else that I missed?
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Signed-off-by: Hubert Kario
---
btrfslabel.c |2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/btrfslabel.c b/btrfslabel.c
index c9f4684..3c3566b 100644
--- a/btrfslabel.c
+++ b/btrfslabel.c
@@ -55,6 +55,8 @@ static void change_label_unmounted(char *dev, char *nLabel
/dev/vg-balor/backup
>
>
> Is it "normal", or is there a problem during the processing ?
>
> Thanks,
> Olivier
How much free space did those FS have? How many files were on them (was they
dominated by small or large files)?
Regards,
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2 3.0 73180 61520 pts/0RFeb18 121:04
> btrfs-convert /dev/vg-balor/backup
>
>
> Is it "normal", or is there a problem during the processing ?
>
> Thanks,
> Olivier
How much free space did those FS have? How many files were on them (was they
dominated by smal
On Monday 20 of February 2012 14:41:33 Olivier Bonvalet wrote:
> On 20/02/2012 14:20, Hubert Kario wrote:
> > On Monday 20 of February 2012 13:51:29 Olivier Bonvalet wrote:
> >> Hi,
> >>
> >> I'm trying to convert two ext4 FS to btrfs, but I'
Chris: What will btrfs-convert do when it encounters a directory with more
hardlinks than the btrfs limit?
On Monday 20 of February 2012 21:00:34 Fajar A. Nugraha wrote:
> On Mon, Feb 20, 2012 at 8:50 PM, Hubert Kario wrote:
> > On Monday 20 of February 2012 14:41:33 Olivier Bonva
Signed-off-by: Hubert Kario
---
scrub.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/scrub.c b/scrub.c
index 9dca5f6..630a1bf 100644
--- a/scrub.c
+++ b/scrub.c
@@ -1010,7 +1010,7 @@ static int scrub_fs_info(int fd, char *path,
if (!fi_args->num_devi
Signed-off-by: Hubert Kario
---
fs/btrfs/ioctl.c |5 -
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 3dede5c..d536816 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2120,7 +2120,10 @@ static long btrfs_ioctl_dev_info
Signed-off-by: Hubert Kario
---
fs/btrfs/ioctl.c |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index dae5dfe..3dede5c 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2121,6 +2121,7 @@ static long btrfs_ioctl_dev_info(struct
Sorry for the subject, this a single patch, not in a series.
Hubert Kario
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ly it provides
information on how much spindles is the data using. With static
configuration it will be useless, but when you start changing number of
drives in set then it's necessary to know if you're not under- or over-
utilising the disks.
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btrfs-progs tree.
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More
en the volume is exported using Samba, you can easily export
past copies too, without creating links.
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smime.p7s
Description: S/MIME cryptographic signature
ault.
That being said, what use-case would require snapshots taken more often than
every second? I doubt that you actually can do snapshots every second on a
busy file system, let alone more often. On lightly-used one they will be
identical and just clutter the name-space.
Regards,
--
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, either ext or btrfs.
btrfs-convert has to move at least some ext3 metadata blocks, so ext FS will
be broken. I don't know if btrfs-convert writes whole btrfs tree and then
updates it as it finds new inodes in ext3 or just goes over it sequentially.
But either way, you'll get at best bt
he files and
> metadata on a btrfs partition?
btrfs send is a work in progress, currently there are problems in tree
traversal that are being worked on
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.
Chris or Josef, can you confirm?
Still, a "zero-superblock" option would be useful for the btrfs tool. I'll
see what I can do about this.
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;s strictly btrfs business and not supporting reflink copy between
arbitrary directories is a bug.
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1
> mode currently.)
mdadm --zero-superblock removes MD superblock, it doesn't modify the data part
of the partition, it just zeroes the MD metadata.
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d
> > go about erasing the stale superblock and whether it is safe to do so
> > I can't say though.
>
> There is the command wipefs. Whether its safe to use here I do not know. I
> wouldn´t try without a backup.
