I'm convinced I need 3-disk RAID1 so I can lose 2 drives and keep
running. I'd also like to stripe for performance, resulting in
RAID10. It sounds like most hardware controllers do not support
6-disk RAID10 so ZFS looks very interesting.
Can I operate ZFS RAID without a hardware RAID controller?
>> Is the Gentoo Software RAID + LVM guide the best place for RAID
>> install info if I'm not using LVM and I'll have a hardware RAID
>> controller?
>
> Not ready to take the ZFS plunge? That would greatly reduce the complexity
> of RAID+LVM, since ZFS best practice is to set your hardware raid con
Am 17.09.2013 09:20, schrieb Grant:
Performance doesn't seem to be one of ZFS's strong points. Is it
considered suitable for a high-performance server?
A high performance server for what?
But you've already given yourself the answer: if high performance is
what you are aiming for it depends
On Tue, Sep 17, 2013 at 2:28 PM, Grant wrote:
>>> Is the Gentoo Software RAID + LVM guide the best place for RAID
>>> install info if I'm not using LVM and I'll have a hardware RAID
>>> controller?
>>
>> Not ready to take the ZFS plunge? That would greatly reduce the complexity
>> of RAID+LVM, sin
On Tue, Sep 17, 2013 at 2:20 PM, Grant wrote:
> I'm convinced I need 3-disk RAID1 so I can lose 2 drives and keep
> running. I'd also like to stripe for performance, resulting in
> RAID10. It sounds like most hardware controllers do not support
> 6-disk RAID10 so ZFS looks very interesting.
>
>
On 17/09/2013 10:05, Pandu Poluan wrote:
> On Tue, Sep 17, 2013 at 2:20 PM, Grant wrote:
>> I'm convinced I need 3-disk RAID1 so I can lose 2 drives and keep
>> running. I'd also like to stripe for performance, resulting in
>> RAID10. It sounds like most hardware controllers do not support
>> 6-
Hi,
I remember to have accidently started amarok via ssh on my notebook (wrong
console window), with DISPLAY on my desktop. This seems to have scrapped
phonon-config and/or pulseaudio config on both systems.
After having removed these files (.pulse/ and
.kde4/share/config/phonondevicesrc) on b
On Mon, 16 Sep 2013 21:23:50 -0400, gottl...@nyu.edu wrote:
> >> So I reinstalled cups but /etc/cups/cupd.conf was not changed and
> >> still has its old date and contents. The merge looks clean (output
> >> below)
> >
> > /etc/ is CONFIG_PROTECTed.
>
> This part I knew, but would have expec
On Tue, 17 Sep 2013 12:36:20 +0700, Pandu Poluan wrote:
> That said, if your kernel supports modules, it's a piece of cake to
> compile the ZFS modules on your own. @ryao has a zfs-overlay you can
> use to emerge ZFS as a module.
It's also in the main portage tree.
--
Neil Bothwick
Get your g
>> It looks like there are comprehensive ZFS Gentoo docs
>> (http://wiki.gentoo.org/wiki/ZFS) but can anyone tell me from the real
>> world about how much extra difficulty/complexity is added to
>> installation and ongoing administration when choosing ZFS over ext4?
>
> Very very minimal. So minima
>>> I'm convinced I need 3-disk RAID1 so I can lose 2 drives and keep
>>> running. I'd also like to stripe for performance, resulting in
>>> RAID10. It sounds like most hardware controllers do not support
>>> 6-disk RAID10 so ZFS looks very interesting.
>>>
>>> Can I operate ZFS RAID without a ha
Is the Gentoo Software RAID + LVM guide the best place for RAID
install info if I'm not using LVM and I'll have a hardware RAID
controller?
>>>
>>> Not ready to take the ZFS plunge? That would greatly reduce the complexity
>>> of RAID+LVM, since ZFS best practice is to set your hardw
Grant wrote:
> Performance doesn't seem to be one of ZFS's strong points. Is it
> considered suitable for a high-performance server?
