it to
the plex with the attach command
here is my existing config
vinum -> list
3 drives:
D vinumdrive0 State: up Device /dev/ad3s1e Avail:
0/250 MB (0%)
D vinumdrive1 State: up Device /dev/ad3s1f Avail:
0/250 MB (0%)
D vinumdrive2 State: up Device /dev/ad3s1g Avail:
0/250 MB (0%)
1 volumes:
V big State: up Plexes: 1 Size: 749
MB
1 plexes:
P big.p0 C State: up Subdisks: 3 Size: 749
MB
3 subdisks:
S big.p0.s0 State: up PO: 0 B Size: 249
MB
S big.p0.s1 State: up PO: 249 MB Size: 249
MB
S big.p0.s2 State: up PO: 499 MB Size: 249
MB
now to add a subdisk i create the following file
drive vinumdrive3 device /dev/ad3s1h
sd name s3.p1.s0 drive vinumdrive3
then run the following comand
create new
3: sd name s3.p1.s0 drive vinu mdrive3
** 3 No space for on vinumdrive3: No space left on device
4 drives:
D vinumdrive0 State: up Device /dev/ad3s1e
Avail: 0/250 MB (0%)
D vinumdrive1 State: up Device /dev/ad3s1f
Avail: 0/250 MB (0%)
D vinumdrive2 State: up Device /dev/ad3s1g
Avail: 0/250 MB (0%)
D vinumdrive3 State: up Device /dev/ad3s1h
Avail: 799/799 MB (99%)
1 volumes:
V big State: up Plexes: 1
Size: 749 MB
1 plexes:
P big.p0 C State: up Subdisks: 3
Size: 749 MB
2 subdisks:
S big.p0.s0 State: up PO: 0 B
Size: 249 MB
S big.p0.s1 State: up PO: 249 MB
Size: 249 MB
S big.p0.s2 State: up PO: 499 MB
Size: 249 MB
As you can see the subdisk wasnt created but vinum now know about the
drive. I have searched around all I can but cant seem to find anything
to suggest how to do this, or maybe in just being dumb
Assuming I get the subdisk created am I correct in thinking all i have
to do is an
attach new_sub_disk big
or do I need to stop anything first?
Also do I need to do a makedev afterwards?
Finally, I realise I wont see the new capacity until the filesystem is
configured to use it. Presumably I can use growfs to do this without any
problems on freebsd 4.4
This is the disklabel of the test drive
# /dev/ad3s1:
type: ESDI
disk: ad3s1
label:
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 64
sectors/cylinder: 4032
cylinders: 786
sectors/unit: 3173121
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track seek: 0 # milliseconds
drivedata: 0
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
c: 3173121 0 unused 0 0 # (Cyl. 0 -
786*)
e: 512000 0 vinum # (Cyl. 0 -
126*)
f: 512000 512000 vinum # (Cyl. 126*-
253*)
g: 512000 1024000 vinum # (Cyl. 253*-
380*)
h: 1637121 1536000 vinum # (Cyl. 380*-
786*)
Cheers
Chris
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