Hi Cedric,
Sorry for the delayed reply, SATA vs SAS is a subject many ZFS sysadmins
(including myself until recently) are completely ignorant about. I'm still not
super knowledgable about STP, but here goes. Normal SAS devices communicate
with your controller via Serial SCSI Protocol (SSP), wh
Hi folks, (Long time no post...)
Only starting to get into this one, so apologies if I'm light on detail,
but...
I have a shiny SSD I'm using to help make some VirtualBox stuff I'm
doing go fast.
I have a 240GB Intel 520 series jobbie. Nice.
I chopped into a few slices - p0 (partition ta
I have seen some drives not be recognized on a hot plug, but cfgadm seemed to
always fix that.
I don't recall a cold boot not recognizing the drives. Does the bios boot of
the card show all of the drives connected?
I did not update the firmware in the cards that I bought.
Gregg
On Nov 19, 20
Hi Nathan,
You've misunderstood how the Zil works and why it reduces write latency for
synchronous writes.
Since you've partitioned a single SSD into two silces, one as pool storage and
one as Zil for that pool, all sync writes will be 2X amplified. There's no way
around it. ZFS will write to
Hi Jerry,
Couple of things that might help you troubleshoot your Intel SASUC8I HBA:
1. Are you seeing all the 8 devices in the BIOS for the card?
2. If yes, do other operating systems (say a Linux LiveCD) see all the disks
too?
3. Is there any difference between the disks (e.g. four 2TB Seagate
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of Nathan Kroenert
>
> I chopped into a few slices - p0 (partition table), p1 128GB, p2 60gb.
>
> As part of my work, I have used it both as a RAW device (cxtxdxp1) and
> wrapped partition 1 with
On Wed, Nov 21, 2012 at 12:07 AM, Edward Ned Harvey
(opensolarisisdeadlongliveopensolaris)
wrote:
> Why are you parititoning, then creating zpool,
The common case it's often because they use the disk for something
else as well (e.g. OS), not only for zfs
> and then creating zvol?
Because it ena
Hi folks,
some extra thoughts:
1. Don't question why. :) I'm playing and observing, so I ultimately
know and understand the best way to do things! heh.
2. In fairness, asking why is entirely valid. ;) I'm not doing things to
best practice just yet - I wanted the best performance for my VM's,
On 2012-11-21 03:21, nathan wrote:
Overall, the pain of the doubling of bandwidth requirements seems like a
big downer for *my* configuration, as I have just the one SSD, but I'll
persist and see what I can get out of it.
I might also speculate that for each rewritten block of userdata in
the V