Sorry, but I'm unable to find it. Is it a `btrfs` tool opt
Signed-off-by: Hubert Kario
---
cmds-device.c | 42 ++
man/btrfs.8.in |7 +++
2 files changed, 49 insertions(+)
diff --git a/cmds-device.c b/cmds-device.c
index db625a6..1edb091 100644
--- a/cmds-device.c
+++ b/cmds-device.c
@@ -246,11 +246,53
Signed-off-by: Hubert Kario
---
man/btrfs.8.in |2 ++
1 file changed, 2 insertions(+)
diff --git a/man/btrfs.8.in b/man/btrfs.8.in
index a840f7e..d410093 100644
--- a/man/btrfs.8.in
+++ b/man/btrfs.8.in
@@ -156,6 +156,8 @@ The start position and the number of bytes to deframention
can be
devices passed as parameters.
Hubert Kario (5):
btrfs: add command to zero out superblock
handle null pointers in btrfs_prepare_device
Remove unused option in btrfs_prepare_device
better error handling in btrfs_prepare_device()
btrfs: remove unused variables
btrfs-vol.c|2 +-
cmd
When calling the function from `btrfs device zero-super` we don't need
the additional information returned and don't want the "SMALL VOLUME"
warning printed.
Signed-off-by: Hubert Kario
diff --git a/utils.c b/utils.c
index ee7fa1b..6773be0 100644
--- a/utils.c
+++ b/util
Signed-off-by: Hubert Kario
diff --git a/cmds-device.c b/cmds-device.c
index db625a6..05a549c 100644
--- a/cmds-device.c
+++ b/cmds-device.c
@@ -246,11 +246,58 @@ static int cmd_scan_dev(int argc, char **argv)
return 0;
}
+static const char * const cmd_zero_dev_usage
zero_end is set explicitly to 1 inside the fuction so the device end
always will be zeroed out
Signed-off-by: Hubert Kario
diff --git a/btrfs-vol.c b/btrfs-vol.c
index 0efdbc1..c7b9f80 100644
--- a/btrfs-vol.c
+++ b/btrfs-vol.c
@@ -150,7 +150,7 @@ int main(int ac, char **av)
if (cmd
btrfs_prepare_device did abort the whole application on any error,
even when there were other tasks queued that could succeed, now it
returns non zero value on error.
Add more descriptive error messages: print failing device name and
cause of error.
Signed-off-by: Hubert Kario
diff --git a
Signed-off-by: Hubert Kario
diff --git a/cmds-device.c b/cmds-device.c
index a28752f..b1e70f9 100644
--- a/cmds-device.c
+++ b/cmds-device.c
@@ -261,8 +261,6 @@ static int cmd_zero_dev(int argc, char **argv)
int arg_processed;
int ret = 0;
int n;
- u64 device_len
On Tuesday 01 of May 2012 14:43:37 Tomasz Torcz wrote:
> On Tue, May 01, 2012 at 02:38:01PM +0200, Hubert Kario wrote:
> > This patch series adds `btrfs device zero super ` command to remove
> > the btrfs signature from the device as well as fix few minor problems in
> >
bvol /mnt/subvol-bak
big-file-editor /mnt/subvol/BIG-file
rm /mnt/subvol-bak/BIG-file
cp --reflink=always /mnt/subvol/BIG-file /mnt/subvol-bak/BIG-file
This does not cross any VFS boundaries.
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16kb but this requires 16kb memory pages.
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On Wednesday 02 of May 2012 16:28:43 David Sterba wrote:
> On Tue, May 01, 2012 at 02:40:29PM +0200, Hubert Kario wrote:
> > +static const char * const cmd_zero_dev_usage[] = {
> > + "btrfs device zero-superblock [ ...]",
>
> FYI, this step is named 'clea
On Wednesday 02 of May 2012 19:36:29 David Sterba wrote:
> On Wed, May 02, 2012 at 06:42:16PM +0200, Hubert Kario wrote:
> > > I'm not sure if this is useful and sensible usecase, clearing superblock
> > > is a one-time action anyway, so it's more for the
ngPatches in your
Linux checkout.