ZFS is one of the fastest FS I am aware of (if not the fastest).
You need a sufficient amount of RAM to make the ARC useful.
The only problem I am aware with ZFS
Does anyone know how I get the "date"-extension into my gentoo-based
cyrus-imapd-server?
Stefan
On 2013-09-17 1:36 AM, Pandu Poluan wrote:
On Sun, Sep 15, 2013 at 6:10 PM, Grant wrote:
It sounds like ZFS isn't included in the mainline kernel. Is it on its way in?
Unlikely. There has been a discussion on that in this list, and there
is some concern that ZFS' license (CDDL) is not comp
On 2013-09-17 4:05 AM, Pandu Poluan wrote:
2. When comparing performance of 1 (one) drive, of course ZFS will
lose. But when you build a ZFS pool out of 3 pairs of mirrored drives,
throughput will increase significantly as ZFS has the ability to do
'load-balancing' among mirror-pairs (or, in ZFS
On 17/09/2013 11:49, Grant wrote:
> Is the Gentoo Software RAID + LVM guide the best place for RAID
> install info if I'm not using LVM and I'll have a hardware RAID
> controller?
Not ready to take the ZFS plunge? That would greatly reduce the complexity
of RAID+LVM, sinc
On 2013-09-17 3:20 AM, Grant wrote:
It sounds like most hardware controllers do not support
6-disk RAID10 so ZFS looks very interesting.
?? RAID 10 simply requires an even number of drives with a minimum of 4.
So, you certainly can have a 6 disk RAID10 - I've got a system with one
right now
On 09/17/2013 02:43 AM, Grant wrote:
>
> Is multi-mirroring (3-disk RAID1) support without RAID0 common in
> hardware RAID cards?
>
Nope. Not at my pay grade, anyway. The only ones I know of are the
Hewlett-Packard MSA/EVA, but they don't call it plain RAID1. They allow
you to create virtual dis
Grant gmail.com> writes:
> > jffnms is something I don't use myself, but it looks like the same class
> > of app as Nagios. Don't be fooled into choosing between munin and
> > nagios/jffnms - they are not the same thing, not even close. Use both.
thank Alan, I did not know about munin.
Grant,
Hello,
On Thu, 12 Sep 2013 06:57:15 +0200 Alan McKinnon
wrote:
> What I usually is download the sources by hand, run ./configure and
> see if the app directly supports pillow and take it from there. A fix
> usually just needs a few minor tweaks to the ebuild.
Sabayon has changed the ebuild, so
>> Is the Gentoo Software RAID + LVM guide the best place for RAID
>> install info if I'm not using LVM and I'll have a hardware RAID
>> controller?
>
> Not ready to take the ZFS plunge? That would greatly reduce the complexity
> of RAID+LVM, since ZFS best practice is to se
>> Is multi-mirroring (3-disk RAID1) support without RAID0 common in
>> hardware RAID cards?
>
> Nope. Not at my pay grade, anyway. The only ones I know of are the
> Hewlett-Packard MSA/EVA, but they don't call it plain RAID1. They allow
> you to create virtual disk groups, though, so you can mirro
>> It sounds like most hardware controllers do not support
>> 6-disk RAID10 so ZFS looks very interesting.
>
> ?? RAID 10 simply requires an even number of drives with a minimum of 4.
OK, there seems to be some disagreement on this. Michael?
- Grant
>> Performance doesn't seem to be one of ZFS's strong points. Is it
>> considered suitable for a high-performance server?
>
> ZFS is one of the fastest FS I am aware of (if not the fastest).
> You need a sufficient amount of RAM to make the ARC useful.
How much RAM is that?
- Grant
Grant wrote:
> >> Performance doesn't seem to be one of ZFS's strong points. Is it
> >> considered suitable for a high-performance server?
> >
> > ZFS is one of the fastest FS I am aware of (if not the fastest).
> > You need a sufficient amount of RAM to make the ARC useful.
