Re: Is there a size limit of natacontrol?
Thanks for the patch. I will check how it will go. ;-) On 2/28/12, Francois Tigeot wrote: > Hi, > > On Mon, Feb 27, 2012 at 12:28:00PM +, Alex Hornung wrote: >> >> On 27/02/12 12:20, Zenny wrote: >> > I tried to create a RAID10 with natacontrol with 4 2TB HDDs, but it >> > only shows 2TB (1718306MB) size of ar0 created instead of 4TB. >> >> In principle there is no such limit that I'm aware of, apart from the >> MBR partition size limit. It all depends where you are seeing those 2 >> TB. If it's a partition size, try using GPT. > > Nataraid itself doesn't seem to be limited to 2TB RAID volumes but some > of the on-disk metadata format it uses are. > > By default, when no BIOS-created metadata is recognized, natacontrol > creates a volume using the Promise metadata format -- and this one has > an inherent limit of 32-bit disk sectors. > > The Intel MatrixRAID format moves this limit to 64-bit sectors, way > beyond the 2TB barrier. > > The attached patch changes nataraid to use it by default instead of the > Promise format. It _could_ allow the creation of > 2TB RAID volumes on > unrecognized controllers. > > -- > Francois Tigeot >
Re: Is there a size limit of natacontrol?
Hi,
On Mon, Feb 27, 2012 at 12:28:00PM +, Alex Hornung wrote:
>
> On 27/02/12 12:20, Zenny wrote:
> > I tried to create a RAID10 with natacontrol with 4 2TB HDDs, but it
> > only shows 2TB (1718306MB) size of ar0 created instead of 4TB.
>
> In principle there is no such limit that I'm aware of, apart from the
> MBR partition size limit. It all depends where you are seeing those 2
> TB. If it's a partition size, try using GPT.
Nataraid itself doesn't seem to be limited to 2TB RAID volumes but some
of the on-disk metadata format it uses are.
By default, when no BIOS-created metadata is recognized, natacontrol
creates a volume using the Promise metadata format -- and this one has
an inherent limit of 32-bit disk sectors.
The Intel MatrixRAID format moves this limit to 64-bit sectors, way
beyond the 2TB barrier.
The attached patch changes nataraid to use it by default instead of the
Promise format. It _could_ allow the creation of > 2TB RAID volumes on
unrecognized controllers.
--
Francois Tigeot
diff --git a/sys/dev/disk/nata/ata-raid.c b/sys/dev/disk/nata/ata-raid.c
index 8438614..505a912 100644
--- a/sys/dev/disk/nata/ata-raid.c
+++ b/sys/dev/disk/nata/ata-raid.c
@@ -1105,11 +1105,11 @@ ata_raid_create(struct ata_ioc_raid_config *config)
* metadata format from the disks (if we support it).
*/
kprintf("WARNING!! - not able to determine metadata format\n"
- "WARNING!! - Using FreeBSD PseudoRAID metadata\n"
+ "WARNING!! - Using Intel PseudoRAID metadata\n"
"If that is not what you want, use the BIOS to "
"create the array\n");
- ctlr = AR_F_FREEBSD_RAID;
- rdp->disks[disk].sectors = PROMISE_LBA(rdp->disks[disk].dev);
+ ctlr = AR_F_INTEL_RAID;
+ rdp->disks[disk].sectors = INTEL_LBA(rdp->disks[disk].dev);
break;
}
Re: Is there a size limit of natacontrol?
Nope, it is not the partition size, I guess, but it is when I create an RAID array of 4 HDDs with 2TB each like ar0 with 'natacontrol create RAID10 128 ad4 ad6 ad8 ad10' And even when I specify the chunk size of 128k (because I created 128k chunks in BIOS, it creates 64k chunk only, a bug?) DFBSDv3.0.1 could not see four drives as an array (but as separate drives) although I created a RAID10 array in Sil3114 BIOS while booting. Or did I miss something? Mr. Sasha Wildner tried to help online, but could not got further than that. Any help? On 2/27/12, Alex Hornung wrote: > Hi, > > On 27/02/12 12:20, Zenny wrote: >> I tried to create a RAID10 with natacontrol with 4 2TB HDDs, but it >> only shows 2TB (1718306MB) size of ar0 created instead of 4TB. > > In principle there is no such limit that I'm aware of, apart from the > MBR partition size limit. It all depends where you are seeing those 2 > TB. If it's a partition size, try using GPT. > >
Re: Is there a size limit of natacontrol?
Hi, On 27/02/12 12:20, Zenny wrote: > I tried to create a RAID10 with natacontrol with 4 2TB HDDs, but it > only shows 2TB (1718306MB) size of ar0 created instead of 4TB. In principle there is no such limit that I'm aware of, apart from the MBR partition size limit. It all depends where you are seeing those 2 TB. If it's a partition size, try using GPT.
