Date: Thu, 28 Aug 2003 11:52:44 +0800 From: "Francis A. Vidal" <francisv-sender-8914b8@irc.dagupan.com> To: <freebsd-fs@freebsd.org> Subject: Problem with Vinum RAID-5 configuration Message-ID: <1062042762.4511.TMDA@irc.dagupan.com>
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Hi all,
I'm configuring a RAID-5 filesystem on a Pentium III 1Ghz machine (FreeBSD
4.9-PRERELEASE). The disks are "dangerously dedidcated." I created the
filesystem using this:
hostname# vinum create -v -f /etc/vinum.conf
1: drive d1 device /dev/ad2s1e
2: drive d2 device /dev/ad4s1e
3: drive d3 device /dev/ad6s1e
4: drive d4 device /dev/ad8s1e
5: drive d5 device /dev/ad10s1e
6: volume raid5
7: plex org raid5 512k
8: sd length 78167m drive d1
9: sd length 78167m drive d2
10: sd length 78167m drive d3
11: sd length 78167m drive d4
12: sd length 78167m drive d5
5 drives:
Drive d1: Device /dev/ad2s1e
Created on hostname.dagupan.com at Thu Aug 28 11:38:56 2003
Config last updated Thu Aug 28 11:38:56 2003
Size: 81964302336 bytes (78167 MB)
Used: 81964175872 bytes (78167 MB)
Available: 126464 bytes (0 MB)
State: up
Last error: none
Active requests: 0
Maximum active: 0
Drive d2: Device /dev/ad4s1e
Created on hostname.dagupan.com at Thu Aug 28 11:38:56 2003
Config last updated Thu Aug 28 11:38:56 2003
Size: 81964302336 bytes (78167 MB)
Used: 81964175872 bytes (78167 MB)
Available: 126464 bytes (0 MB)
State: up
Last error: none
Active requests: 0
Maximum active: 0
Drive d3: Device /dev/ad6s1e
Created on hostname.dagupan.com at Thu Aug 28 11:38:56 2003
Config last updated Thu Aug 28 11:38:56 2003
Size: 81964302336 bytes (78167 MB)
Used: 81964175872 bytes (78167 MB)
Available: 126464 bytes (0 MB)
State: up
Last error: none
Active requests: 0
Maximum active: 0
Drive d4: Device /dev/ad8s1e
Created on hostname.dagupan.com at Thu Aug 28 11:38:56 2003
Config last updated Thu Aug 28 11:38:56 2003
Size: 81964302336 bytes (78167 MB)
Used: 81964175872 bytes (78167 MB)
Available: 126464 bytes (0 MB)
State: up
Last error: none
Active requests: 0
Maximum active: 0
Drive d5: Device /dev/ad10s1e
Created on hostname.dagupan.com at Thu Jun 12 19:37:43 2003
Config last updated Thu Aug 28 11:38:56 2003
Size: 81964302336 bytes (78167 MB)
Used: 81964175872 bytes (78167 MB)
Available: 126464 bytes (0 MB)
State: up
Last error: none
Active requests: 0
Maximum active: 0
1 volumes:
Volume raid5: Size: 327856160768 bytes (312668 MB)
State: down
Flags:
1 plexes
Read policy: round robin
1 plexes:
Plex raid5.p0: Size: 327856160768 bytes (312668 MB)
Subdisks: 5
State: init
Organization: raid5 Stripe size: 512 kB
Part of volume raid5
5 subdisks:
Subdisk raid5.p0.s0:
Size: 81964040192 bytes (78167 MB)
State: empty
Plex raid5.p0 at offset 0 (0 B)
Drive d1 (/dev/ad2s1e) at offset 135680 (132 kB)
Subdisk raid5.p0.s1:
Size: 81964040192 bytes (78167 MB)
State: empty
Plex raid5.p0 at offset 524288 (512 kB)
Drive d2 (/dev/ad4s1e) at offset 135680 (132 kB)
Subdisk raid5.p0.s2:
Size: 81964040192 bytes (78167 MB)
State: empty
Plex raid5.p0 at offset 1048576 (1024 kB)
Drive d3 (/dev/ad6s1e) at offset 135680 (132 kB)
Subdisk raid5.p0.s3:
Size: 81964040192 bytes (78167 MB)
State: empty
Plex raid5.p0 at offset 1572864 (1536 kB)
Drive d4 (/dev/ad8s1e) at offset 135680 (132 kB)
Subdisk raid5.p0.s4:
Size: 81964040192 bytes (78167 MB)
State: empty
Plex raid5.p0 at offset 2097152 (2048 kB)
Drive d5 (/dev/ad10s1e) at offset 135680 (132 kB)
Inspecting the output of the create command, I noticed that the reported
available space on each drive is 0 MB!
Available: 126464 bytes (0 MB)
Disklabel reveals this:
# /dev/ad2s1e:
type: ESDI
disk: ad2s1
label:
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 255
sectors/cylinder: 16065
cylinders: 9964
sectors/unit: 160086528
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: 160086528 0 unused 0 0 # (Cyl. 0 -
9964*)
e: 160086528 0 vinum # (Cyl. 0 -
9964*)
Fdisk output:
******* Working on device /dev/ad2s1e *******
parameters extracted from in-core disklabel are:
cylinders=9964 heads=255 sectors/track=63 (16065 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=9964 heads=255 sectors/track=63 (16065 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 0, size 160086528 (78167 Meg), flag 80 (active)
beg: cyl 0/ head 0/ sector 1;
end: cyl 1023/ head 235/ sector 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
---
francis a. vidal [bitstop network services] | http://www.bnshosting.net
streaming media + web hosting | http://www.bitstop.ph
v(02)330-2871,(02)330-2872; f(02)330-2873 | http://www.kuro.ph
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