With RAID-0, you'd get data striped equally across all (in this case,
both) the devices, up to the size of the second-largest one, at which
point it'll stop allocating space.
By stop allocating space I assume you mean it will return out of space
errors, even though there is technically 250GB
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I've been unable to find anything definitive about what happens if I use
RAID0 to join an SSD and HDD together with respect to performance
(latency, throughput). The future is obvious (hot data tracking, using
most appropriate device for the data,
On Wed, Jan 30, 2013 at 01:27:37AM -0800, Roger Binns wrote:
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I've been unable to find anything definitive about what happens if I use
RAID0 to join an SSD and HDD together with respect to performance
(latency, throughput). The future is obvious
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On 30/01/13 02:02, Hugo Mills wrote:
On Wed, Jan 30, 2013 at 01:27:37AM -0800, Roger Binns wrote:
In my specific case I have a 250GB SSD and a 500GB HDD, and about
250GB of files (constantly growing). One message I saw said that new
blocks are
Roger Binns wrote (ao):
I'm happy to wait till it is available. btrfs has been beneficial to
me in so many other respects (eg checksums, compression, online
everything, not having to deal with LVM and friends). I was just
hoping that joining an SSD and HDD would be somewhat worthwhile now
On Jan 30, 2013, at 3:02 AM, Hugo Mills h...@carfax.org.uk wrote:
That would be the case with single mode, not with RAID-0.
With RAID-0, you'd get data striped equally across all (in this
case, both) the devices, up to the size of the second-largest one, at
which point it'll stop
Hi,
On Wed, Jan 30, 2013 at 2:49 AM, Roger Binns rog...@rogerbinns.com wrote:
It looks like my choices are:
* RAID 0 and getting 500GB of usable space, with performance 50% of the
accesses at HDD levels and 50% at SSD levels
* Single and getting 750GB of usable space with performance and
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On 30/01/13 04:01, Sander wrote:
Do you know about bcache and EnhanceIO ?
Yes, but there are two reasons I don't use them. One is that the capacity
of your cache is not included in the filesystem - ie with a 250GB SSD and
500GB the filesystem
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On 30/01/13 11:10, Filipe Brandenburger wrote:
You could try something like -l=linear on md-raid or something
similar on LVM to build a 750GB volume
That would also require wiping the filesystems and starting again(*). One
of the joys of btrfs
