Date: Fri, 27 Feb 1998 10:32:05 +1030 From: Greg Lehey <grog@lemis.com> To: Wilko Bulte <wilko@yedi.iaf.nl>, shimon@simon-shapiro.org Cc: hackers@FreeBSD.ORG, blkirk@float.eli.net, jdn@acp.qiv.com Subject: Volume manager (was: SCSI Bus redundancy...) Message-ID: <19980227103205.13186@freebie.lemis.com> In-Reply-To: <199802261857.TAA01344@yedi.iaf.nl>; from Wilko Bulte on Thu, Feb 26, 1998 at 07:57:19PM %2B0100 References: <XFMail.980225153123.shimon@simon-shapiro.org> <199802261857.TAA01344@yedi.iaf.nl>
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On Thu, 26 February 1998 at 19:57:19 +0100, Wilko Bulte wrote:
> As Simon Shapiro wrote...
>>
>> On 25-Feb-98 Wilko Bulte wrote:
>> ...
>>
>>> Digital Unix TruClusters do DRD (distributed raw device) now. Things
>>> like Oracle Parallel Server love this. A cluster filesystem is another
>>> kettle of fish of course. But not impossible, see OpenVMS.
>>
>> Stay tuned... FreeBSD will have this functionality too.
>
> Next step: a volume manager?
I have that already:
=== root@razzia (/dev/ttyp0) /freebie/home/vinum/userland 50 -> mount
/dev/wd0a on / (NFS exported, local, writes: sync 0 async 0)
/dev/wd0s1e on /Usr (local, read-only, writes: sync 0 async 0)
procfs on /proc (local, writes: sync 0 async 0)
freebie:/ on /freebie (writes: sync 0 async 0)
freebie:/home on /freebie/home (writes: sync 0 async 0)
freebie:/usr on /freebie/usr (writes: sync 0 async 0)
freebie:/src on /src (writes: sync 0 async 0)
freebie:/S on /S (writes: sync 0 async 0)
/dev/vinum/vol1 on /v1 (local, writes: sync 0 async 0)
/dev/vinum/vol3 on /v3 (local, writes: sync 0 async 0)
=== root@razzia (/dev/ttyp0) /freebie/home/vinum/userland 51 -> v l vol1
Volume 0: vol1 Size: 104857600
State: up Open count: 1 Flags: raw
1 plexes Read policy: round robin
Reads: 67 Bytes read: 3265536
Writes: 11 Bytes written: 22016
=== root@razzia (/dev/ttyp0) /freebie/home/vinum/userland 52 -> v l -r vol3
Volume 2: vol3 Size: 157286400
State: up Open count: 1 Flags:
2 plexes Read policy: round robin
Reads: 1194 Bytes read: 9498624
Writes: 348826 Bytes written: 2806551552
Plex 2: vol3.p0
State: up Organization: concat
Total size: 157286400 bytes (0x9600000)
2 subdisks
Part of volume vol3
Reads: 737 Bytes read: 5656576
Writes: 182844 Bytes written: 1452173824
Subdisk 2: vol3.p0.s0 Length 104857600 State: up
Plex vol3.p0 Offset 0
Reads: 442 Bytes read: 3801088
Writes: 165982 Bytes written: 1354377728
Drive 0: drive2 Device: /dev/sd1h
State: up Last error: none
Size 601052160 (573 MB) Used: 209850880 (200 MB), available 391201280 (373 MB)
Created on razzia.lemis.com at Thu Feb 26 17:51:52 1998
Config last updated Thu Feb 26 17:52:07 1998
Reads: 442 Bytes read: 3801088
Writes: 165983 Bytes written: 1354378240
Subdisk 3: vol3.p0.s1 Length 52428800 State: up
Plex vol3.p0 Offset 204800
Reads: 295 Bytes read: 1855488
Writes: 16862 Bytes written: 97796096
Drive 1: drive4 Device: /dev/sd3h
State: up Last error: none
Size 601052160 (573 MB) Used: 262279680 (250 MB), available 338772480 (323 MB)
Created on razzia.lemis.com at Thu Feb 26 17:51:52 1998
Config last updated Thu Feb 26 17:52:07 1998
Reads: 819 Bytes read: 8963072
Writes: 182855 Bytes written: 1452195840
Plex 3: vol3.p1
State: up Organization: concat
Total size: 104857600 bytes (0x6400000)
1 subdisks
Part of volume vol3
Reads: 457 Bytes read: 3842048
Writes: 165982 Bytes written: 1354377728
Subdisk 4: vol3.p1.s0 Length 104857600 State: up
Plex vol3.p1 Offset 0
Reads: 457 Bytes read: 3842048
Writes: 165982 Bytes written: 1354377728
Drive 1: drive4 Device: /dev/sd3h
State: up Last error: none
Size 601052160 (573 MB) Used: 262279680 (250 MB), available 338772480 (323 MB)
Created on razzia.lemis.com at Thu Feb 26 17:51:52 1998
Config last updated Thu Feb 26 17:52:07 1998
Reads: 819 Bytes read: 8963072
Writes: 182855 Bytes written: 1452195840
Any similarities with the Veritas Volume Manager are merely
intentional.
Greg
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