Date: Mon, 18 Apr 2016 21:22:28 +0200 From: Bernt Hansson <bah@bananmonarki.se> To: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Raid 1+0 Message-ID: <571533F4.8040406@bananmonarki.se>
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Hello list
My motherboard has a raid chip on it (AMD SB750), so my plan was to use it.
Since i never used the chip for raid, i thought i might try.
So far this has been done.
Set up 2 arrays with 2 discs in each array with raid1 on both.
Boot up freebsd 10.3-R. Both arrays are found
GEOM_RAID: Promise: Disk ada0 state changed from NONE to ACTIVE.
GEOM_RAID: Promise: Subdisk RAID 1 LD 1:0-ada0 state changed from
NONE to ACTIVE.
GEOM_RAID: Promise: Disk ada1 state changed from NONE to ACTIVE.
GEOM_RAID: Promise: Subdisk RAID 1 LD 1:1-ada1 state changed from
NONE to ACTIVE.
GEOM_RAID: Promise: Volume started.
GEOM_RAID: Promise: Volume RAID 1 LD 1 state changed from STARTING to
OPTIMAL.
GEOM_RAID: Promise: Provider raid/r0 for volume RAID 1 LD 1 created.
GEOM_RAID: Promise: Disk ada2 state changed from NONE to ACTIVE.
GEOM_RAID: Promise: Subdisk RAID 1 LD 2:0-ada2 state changed from
NONE to ACTIVE.
GEOM_RAID: Promise: Disk ada3 state changed from NONE to ACTIVE.
GEOM_RAID: Promise: Subdisk RAID 1 LD 2:1-ada3 state changed from
NONE to ACTIVE.
GEOM_RAID: Promise: Volume started.
GEOM_RAID: Promise: Volume RAID 1 LD 2 state changed from STARTING to
OPTIMAL.
GEOM_RAID: Promise: Provider raid/r1 for volume RAID 1 LD 2 created.
Used gstripe to stripe the arrays raid/r0 + r1 into stripe0
Newfs/mount all work. My question, is this a raid 1+0 or 0+1?
More info can be posted if need be.
# graid list
Geom name: Promise
State: OPTIMAL
Metadata: Promise
Providers:
1. Name: raid/r0
Mediasize: 999999995904 (931G)
Sectorsize: 512
Mode: r1w1e2
Subdisks: ada0 (ACTIVE), ada1 (ACTIVE)
Dirty: No
State: OPTIMAL
Strip: 65536
Components: 2
Transformation: RAID1
RAIDLevel: RAID1
Label: RAID 1 LD 1
descr: Promise RAID1 volume
2. Name: raid/r1
Mediasize: 999999995904 (931G)
Sectorsize: 512
Mode: r1w1e2
Subdisks: ada2 (ACTIVE), ada3 (ACTIVE)
Dirty: No
State: OPTIMAL
Strip: 65536
Components: 2
Transformation: RAID1
RAIDLevel: RAID1
Label: RAID 1 LD 2
descr: Promise RAID1 volume
Consumers:
1. Name: ada0
Mediasize: 1000204886016 (932G)
Sectorsize: 512
Mode: r1w1e1
ReadErrors: 0
Subdisks: r0(RAID 1 LD 1):0@0
State: ACTIVE (ACTIVE)
2. Name: ada1
Mediasize: 1000204886016 (932G)
Sectorsize: 512
Mode: r1w1e1
ReadErrors: 0
Subdisks: r0(RAID 1 LD 1):1@0
State: ACTIVE (ACTIVE)
3. Name: ada2
Mediasize: 1000204886016 (932G)
Sectorsize: 512
Mode: r1w1e1
ReadErrors: 0
Subdisks: r1(RAID 1 LD 2):0@0
State: ACTIVE (ACTIVE)
4. Name: ada3
Mediasize: 1000204886016 (932G)
Sectorsize: 512
Mode: r1w1e1
ReadErrors: 0
Subdisks: r1(RAID 1 LD 2):1@0
State: ACTIVE (ACTIVE)
graid status
Name Status Components
raid/r0 OPTIMAL ada0 (ACTIVE (ACTIVE))
ada1 (ACTIVE (ACTIVE))
ada2 (ACTIVE (ACTIVE))
ada3 (ACTIVE (ACTIVE))
raid/r1 OPTIMAL ada0 (ACTIVE (ACTIVE))
ada1 (ACTIVE (ACTIVE))
ada2 (ACTIVE (ACTIVE))
ada3 (ACTIVE (ACTIVE))
# gstripe status
Name Status Components
stripe/stripe0 UP raid/r0
raid/r1
root@testbox:/usr/home/bernt # gstripe list
Geom name: stripe0
State: UP
Status: Total=2, Online=2
Type: AUTOMATIC
Stripesize: 65536
ID: 364832905
Providers:
1. Name: stripe/stripe0
Mediasize: 1999999860736 (1.8T)
Sectorsize: 512
Stripesize: 65536
Stripeoffset: 0
Mode: r1w1e1
Consumers:
1. Name: raid/r0
Mediasize: 999999995904 (931G)
Sectorsize: 512
Mode: r1w1e2
Number: 0
2. Name: raid/r1
Mediasize: 999999995904 (931G)
Sectorsize: 512
Mode: r1w1e2
Number: 1
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