On 12/13/2010 05:11 AM, Sander wrote:
Gordan Bobic wrote (ao):
On 12/12/2010 17:24, Paddy Steed wrote:
In a few weeks parts for my new computer will be arriving. The storage
will be a 128GB SSD. A few weeks after that I will order three large
disks for a RAID array. I understand that BTRFS
On Mon, Dec 13, 2010 at 4:25 AM, Gordan Bobic wrote:
I suggest you back your opinion up with some hard data before making such
statements. Here's a quick test - make an ext2 fs and a btrfs on two similar
disk partitions (any disk, for the sake of the experiment it doesn't have to
be an ssd)
On 13/12/2010 14:33, Peter Harris wrote:
On Mon, Dec 13, 2010 at 4:25 AM, Gordan Bobic wrote:
I suggest you back your opinion up with some hard data before making such
statements. Here's a quick test - make an ext2 fs and a btrfs on two similar
disk partitions (any disk, for the sake of the
On Mon, Dec 13, 2010 at 3:25 AM, Gordan Bobic gor...@bobich.net wrote:
On 12/13/2010 05:11 AM, Sander wrote:
Gordan Bobic wrote (ao):
On 12/12/2010 17:24, Paddy Steed wrote:
In a few weeks parts for my new computer will be arriving. The storage
will be a 128GB SSD. A few weeks after that I
On 13/12/2010 15:17, cwillu wrote:
In a few weeks parts for my new computer will be arriving. The storage
will be a 128GB SSD. A few weeks after that I will order three large
disks for a RAID array. I understand that BTRFS RAID 5 support will be
available shortly. What is the best possible way
Thank you for all your replies.
On Mon, 2010-12-13 at 00:04 +, Gordan Bobic wrote:
On 12/12/2010 17:24, Paddy Steed wrote:
In a few weeks parts for my new computer will be arriving. The storage
will be a 128GB SSD. A few weeks after that I will order three large
disks for a RAID array.
On 13/12/2010 17:17, Paddy Steed wrote:
So, no-one has any idea's on how to implement the cache. Would making it
all swap work, does to OS cache files in swap?
No, it doesn't. I don't believe there are any plans to implement
hierarchical storage in BTRFS, but perhaps one of the developers
On Mon, Dec 13, 2010 at 05:17:51PM +, Paddy Steed wrote:
So, no-one has any idea's on how to implement the cache. Would making it
all swap work, does to OS cache files in swap?
Quite the opposite. Too many people have ideas for SSD-as-cache in Linux,
in non particular order:
— bcache
—
On 12/13/2010 01:20 PM, Tomasz Torcz wrote:
On Mon, Dec 13, 2010 at 05:17:51PM +, Paddy Steed wrote:
So, no-one has any idea's on how to implement the cache. Would making it
all swap work, does to OS cache files in swap?
Quite the opposite. Too many people have ideas for SSD-as-cache
In a few weeks parts for my new computer will be arriving. The storage
will be a 128GB SSD. A few weeks after that I will order three large
disks for a RAID array. I understand that BTRFS RAID 5 support will be
available shortly. What is the best possible way for me to get the
highest performance
On 12/12/2010 17:24, Paddy Steed wrote:
In a few weeks parts for my new computer will be arriving. The storage
will be a 128GB SSD. A few weeks after that I will order three large
disks for a RAID array. I understand that BTRFS RAID 5 support will be
available shortly. What is the best possible
Gordan Bobic wrote (ao):
On 12/12/2010 17:24, Paddy Steed wrote:
In a few weeks parts for my new computer will be arriving. The storage
will be a 128GB SSD. A few weeks after that I will order three large
disks for a RAID array. I understand that BTRFS RAID 5 support will be
available
On Thu, 11 Mar 2010 13:00:17 -0500
Chris Mason chris.ma...@oracle.com wrote:
On Thu, Mar 11, 2010 at 06:35:06PM +0100, Stephan von Krawczynski wrote:
On Thu, 11 Mar 2010 15:39:05 +0100
Sander san...@humilis.net wrote:
Stephan von Krawczynski wrote (ao):
Honestly I would just drop
On Saturday 13 March 2010 18:02:10 Stephan von Krawczynski wrote:
On Fri, 12 Mar 2010 17:00:08 +0100
Hubert Kario h...@qbs.com.pl wrote:
Even on true
spinning disks your assumption is wrong for relocated sectors.
Which we don't have to worry about because if the drive has less than 5
On Sat, Mar 13, 2010 at 05:43:59PM +0100, Stephan von Krawczynski wrote:
On Thu, 11 Mar 2010 13:00:17 -0500
Chris Mason chris.ma...@oracle.com wrote:
On Thu, Mar 11, 2010 at 06:35:06PM +0100, Stephan von Krawczynski wrote:
On Thu, 11 Mar 2010 15:39:05 +0100
Sander san...@humilis.net
On 03/13/2010 08:43 AM, Stephan von Krawczynski wrote:
- Nowadays: being a linux installation today chances are that the matrix has
you. Quite a lot of installations are virtualized. So your storage is a virtual
one either, which means it is likely being a fs buffer from the host system,
i.e.
