Re: problem with mfiutil

Gary Palmer wrote:
> On Fri, Aug 06, 2010 at 06:58:29PM +0200, Ian FREISLICH wrote:
> > John Baldwin wrote:
> > > On Friday, August 06, 2010 7:32:00 am Ian FREISLICH wrote:
> > > > Hi
> > > > 
> > > > I'm unable to make a raid10 on my servers with 6 disks in each
> > > > stripe.  I tried a few ways:
> > > > 
> > > > ~ # mfiutil -u1 create raid10 -s1M e1:s0,e1:s1,e1:s2,e1:s3,e1:s4,e1:s5 
> > > e1:s6,e1:s7,e1:s8,e1:s9,e1:s10,e1:s11
> > > > mfiutil: Command failed: Invalid parameter
> > > > mfiutil: Failed to add volume: Input/output error
> > > > 
> > > > ~ # mfiutil -u1 create raid10 -s1M 19,29,18,26,22,20 31,30,21,27,28,32
> > > > mfiutil: Command failed: Invalid parameter
> > > > mfiutil: Failed to add volume: Input/output error
> > > > 
> > > > It does however work with 2 disks in each stripe:
> > > > ~ # mfiutil -u1 create raid10 -s1M 19,29 31,30
> > > > 
> > > > any ideas?
> > > 
> > > Yes, you have it inverted.  You are creating a stripe across a bunch of 
> > > RAID-1's and you need to list all the RAID-1's, so something like this:
> > > 
> > > mfiutil -u 1 create raid10 -s 1M 19,31 29,39 18,21 26,27 22,28 20,32
> > 
> > Hmm.  I'll give that a try, but it's not the way the controler
> > configured it fyrom the BIOS utility.  It was definitely a mirror
> > of 2 6 disk stripes.  The controller is a Perc 6/E.
> 
> What you described is RAID 0+1, not RAID 10.  Typically in RAID 0+1 you
> make two stripes, each with half the disks, and then mirror them.  RAID
> 10 you make lots of mirrored drive pairs and then stripe across all the
> mirrors.  RAID 10 has higher redundancy and lower rebuild times than 0+1

Understood and I'm not saying it isn't, it's just what the controller
reported as its config which led me to what I originally posted.
I managed to get the controller to delete the volume it showed
wierdly by adding another volume and then deleting the two.  I then
created the RAID10.  I'd love to know what my colleague did to get
the previous config because it's apparently not supported by this
controller.

This is what it looked like before:

mfi1 Configuration: 7 arrays, 2 volumes, 1 spares
    array 0 of 2 drives:
        drive 23 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EJ9N> SAS enclosure 1, slot 14
        drive 24 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EV7Q> SAS enclosure 1, slot 13
    array 1 of 6 drives:
        drive 19 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EJLK> SAS enclosure 1, slot 0
        drive 31 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1DHJK> SAS enclosure 1, slot 6
        drive 18 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EJ8W> SAS enclosure 1, slot 2
        drive 26 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EKT9> SAS enclosure 1, slot 3
        drive 22 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1F3LT> SAS enclosure 1, slot 4
        drive 20 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EKYV> SAS enclosure 1, slot 5
    array 2 of 6 drives:
        drive 29 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EGBP> SAS enclosure 1, slot 1
        drive 30 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1F1W9> SAS enclosure 1, slot 7
        drive 21 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EN57> SAS enclosure 1, slot 8
        drive 27 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1E5DP> SAS enclosure 1, slot 9
        drive 28 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EJ13> SAS enclosure 1, slot 10
        drive 32 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1F3KK> SAS enclosure 1, slot 11
    volume mfid2 (419G) RAID-1 1M OPTIMAL <transaction log> spans:
        array 0
    volume mfid1 (2512G) RAID-10 1M OPTIMAL spans:
        array 1
        array 2
    global spare 25 (  419G) HOT SPARE <SEAGATE ST3450856SS HS0A serial=3QQ1G39G> SAS enclosure 1, slot 12


This is what the config looks like now:

mfi1 Configuration: 7 arrays, 2 volumes, 1 spares
    array 0 of 2 drives:
        drive 23 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EJ9N> SAS enclosure 1, slot 14
        drive 24 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EV7Q> SAS enclosure 1, slot 13
    array 1 of 2 drives:
        drive 19 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EJLK> SAS enclosure 1, slot 0
        drive 31 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1DHJK> SAS enclosure 1, slot 6
    array 2 of 2 drives:
        drive 29 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EGBP> SAS enclosure 1, slot 1
        drive 30 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1F1W9> SAS enclosure 1, slot 7
    array 3 of 2 drives:
        drive 18 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EJ8W> SAS enclosure 1, slot 2
        drive 21 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EN57> SAS enclosure 1, slot 8
    array 4 of 2 drives:
        drive 26 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EKT9> SAS enclosure 1, slot 3
        drive 27 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1E5DP> SAS enclosure 1, slot 9
    array 5 of 2 drives:
        drive 22 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1F3LT> SAS enclosure 1, slot 4
        drive 28 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EJ13> SAS enclosure 1, slot 10
    array 6 of 2 drives:
        drive 20 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1EKYV> SAS         drive 32 (  419G) ONLINE <SEAGATE ST3450856SS HS0A serial=3QQ1F3KK> SAS enclosure 1, slot 11
    volume mfid2 (419G) RAID-1 1M OPTIMAL <transaction log> spans:
        array 0
    volume mfid1 (2512G) RAID-10 1M OPTIMAL spans:
        array 1
        array 2
        array 3
        array 4
        array 5
        array 6
    global spare 25 (  419G) HOT SPARE <SEAGATE ST3450856SS HS0A serial=3QQ1G39G> SAS enclosure 1, slot 12

Ian

-- 
Ian Freislich