On Mon, Mar 05, 2012 at 06:14:04AM +, David Holland wrote:
The problem with that scheme is that you rewrite everything to the
flash over and over again anytime something changes, which is going to
generate vastly more write cycles than just using a normal fs.
This scheme doesn't write
On Mon, Mar 05, 2012 at 01:12:43PM -0600, David Young wrote:
On Mon, Mar 05, 2012 at 06:14:04AM +, David Holland wrote:
The problem with that scheme is that you rewrite everything to the
flash over and over again anytime something changes, which is going to
generate vastly more write
On Wed, Feb 29, 2012 at 06:45:41PM -0600, David Young wrote:
Oh, my mistake, since there was concern about filesystem type I
thought you were talking about raw flash, but apparently CompactFlash
is not raw flash, same as USB sticks aren't.
In that case, just use wapbl.
On Thu, Feb 23, 2012 at 08:04:01PM -0500, Thor Lancelot Simon wrote:
On Fri, Feb 24, 2012 at 12:45:32AM +, David Holland wrote:
On Thu, Feb 23, 2012 at 11:20:18PM +, David Holland wrote:
Is CHFS really suitable for CompactFlash? Is LFS even usable?
No
I
On Tue, Feb 28, 2012 at 08:12:03AM +0100, Adam Hamsik wrote:
I can help with both zfs and ext3. If requirement for your thesis is to
design and implement something new then implementing DRBD like network raid
on top of device-mapper would be amazing. [1], [2]
A DRDB-like functionality is
On Feb,Tuesday 28 2012, at 9:29 AM, Manuel Bouyer wrote:
On Tue, Feb 28, 2012 at 08:12:03AM +0100, Adam Hamsik wrote:
I can help with both zfs and ext3. If requirement for your thesis is to
design and implement something new then implementing DRBD like network raid
on top of device-mapper
I can help with both zfs and ext3. If requirement for your thesis is
to design and implement something new then implementing DRBD like
network raid on top of device-mapper would be amazing. [1], [2]
It is not required to do something new (awkward, I know). But there
is no reason, not to do so.
A DRDB-like functionality is something we need. It could even be a
gsoc project ...
I thought about that too. I decided that gsoc + the thesis is too much.
I'm to busy to have to start in April, and it's impossible to stick to
the given deadlines.
Thank you anyway!
Manuel
As it seems, implementing the snapshot feature does not really pay off.
Other projects seem to be much more rewarding for me.
An attractive alternative, is the ext3 journaling feature. It seems to
be an appropriate amount of work, even more interesting and much more
useful.
Is there anybody
In article 4f4c09c6.3040...@bsdstammtisch.at,
Manuel Wiesinger man...@bsdstammtisch.at wrote:
As it seems, implementing the snapshot feature does not really pay off.
Other projects seem to be much more rewarding for me.
An attractive alternative, is the ext3 journaling feature. It seems to
be
No, I don't think anyone is. Even better, how about getting zfs in a
working state?
Hrm... I don't have enough experience with zfs to feel confident with
it. But I consider it.
I think you mean halves the write rate.
--- On Thu, 2/23/12, Thor Lancelot Simon t...@panix.com wrote:
From: Thor Lancelot Simon t...@panix.com
Subject: Re: Snapshots in tmpfs
To: David Holland dholland-t...@netbsd.org
Cc: tech-kern@netbsd.org
Date: Thursday, February 23, 2012, 5:04 PM
On Fri
On Fri, Feb 24, 2012 at 12:45:32AM +, David Holland wrote:
On Thu, Feb 23, 2012 at 11:20:18PM +, David Holland wrote:
Is CHFS really suitable for CompactFlash? Is LFS even usable?
No
I thought the whole point of chfs was to be able to operate on raw
flash devices
On Thu, Feb 23, 2012 at 07:58:11AM +, David Holland wrote:
On Wed, Feb 22, 2012 at 08:17:15AM -0600, David Young wrote:
On Wed, Feb 22, 2012 at 01:42:45PM +0100, Manuel Wiesinger wrote:
*)
What is it good for? The only practical use I can imagine are
backups on thin clients,
On 2/23/2012 7:34 PM, David Young wrote:
On Thu, Feb 23, 2012 at 07:58:11AM +, David Holland wrote:
On Wed, Feb 22, 2012 at 08:17:15AM -0600, David Young wrote:
On Wed, Feb 22, 2012 at 01:42:45PM +0100, Manuel Wiesinger wrote:
*)
What is it good for? The only practical use I can
On Feb 22, 2012, at 1:52 PM, Martin Husemann wrote:
Note that we already have file system snapshots for ffs file systems,
see fss(4). They are used for backup purposes (atomically create a snapshot,
while the file system is busy, then backup the now quiet snapshot) - among
others.
Right --
On Thu, Feb 23, 2012 at 08:07:50PM +0100, Adam Hoka wrote:
Is CHFS really suitable for CompactFlash? Is LFS even usable?
No
I thought the whole point of chfs was to be able to operate on raw
flash devices that don't have their own flash translation layer.
and no.
Do you have any
On Thu, Feb 23, 2012 at 11:20:18PM +, David Holland wrote:
Is CHFS really suitable for CompactFlash? Is LFS even usable?
No
I thought the whole point of chfs was to be able to operate on raw
flash devices that don't have their own flash translation layer.
Oh, my mistake,
On Fri, Feb 24, 2012 at 12:45:32AM +, David Holland wrote:
On Thu, Feb 23, 2012 at 11:20:18PM +, David Holland wrote:
Is CHFS really suitable for CompactFlash? Is LFS even usable?
No
I thought the whole point of chfs was to be able to operate on raw
flash devices
On Thu, Feb 23, 2012 at 08:04:01PM -0500, Thor Lancelot Simon wrote:
Is CHFS really suitable for CompactFlash? Is LFS even usable?
No
I thought the whole point of chfs was to be able to operate on raw
flash devices that don't have their own flash translation layer.
Note that we already have file system snapshots for ffs file systems,
see fss(4). They are used for backup purposes (atomically create a snapshot,
while the file system is busy, then backup the now quiet snapshot) - among
others.
*)
What is it good for? The only practical use I can imagine are
Another possible thing to do (instead) would be to look at Coda, and
consider something like porting Coda to use FUSE instead of a homegrown
(pre-FUSE, to be fair) kernel module. A bigger challenge is to separate
the write-back caching from the upstream server protocol, so that one
could use
On Wed, Feb 22, 2012 at 01:42:45PM +0100, Manuel Wiesinger wrote:
*)
What is it good for? The only practical use I can imagine are
backups on thin clients, which operate without a hard disk. But this
is clearly far-fetched, in my eyes.
It's good for writing checkpoints of a tmpfs to
On Wed, Feb 22, 2012 at 08:17:15AM -0600, David Young wrote:
On Wed, Feb 22, 2012 at 01:42:45PM +0100, Manuel Wiesinger wrote:
*)
What is it good for? The only practical use I can imagine are
backups on thin clients, which operate without a hard disk. But this
is clearly far-fetched,
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