Steinar,
On 6/1/07 2:35 PM, "Steinar H. Gunderson" <[EMAIL PROTECTED]> wrote:
> Either do your md discovery in userspace via mdadm (your distribution can
> probably help you with this), or simply use the raid10 module instead of
> building raid1+0 yourself.
I found md raid10 to be *very* slow co
> On Fri, Jun 01, 2007 at 10:57:56AM -0700, Craig James wrote:
> > The Linux kernel doesn't properly detect my software RAID1+0 when I boot
> > up. It detects the two RAID1 arrays, the partitions of which are marked
> > properly. But it can't find the RAID0 on top of that, because there's no
>
On Fri, Jun 01, 2007 at 10:57:56AM -0700, Craig James wrote:
> The Linux kernel doesn't properly detect my software RAID1+0 when I boot
> up. It detects the two RAID1 arrays, the partitions of which are marked
> properly. But it can't find the RAID0 on top of that, because there's no
> corresp
Dimitri,
LVM is great, one thing to watch out for: it is very slow compared to pure
md. That will only matter in practice if you want to exceed 1GB/s of
sequential I/O bandwidth.
- Luke
On 6/1/07 11:51 AM, "Dimitri" <[EMAIL PROTECTED]> wrote:
> Craig,
>
> to make things working properly here
Craig,
to make things working properly here you need to create a config file
keeping both raid1 and raid0 information (/etc/mdadm/mdadm.conf).
However if your root filesystem is corrupted, or you loose this file,
or move disks somewhere else - you are back to the same initial issue
:))
So, the s
Apologies for a somewhat off-topic question, but...
The Linux kernel doesn't properly detect my software RAID1+0 when I boot up.
It detects the two RAID1 arrays, the partitions of which are marked properly.
But it can't find the RAID0 on top of that, because there's no corresponding
device t
On Jun 1, 2007, at 11:48 , Tyler Durden wrote:
I'm having some problems in performance in a simple select count(id)
from
Unrestricted count() (i.e., no WHERE clause) will perform a
sequential scan. If you're looking for faster ways to store table row
count information, please search t
Tyler Durden wrote:
Hi,
I'm having some problems in performance in a simple select count(id)
from I have 700 000 records in one table, and when I do:
# explain select (id) from table_name;
-[ RECORD 1
]
QUERY PLAN | Seq Scan on
Hi,
I'm having some problems in performance in a simple select count(id)
from I have 700 000 records in one table, and when I do:
# explain select (id) from table_name;
-[ RECORD 1 ]
QUERY PLAN | Seq Scan on table_name (cost=0.0