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On Wednesday 02 of May 2012 18:33:37 David Sterba wrote:
> On Tue, May 01, 2012 at 07:09:21PM +0200, Hubert Kario wrote:
> > Let me rephrase it:
> >
> > People don't want to be able to do:
> >
> > mount /dev/lvm/btrfs /mnt/a -t btrfs -o subvol=volA
>
data
> over to the fastest disk. Why not utilize all disks and benefit from
> disks working together?
For this to work, you need feature set that allows hot data movement between
disks and data restriping. Then such cache feature will use much of the same
code.
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QBS
bably the same issue this patch fixes:
>
> http://permalink.gmane.org/gmane.comp.file-systems.btrfs/16302
>
> It is included in a recent RC.
OK, that will teach me to write more descriptive commit comments:
http://permalink.gmane.org/gmane.comp.file-systems.btrfs/15856
http://permali
blocks.
I'm not sure about limits to size of directory, but I'd guess that going over
few tens of thousands of files in single flat directory will have speed
penalties.
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2fs /dev/videos-volume-42/logical-volume
Unlike with shrinking, there's really no place for error. Messing up those
commands will give quite clear error messages and definetly won't destroy
data (unless a hardware error occurs). And the FS on the LV is online all
the time, just like w
excessive number of retries (basically, the kernel repeating the
> work the drive already attempted) is being addressed in the block
> layer.
>
> "[PATCH] libata-eh don't waste time retrying media errors (v3)", I
> believe this is queued for 3.5
I just hope they don&
On Wednesday 09 of May 2012 19:18:07 David Sterba wrote:
> On Thu, May 03, 2012 at 03:11:45PM +0200, Hubert Kario wrote:
> > nice, didn't know about this. Such functionality would be nice to have.
> > But then I don't think that a "recreate the array if the param
ole point Helmut is trying to make.
>
> I am not sure whether that should be in userspace. It could be just an
> allocation mode like "raid0" or "single". Such as "single" as in one file
> is really on one disk and thats it.
I was thinking that "lin
et redundancy level on a per file basis.
In other words, with btrfs you can have a file with RAID6 redundancy and a
second one with RAID10 level of redundancy in single directory.
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On Thursday 10 of May 2012 21:15:30 Hugo Mills wrote:
> On Thu, May 10, 2012 at 09:43:58PM +0200, Hubert Kario wrote:
> > On Thursday 10 of May 2012 12:40:49 Martin Steigerwald wrote:
> > > Am Mittwoch, 9. Mai 2012 schrieb Kaspar Schleiser:
> > > > Hi,
> >
r any disk thrashing. Doesn't appear to
> be CPU or memory bound - will double check.
>From what I heard, this is caused by slow KVM CD virtualisation.
Try to install it and do some tests then.
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ace use "-d single" when creating
volume
for details, read the recent thread "800GB free, but no space left"
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ver again.
>
> Sounds like all you need is cp --reflink=always and rsync --inplace.
>
> Haven't tested is that works well, though.
It works very well, btrfs with snapshots, compression and rsync --inplace has
better storage utilisation than lessfs at around 10-15 snapshots
all multi-device
> filesystems on the machine". Is this not done automatically? Do I have
> to set up some script to do this?
>
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> More
irectories:
/mnt/btrfs/
|- server-a
|- server-b
|- server-c
|- snapshots-server-a
|- @GMT-2010.12.21-16.48.09
\- @GMT-2010.12.22-16.45.14
|- snapshots-server-b
\- snapshots-server-c
This way I can use t
t allow the transaction to
> commit until the write is done.
>
> option #1: keep something in memory. Well, any time we have a
> requirement to pin something in memory until userland decides to do a
> write, we risk oom.
