On 11/19/13, 12:12 AM, deadhorseconsulting wrote:
In theory (going by the man page and available documentation, not 100%
clear) does the following command indeed actually work as advertised
and specify how metadata should be placed and kept only on the
devices specified after the -m flag?
On Tue, Nov 19, 2013 at 11:16:58PM +, Duncan wrote:
Hugo Mills posted on Tue, 19 Nov 2013 09:06:02 + as excerpted:
This will happen with RAID-10. The allocator will write stripes as wide
as it can: in this case, the first stripes will run across all 8
devices, until the SSDs are
On Nov 19, 2013, at 11:35 PM, Martin m_bt...@ml1.co.uk wrote:
On 19/11/13 23:16, Duncan wrote:
So we have:
1) raid1 is exactly two copies of data, paired devices.
2) raid0 is a stripe exactly two devices wide (reinforced by to read a
stripe takes only two devices), so again paired
On Wed, 20 Nov 2013, Chris Murphy li...@colorremedies.com wrote:
Hot spares are worse than useless. Especially for raid10. The drive takes
up space doing nothing but suck power, rather than adding space or
performance. Somehow this idea comes from cheap companies who seem to
think their data
On Wed, Nov 20, 2013 at 04:43:57PM +, Duncan wrote:
Hugo Mills posted on Wed, 20 Nov 2013 08:09:58 + as excerpted:
RAID-0: min 2 devices
RAID-10: min 4 devices
RAID-5: min 2 devices (I think)
RAID-6: min 3 devices (I think)
RAID-5 should be 3-device minimum (each stripe
Hugo Mills posted on Wed, 20 Nov 2013 16:52:47 + as excerpted:
Perhaps it's time I get that wiki account and edit some of this stuff
myself...
Do check the assumptions first. :)
Of course. =:^)
--
Duncan - List replies preferred. No HTML msgs.
Every nonfree program has a lord, a
On Mon, Nov 18, 2013 at 11:12:03PM -0600, deadhorseconsulting wrote:
In theory (going by the man page and available documentation, not 100%
clear) does the following command indeed actually work as advertised
and specify how metadata should be placed and kept only on the
devices specified
Interesting, this confirms what I was observing.
Given the wording in man pages for -m and -d which states Specify
how the metadata or data must be spanned across the devices
specified.
I took devices specified to literally mean the devices specified
after the according switch.
- DHC
On Tue,
deadhorseconsulting posted on Tue, 19 Nov 2013 13:24:01 -0600 as
excerpted:
Interesting, this confirms what I was observing.
Given the wording in man pages for -m and -d which states Specify
how the metadata or data must be spanned across the devices specified.
I took devices specified to
Hugo Mills posted on Tue, 19 Nov 2013 09:06:02 + as excerpted:
This will happen with RAID-10. The allocator will write stripes as wide
as it can: in this case, the first stripes will run across all 8
devices, until the SSDs are full, and then will write across the
remaining 4 devices.
On 19/11/13 23:16, Duncan wrote:
So we have:
1) raid1 is exactly two copies of data, paired devices.
2) raid0 is a stripe exactly two devices wide (reinforced by to read a
stripe takes only two devices), so again paired devices.
Which is fine for some occasions and a very good start
On 19/11/13 19:24, deadhorseconsulting wrote:
Interesting, this confirms what I was observing.
Given the wording in man pages for -m and -d which states Specify
how the metadata or data must be spanned across the devices
specified.
I took devices specified to literally mean the devices
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