On Fri, 12 Mar 2010 02:07:40 +0100
Hubert Kario h...@qbs.com.pl wrote:
[...]
If the FS were to be smart and know about the 256kb requirement, it
would do a read/modify/write cycle somewhere and then write the 4KB.
If all the free blocks have been TRIMmed, FS should pick a completely free
On Friday 12 March 2010 10:15:28 Stephan von Krawczynski wrote:
On Fri, 12 Mar 2010 02:07:40 +0100
Hubert Kario h...@qbs.com.pl wrote:
[...]
If the FS were to be smart and know about the 256kb requirement, it
would do a read/modify/write cycle somewhere and then write the 4KB.
If
On Wed, Mar 10, 2010 at 11:13 PM, Gordan Bobic gor...@bobich.net wrote:
Marcus Fritzsch wrote:
Hi there,
On Wed, Mar 10, 2010 at 8:49 PM, Gordan Bobic gor...@bobich.net wrote:
[...]
Are there similar optimizations available in BTRFS?
There is an SSD mount option available[1].
[1]
On Thursday 11 March 2010 08:38:53 Sander wrote:
Hello Gordan,
Gordan Bobic wrote (ao):
Mike Fedyk wrote:
On Wed, Mar 10, 2010 at 11:49 AM, Gordan Bobic gor...@bobich.net wrote:
Are there options available comparable to ext2/ext3 to help reduce
wear and improve performance?
With
On Thu, 11 Mar 2010 11:59:57 +0100
Hubert Kario h...@qbs.com.pl wrote:
On Thursday 11 March 2010 08:38:53 Sander wrote:
Hello Gordan,
Gordan Bobic wrote (ao):
Mike Fedyk wrote:
On Wed, Mar 10, 2010 at 11:49 AM, Gordan Bobic gor...@bobich.net wrote:
Are there options available
On Thu, 11 Mar 2010 08:38:53 +0100, Sander san...@humilis.net wrote:
Are there options available comparable to ext2/ext3 to help reduce
wear and improve performance?
With SSDs you don't have to worry about wear.
And if you believe that you clearly swallowed the marketing spiel hook
line and
On Thu, 11 Mar 2010 12:17:30 +
Gordan Bobic gor...@bobich.net wrote:
On Thu, 11 Mar 2010 12:31:03 +0100, Stephan von Krawczynski
sk...@ithnet.com wrote:
On Wed, Mar 10, 2010 at 11:49 AM, Gordan Bobic gor...@bobich.net
wrote:
Are there options available comparable to ext2/ext3 to
On Thu, 11 Mar 2010 13:59:09 +0100, Stephan von Krawczynski
sk...@ithnet.com wrote:
On Wed, Mar 10, 2010 at 11:49 AM, Gordan Bobic
gor...@bobich.net
wrote:
Are there options available comparable to ext2/ext3 to help
reduce
wear and improve performance?
With SSDs you
On Thursday 11 March 2010 14:20:23 Gordan Bobic wrote:
On Thu, 11 Mar 2010 13:59:09 +0100, Stephan von Krawczynski
sk...@ithnet.com wrote:
On Wed, Mar 10, 2010 at 11:49 AM, Gordan Bobic
gor...@bobich.net
wrote:
Are there options available comparable to ext2/ext3 to
On Wed, Mar 10, 2010 at 07:49:34PM +, Gordan Bobic wrote:
I'm looking to try BTRFS on a SSD, and I would like to know what SSD
optimizations it applies. Is there a comprehensive list of what ssd
mount option does? How are the blocks and metadata arranged? Are
there options available
Stephan von Krawczynski wrote (ao):
Honestly I would just drop the idea of an SSD option simply because the
vendors implement all kinds of neat strategies in their devices. So in the end
you cannot really tell if the option does something constructive and not
destructive in combination with a
On Thu, 11 Mar 2010 15:01:55 +0100
Hubert Kario h...@qbs.com.pl wrote:
[...]
The _SD_standard_ states that the media has to implement wear-leveling.
So any card with an SD logo implements it.
As I stated previously, the algorithms used in SD cards may not be as
advanced
as those in
Gordan Bobic wrote:
TRIM lets the OS tell the disk which blocks are not in use anymore, and
thus don't have to be copied during a rewrite of the blocks.
Wear-leveling is the SSD making sure all blocks are more or less equally
written to avoid continuous load on the same blocks.