>
> How much RAM is
On 09/17/2013 09:21 AM, Grant wrote:
>>> It sounds like most hardware controllers do not support
>>> 6-disk RAID10 so ZFS looks very interesting.
>>
>> ?? RAID 10 simply requires an even number of drives with a minimum of 4.
>
> OK, there seems to be some disagreement on this. Michael?
>
Any co
On 17/09/2013 15:11, Grant wrote:
>>> Is the Gentoo Software RAID + LVM guide the best place for RAID
>>> install info if I'm not using LVM and I'll have a hardware RAID
>>> controller?
>>
>> Not ready to take the ZFS plunge? That would greatly reduce the
>> complexity
On 09/17/2013 11:40 AM, Tanstaafl wrote:
> On 2013-09-17 11:18 AM, Michael Orlitzky wrote:
>> Any controller that claims RAID10 on a server with 6 drive bays should
>> be able to put all six drives in an array. But you'll get a three-way
>> stripe (better performance) instead of a three-way mirror
On Tue, Sep 17 2013, Neil Bothwick wrote:
> On Mon, 16 Sep 2013 21:23:50 -0400, gottl...@nyu.edu wrote:
>
>> >> So I reinstalled cups but /etc/cups/cupd.conf was not changed and
>> >> still has its old date and contents. The merge looks clean (output
>> >> below)
>> >
>> > /etc/ is CONFIG_PROTE
On 09/17/2013 01:00 PM, Tanstaafl wrote:
>
> But not 6-drive RAID w/ hot spare... ;) Anyone who can't afford to add a
> single additional drive for the piece of mind has no business buying the
> RAID card to begin with...
Most of our servers only come with 6 drive bays -- that's why I have
this
On 2013-09-17 12:34 PM, Michael Orlitzky wrote:
For maximum fault tolerance, what you really want is,
A B
A B
A B
but, like I said, it's hard to find in hardware. The standard I linked
to calls both of these "RAID10", thus the confusion.
Ok, I see where my confusion came in... when
On 17/09/2013 15:22, Grant wrote:
>>> Performance doesn't seem to be one of ZFS's strong points. Is it
>>> considered suitable for a high-performance server?
>>
>> ZFS is one of the fastest FS I am aware of (if not the fastest).
>> You need a sufficient amount of RAM to make the ARC useful.
>
> H
On 17/09/2013 15:13, Grant wrote:
>>> Is multi-mirroring (3-disk RAID1) support without RAID0 common in
>>> hardware RAID cards?
>>
>> Nope. Not at my pay grade, anyway. The only ones I know of are the
>> Hewlett-Packard MSA/EVA, but they don't call it plain RAID1. They allow
>> you to create virtu
Pandu Poluan wrote:
> On Tue, Sep 17, 2013 at 2:20 PM, Grant wrote:
> > I'm convinced I need 3-disk RAID1 so I can lose 2 drives and keep
> > running. I'd also like to stripe for performance, resulting in
> > RAID10. It sounds like most hardware controllers do not support
> > 6-disk RAID10 so
Volker Armin Hemmann wrote:
> Am 17.09.2013 09:20, schrieb Grant:
> > I'm convinced I need 3-disk RAID1 so I can lose 2 drives and keep
> > running. I'd also like to stripe for performance, resulting in
> > RAID10. It sounds like most hardware controllers do not support
> > 6-disk RAID10 so ZFS
Am 13.09.2013 19:54, schrieb Stefan G. Weichinger:
> Am 12.09.2013 16:55, schrieb Yohan Pereira:
>> On 12/09/13 at 09:21am, Stefan G. Weichinger wrote:
>>> ps: anyone using mosh already? Experiences? opinions?
Could someone tell me just from a general point of view if I could just
*try* to copy m
Am 17.09.2013 09:20, schrieb Grant:
> I'm convinced I need 3-disk RAID1 so I can lose 2 drives and keep
> running. I'd also like to stripe for performance, resulting in
> RAID10. It sounds like most hardware controllers do not support
> 6-disk RAID10 so ZFS looks very interesting.
