On 07/23/11 04:57, Michael DeMan wrote:
Generally performance is going to pretty bad as well - USB sticks are
not made to be written too rapidly. They are entirely different animals
than SSDs. I would not be surprised (but would be curious to know if you
still move forward on this) that you will
+1 on the below, and in addition...
...compact flash, like off of USB sticks is not designed to deal with very many
writes to it. Commonly it is used to store a bootable image that maybe once a
year will have an upgrade on it.
Basically, trying to use those devices for a ZIL, even they are
On Sun, Jul 17, 2011 at 12:13 PM, Edward Ned Harvey
opensolarisisdeadlongliveopensola...@nedharvey.com wrote:
Actually, you can't do that. You can't make a vdev from other vdev's, and
when it comes to striping and mirroring your only choice is to do it the
right way.
If you were REALLY
Ok, so, taking 2 300Gb disks, and 2 500Gb disks, and creating an 800Gb
mirrored striped thing is sounding like a bad idea... what about just
creating a pool of all disks, without using mirrors? I seen something called
copies, which if i am reading correctly, will make sure a number of copies
of a
On Mon, Jul 18, 2011 at 3:28 PM, Tiernan OToole lsmart...@gmail.com wrote:
Ok, so, taking 2 300Gb disks, and 2 500Gb disks, and creating an 800Gb
mirrored striped thing is sounding like a bad idea... what about just
creating a pool of all disks, without using mirrors? I seen something called
On Mon, Jul 18, 2011 at 1:20 PM, Brandon High bh...@freaks.com wrote:
On Sun, Jul 17, 2011 at 12:13 PM, Edward Ned Harvey
opensolarisisdeadlongliveopensola...@nedharvey.com wrote:
Actually, you can't do that. You can't make a vdev from other vdev's, and
when it comes to striping and
2011/7/15 Eugen Leitl eu...@leitl.org:
Speaking of which, is there a point in using an eSATA flash stick?
If yes, which?
It depends on the drive off course, you'll have to look up benchmark
results - but there are eSata sticks out there that are more or less
built to Perform (as opposed to
If using two mirrors, you'll end up with a badly balanced pool. As it was, and
possibly is, this will lead to a performance penalty when one VDEV is full (the
300GB VDEV). This write performance has reportedly been fixed in Illumos, but I
don't know about S11ex. For OpenIndiana/Nexenta, the fix
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Jim Klimov
if the OP were so inclined,
he could craft a couple of striped pools (300+500) and
then make a ZFS pool over these two.
Actually, you can't do that. You can't make a vdev from
2011-07-17 23:13, Edward Ned Harvey пишет:
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Jim Klimov
if the OP were so inclined,
he could craft a couple of striped pools (300+500) and
then make a ZFS pool over these two.
Actually, you can't
Well, not knowing a lot about these, but if the flash stick is based on SSD,
then it might work well, but if its just a standard USB key rebundled as a
eSATA disk, maybe not...
On Fri, Jul 15, 2011 at 5:54 PM, Eugen Leitl eu...@leitl.org wrote:
On Fri, Jul 15, 2011 at 04:21:13PM +, Tiernan
Thanks for the info. need to rebuild my machine and ZFS pool kind of new
to this and realized i built it as a stripe, not a mirror... also, want to
add extra disks...
As a follow up question:
I have 2 500Gb internal drives and 2 300Gb USB drives. If i where to create
a 2 pools, a 300Gb and a
Tiernan,
Depending on how you have created your current pool, you *may* be able to add
the mirroring without rebuilding it. Each disk in the stripe can have a second
disk of equal size attached to it to form a mirrored component, or vdev. So if
your pool has 2 500GB drives, attach another 500GB
From: Tiernan OToole [mailto:lsmart...@gmail.com]
Sent: Saturday, July 16, 2011 7:46 AM
I have 2 500Gb internal drives and 2 300Gb USB drives. If i where to
create a 2
pools, a 300Gb and a 500Gb in each, and then mirror over them, would that
work? is it even posible? or what would you
2011-07-16 15:46, Tiernan OToole ?:
Thanks for the info. need to rebuild my machine and ZFS pool kind
of new to this and realized i built it as a stripe, not a mirror...
also, want to add extra disks...
As a follow up question:
I have 2 500Gb internal drives and 2 300Gb USB drives.
So, i like the sound of that, but the box is a very frankinbox like... it
has 2 SATA ports, one used for the boot drive, one for one of the 500s...
the second 500Gb is IDE. The 2 USB drives both internally are SATA, so
pulling one and plugging it internally wont work that well... but thats for
the
thats not a typo... I was thinking 2 pools, 800gb each, and mirrored...
think i should mess around with this setup a bit more and see what i can get
working... might work better if i just move them into a new enclosure... we
see what happens...
Thanks for the info on the USB drives... if the ZIL
2011-07-16 18:48, Tiernan OToole пишет:
thats not a typo... I was thinking 2 pools, 800gb each, and
mirrored... think i should mess around with this setup a bit more and
see what i can get working... might work better if i just move them
into a new enclosure... we see what happens...
Well,
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Jim Klimov
Well, in terms of mirroring over stripes, if any component of any
stripe
breaks,
the whole half of the mirror is degraded. If another drive from another
half
also breaks,
This might be a stupid question, but here goes... Would adding, say, 4 4 or 8gb
usb keys as a zil make enough of a difference for writes on an iscsi shared
vol?
I am finding reads are not too bad (40is mb/s over gige on 2 500gb drives
stripped) but writes top out at about 10 and drop a lot
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Tiernan OToole
This might be a stupid question, but here goes... Would adding, say, 4 4
or
8gb usb keys as a zil make enough of a difference for writes on an iscsi
shared
vol?
I am
On Fri, Jul 15, 2011 at 04:21:13PM +, Tiernan OToole wrote:
This might be a stupid question, but here goes... Would adding, say, 4 4 or
8gb usb keys as a zil make enough of a difference for writes on an iscsi
shared vol?
I am finding reads are not too bad (40is mb/s over gige on 2
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