On Wed, Jun 23, 2010 at 2:43 PM, Jeff Bacon wrote:
>> >> Swapping the 9211-4i for a MegaRAID ELP (mega_sas) improves
>> >> performance by 30-40% instantly and there are no hangs anymore so
> I'm
>> >> guessing it's something related to the mpt_sas driver.
>
> Wait. The mpt_sas driver by defaul
This forum has been tremendously helpful, but I decided to get some help from a
Solaris Guru install Solaris for a backup application.
I do not want to disturb the flow of this forum, but where can I post to get
some paid help on this forum? We are located in the San Francisco Bay Area. Any
hel
On Jun 23, 2010, at 1:48 PM, Robert Milkowski wrote:
>
> 128GB.
>
> Does it mean that for dataset used for databases and similar environments
> where basically all blocks have fixed size and there is no other data all
> parity information will end-up on one (z1) or two (z2) specific disks?
W
> Does it mean that for dataset used for databases and similar environments
> where basically all blocks have fixed size and there is no other data all
> parity information will end-up on one (z1) or two (z2) specific disks?
No. There are always smaller writes to metadata that will distribute pa
128GB.
Does it mean that for dataset used for databases and similar
environments where basically all blocks have fixed size and there is no
other data all parity information will end-up on one (z1) or two (z2)
specific disks?
On 23/06/2010 17:51, Adam Leventhal wrote:
Hey Robert,
How bi
> I'm using iozone to get some performance numbers and I/O hangs when
> it's doing the writing phase.
>
> This pool has:
>
> 18 x 2TB SAS disks as 9 data mirrors
> 2 x 32GB X-25E as log mirror
> 1 x 160GB X-160M as cache
>
> iostat shows "2" I/O operations active and SSDs at 100% busy when
> it'
Gack, that's the same message we're seeing with the mpt controller with
SATA drives. I've never seen it with a SAS drive before .
Has anyone noticed a trend of 2TB SATA drives en-masse not working well
with the LSI SASx28/x36 expander chips? I can seemingly reproduce it on
demand - hook > 4 2TB d
Cindy Swearingen wrote:
On 06/23/10 10:40, Evan Layton wrote:
On 6/23/10 4:29 AM, Brian Nitz wrote:
I saw a problem while upgrading from build 140 to 141 where beadm
activate {build141BE} failed because installgrub failed:
# BE_PRINT_ERR=true beadm activate opensolarismigi-4
be_do_installgru
On 06/23/10 10:40, Evan Layton wrote:
On 6/23/10 4:29 AM, Brian Nitz wrote:
I saw a problem while upgrading from build 140 to 141 where beadm
activate {build141BE} failed because installgrub failed:
# BE_PRINT_ERR=true beadm activate opensolarismigi-4
be_do_installgrub: installgrub failed for
Hey Robert,
How big of a file are you making? RAID-Z does not explicitly do the parity
distribution that RAID-5 does. Instead, it relies on non-uniform stripe widths
to distribute IOPS.
Adam
On Jun 18, 2010, at 7:26 AM, Robert Milkowski wrote:
> Hi,
>
>
> zpool create test raidz c0t0d0 c1t0
On 6/23/10 4:29 AM, Brian Nitz wrote:
I saw a problem while upgrading from build 140 to 141 where beadm
activate {build141BE} failed because installgrub failed:
# BE_PRINT_ERR=true beadm activate opensolarismigi-4
be_do_installgrub: installgrub failed for device c5t0d0s0.
Unable to activate open
Reaching into the dusty regions of my brain, I seem to recall that since RAIDz
does not work like a traditional RAID 5, particularly because of variably sized
stripes, that the data may not hit all of the disks, but it will always be
redundant.
I apologize for not having a reference for this a
Look again at how XenServer does storage. I think you will find it already has
a solution, both for iSCSI and NFS.
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On Wed, Jun 23, 2010 at 10:14 AM, Jeff Bacon wrote:
>> > Have I missed any changes/updates in the situation?
>>
>> I'm been getting very bad performance out of a LSI 9211-4i card
>> (mpt_sas) with Seagate Constellation 2TB SAS disks, SM SC846E1 and
>> Intel X-25E/M SSDs. Long story short, I/O will
> > Have I missed any changes/updates in the situation?
>
> I'm been getting very bad performance out of a LSI 9211-4i card
> (mpt_sas) with Seagate Constellation 2TB SAS disks, SM SC846E1 and
> Intel X-25E/M SSDs. Long story short, I/O will hang for over 1 minute
> at random under heavy load.
Hm
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