>
> Can I opera
On 2013-09-17 2:00 PM, Volker Armin Hemmann
wrote:
use ECC ram. Lots of it. 16GB DDR3 1600 ECC ram cost you less than 170€.
And it is worth it. ZFS showed me just how many silent corruptions can
happen on a 'stable' system. Errors never seen neither detected thanks
to using 'standard' ram.
turn
On 2013-09-17 11:18 AM, Michael Orlitzky wrote:
Any controller that claims RAID10 on a server with 6 drive bays should
be able to put all six drives in an array. But you'll get a three-way
stripe (better performance) instead of a three-way mirror (better fault
tolerance).
So,
A B C
A B C
Am 17.09.2013 20:11, schrieb cov...@ccs.covici.com:
> Volker Armin Hemmann wrote:
>
>> Am 17.09.2013 09:20, schrieb Grant:
>>> I'm convinced I need 3-disk RAID1 so I can lose 2 drives and keep
>>> running. I'd also like to stripe for performance, resulting in
>>> RAID10. It sounds like most hard
Am 17.09.2013 20:11, schrieb Tanstaafl:
> On 2013-09-17 2:00 PM, Volker Armin Hemmann
> wrote:
>> use ECC ram. Lots of it. 16GB DDR3 1600 ECC ram cost you less than 170€.
>> And it is worth it. ZFS showed me just how many silent corruptions can
>> happen on a 'stable' system. Errors never seen nei
Am 17.09.2013 19:34, schrieb Tanstaafl:
> On 2013-09-17 1:07 PM, Michael Orlitzky wrote:
>> On 09/17/2013 01:00 PM, Tanstaafl wrote:
>>>
>>> But not 6-drive RAID w/ hot spare... ;) Anyone who can't afford to add a
>>> single additional drive for the piece of mind has no business buying the
>>> RAI
On 2013-09-17 1:07 PM, Michael Orlitzky wrote:
On 09/17/2013 01:00 PM, Tanstaafl wrote:
But not 6-drive RAID w/ hot spare... ;) Anyone who can't afford to add a
single additional drive for the piece of mind has no business buying the
RAID card to begin with...
Most of our servers only come w
>>> Any controller that claims RAID10 on a server with 6 drive bays should
>>> be able to put all six drives in an array. But you'll get a three-way
>>> stripe (better performance) instead of a three-way mirror (better fault
>>> tolerance).
>
> I forget why I even brought it up. I think it was in o
Performance doesn't seem to be one of ZFS's strong points. Is it
considered suitable for a high-performance server?
>>>
>>> ZFS is one of the fastest FS I am aware of (if not the fastest).
>>> You need a sufficient amount of RAM to make the ARC useful.
>>
>> How much RAM is that?
>
> 1G
> I have to set up a server w/ 8x 1TB in about 2 weeks and consider ZFS as
> well, at least for data. So root-fs would go onto 2x 1TB hdds with
> conventional partitioning and something like ext4.
Is a layout like this with the data on ZFS and the root-fs on ext4 a
better choice than ZFS all aroun
>> Besides performance, are there any drawbacks to ZFS compared to ext4?
>>
> do yourself three favours:
>
> use ECC ram. Lots of it. 16GB DDR3 1600 ECC ram cost you less than 170€.
> And it is worth it. ZFS showed me just how many silent corruptions can
> happen on a 'stable' system. Errors never
Besides performance, are there any drawbacks to ZFS compared to ext4?
How about hardened? Does ZFS have any problems interacting with
grsecurity or a hardened profile?
- Grant
On Tue, Sep 17, 2013 at 02:11:33PM -0400, Tanstaafl wrote:
>
> Is there a good place to read about these kinds of tuning parameters?
Just wondering if anyone experienced running ZFS on Gentoo finds this wiki
article worthy of use: http://wiki.gentoo.org/wiki/ZFS
--
Happy Penguin Computers
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