And thus
On Thu, 11 Mar 2010 16:35:33 +0100, Stephan von Krawczynski
sk...@ithnet.com wrote:
Besides, why shouldn't we help the drive firmware by
- writing the data only in erase-block sizes
- trying to write blocks that are smaller than the erase-block in a way
that won't cross the erase-block
On Thu, 11 Mar 2010 14:42:40 +0100, Asdo a...@shiftmail.org wrote:
1- I think the SSD would rewrite once-written blocks to other locations,
so to reuse the same physical blocks for wear levelling. The
written-once blocks are very good candidates because their write-count
is 1
There are
On Thu, 11 Mar 2010 09:21:30 -0500, Chris Mason chris.ma...@oracle.com
wrote:
On Wed, Mar 10, 2010 at 07:49:34PM +, Gordan Bobic wrote:
I'm looking to try BTRFS on a SSD, and I would like to know what SSD
optimizations it applies. Is there a comprehensive list of what ssd
mount option does
On Thu, Mar 11, 2010 at 04:03:59PM +, Gordan Bobic wrote:
On Thu, 11 Mar 2010 16:35:33 +0100, Stephan von Krawczynski
sk...@ithnet.com wrote:
Besides, why shouldn't we help the drive firmware by
- writing the data only in erase-block sizes
- trying to write blocks that are smaller
Gordan == Gordan Bobic gor...@bobich.net writes:
Gordan I fully agree that it's important for wear leveling on flash
Gordan media, but from the security point of view, I think TRIM would
Gordan be a useful feature on all storage media. If the erased blocks
Gordan were trimmed it would provide a
On Thu, Mar 11, 2010 at 04:18:48PM +, Gordan Bobic wrote:
On Thu, 11 Mar 2010 09:21:30 -0500, Chris Mason chris.ma...@oracle.com
wrote:
On Wed, Mar 10, 2010 at 07:49:34PM +, Gordan Bobic wrote:
I'm looking to try BTRFS on a SSD, and I would like to know what SSD
optimizations
Gordan == Gordan Bobic gor...@bobich.net writes:
Gordan SD == SSD with an SD interface.
No, not really.
It is true that conceivably you could fit a sophisticated controller in
an SD card form factor. But fact is that takes up space which could
otherwise be used for flash. There may also be
On Thu, 11 Mar 2010 15:39:05 +0100
Sander san...@humilis.net wrote:
Stephan von Krawczynski wrote (ao):
Honestly I would just drop the idea of an SSD option simply because the
vendors implement all kinds of neat strategies in their devices. So in the
end
you cannot really tell if the
On Thu, Mar 11, 2010 at 06:35:06PM +0100, Stephan von Krawczynski wrote:
On Thu, 11 Mar 2010 15:39:05 +0100
Sander san...@humilis.net wrote:
Stephan von Krawczynski wrote (ao):
Honestly I would just drop the idea of an SSD option simply because the
vendors implement all kinds of neat
I'm looking to try BTRFS on a SSD, and I would like to know what SSD
optimizations it applies. Is there a comprehensive list of what ssd
mount option does? How are the blocks and metadata arranged? Are there
options available comparable to ext2/ext3 to help reduce wear and
improve performance
Hi there,
On Wed, Mar 10, 2010 at 8:49 PM, Gordan Bobic gor...@bobich.net wrote:
[...]
Are there similar optimizations available in BTRFS?
There is an SSD mount option available[1].
Cheers,
Marcus
[1] http://btrfs.wiki.kernel.org/index.php/Getting_started#Mount_Options
--
To unsubscribe from
On Wed, Mar 10, 2010 at 11:49 AM, Gordan Bobic gor...@bobich.net wrote:
I'm looking to try BTRFS on a SSD, and I would like to know what SSD
optimizations it applies. Is there a comprehensive list of what ssd mount
option does? How are the blocks and metadata arranged? Are there options
Marcus Fritzsch wrote:
Hi there,
On Wed, Mar 10, 2010 at 8:49 PM, Gordan Bobic gor...@bobich.net wrote:
[...]
Are there similar optimizations available in BTRFS?
There is an SSD mount option available[1].
[1] http://btrfs.wiki.kernel.org/index.php/Getting_started#Mount_Options
But what
Mike Fedyk wrote:
On Wed, Mar 10, 2010 at 11:49 AM, Gordan Bobic gor...@bobich.net wrote:
I'm looking to try BTRFS on a SSD, and I would like to know what SSD
optimizations it applies. Is there a comprehensive list of what ssd mount
option does? How are the blocks and metadata arranged
Hello Gordan,
Gordan Bobic wrote (ao):
Mike Fedyk wrote:
On Wed, Mar 10, 2010 at 11:49 AM, Gordan Bobic gor...@bobich.net wrote:
Are there options available comparable to ext2/ext3 to help reduce
wear and improve performance?
With SSDs you don't have to worry about wear.
And while I
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