Raid 1+0

[Jack L.]

What size are the disks? That should give a hint on what raid level that is.

On Mon, Apr 18, 2016 at 12:22 PM, Bernt Hansson <bah at bananmonarki.se> wrote:
> 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 at 0
>    State: ACTIVE (ACTIVE)
> 2. Name: ada1
>    Mediasize: 1000204886016 (932G)
>    Sectorsize: 512
>    Mode: r1w1e1
>    ReadErrors: 0
>    Subdisks: r0(RAID 1   LD  1):1 at 0
>    State: ACTIVE (ACTIVE)
> 3. Name: ada2
>    Mediasize: 1000204886016 (932G)
>    Sectorsize: 512
>    Mode: r1w1e1
>    ReadErrors: 0
>    Subdisks: r1(RAID 1   LD  2):0 at 0
>    State: ACTIVE (ACTIVE)
> 4. Name: ada3
>    Mediasize: 1000204886016 (932G)
>    Sectorsize: 512
>    Mode: r1w1e1
>    ReadErrors: 0
>    Subdisks: r1(RAID 1   LD  2):1 at 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 at 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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