Userland has already a file descriptor allocated (which can fail any
On Sunday 09 of January 2011 12:46:59 Alan Chandler wrote:
> On 07/01/11 16:20, Hubert Kario wrote:
> > I usually create subvolumes in btrfs root volume:
> >
> > /mnt/btrfs/
> >
> > |- server-a
> > |- server-b
> >
he current date, do a LVM snapshot on the source, rsync --inplace
data over and do a local snapshot naming the folder using the saved date. This
way the date in the name of backup directory is exact to about a second.
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On Tuesday, January 11, 2011 14:54:38 Ivan Labáth wrote:
> On 01/10/11 14:36, Hubert Kario wrote:
> > On Monday 10 of January 2011 14:25:32 Carl Cook wrote:
> >> Here is my proposed cron:
> >>
> >> btrfs subvolume snapshot hex:///home /media/backups/snapshots/h
On Tuesday, January 11, 2011 15:33:38 Ivan Labáth wrote:
> On 01/11/11 15:19, Hubert Kario wrote:
> > On Tuesday, January 11, 2011 14:54:38 Ivan Labáth wrote:
> >> On 01/10/11 14:36, Hubert Kario wrote:
> >>> On Monday 10 of January 2011 14:25:32 Carl Cook wrote:
&
f IO. IMHO it shouldn't take more than 4-8h for 1TB
7200rpm disks in an otherwise idle system, as such it's rather inefficient
right now.
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st be done at every boot? If so, where is recommended, in rc.local?
yes. rc.local is too late, unless you will also mount the volume from there
and not using /etc/fstab
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exactly file-level granular, if we
introduce snapshots in the mix, the new version can have the data regularly
accessed while the old snapshot won't, this way the obsolete blocks can be
moved to slow storage.
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he line "unsubscribe linux-btrfs"
> >> in the body of a message to majord...@vger.kernel.org
> >> More majordomo info at http://vger.kernel.org/majordomo-info.html
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-btrfs&
On Friday, January 21, 2011 11:16:49 cac...@quantum-sci.com wrote:
> On Thu 20 January 2011 22:55:54 Hubert Kario wrote:
> > You still have a btrfs on /dev/sdc, do a
> > dd if=/dev/zero of=/dev/sdc bs=8192
> > (overkill, but I don't remember which blocks have to be z
s., there's no reason why btrfs
shouldn't. For creation of FS you use one command, for management you use
other command. I'd say that's a pretty sane division.
>
> What would be great is if there was an image that showed the layers in
> Btrfs and how they interacted with
explain how to use
btrfs --help
command in help message
Signed-off-by: Hubert Kario
---
btrfs.c |2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/btrfs.c b/btrfs.c
index 46314cf..b84607a 100644
--- a/btrfs.c
+++ b/btrfs.c
@@ -151,6 +151,8 @@ static void help
extend the
btrfs --help
command to print detailed help message if available but fallback to
basic help message if detailed is unavailable
add detailed help message for 'filesystem defragment' command
little tweaks in comments
Signed-off-by: Hubert Kario
---
btrf
x27;m not sure if I
should post the patch from my tree with your patch applied or not.
You have modified some of the same lines I want to fix and as such my patch
may not be cleanly applicable. So, which tree I should base my patch on?
Regards
Hubert Kario
> On 01/23/2011 01:42 PM, Hubert Kario
is better have a misaligned patch instead nothing.
Just as I thought. I'll post it in a minute.
Regards
Hubert Kario
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Update
btrfs filesystem defragment
command explanation. Add explanation of advanced parameters and notes
about general usage.
Add few notes about the
btrfs --help
usage, fix related grammar.
Signed-off-by: Hubert Kario
---
man/btrfs.8.in | 33
; defragment the entire tree below the directory supplied in the
> argument.
Then it looks like the userspace part of implementation changed, don't know
why though.
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ounting with nodatacow and defragment the directory the file resides in
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th
of extents is small
will be lower.
>
> On Tue, Jan 25, 2011 at 6:30 PM, Hubert Kario wrote:
> > On Tuesday 25 of January 2011 07:45:02 Magicloud Magiclouds wrote:
> >> Hi,
> >> I am using 2.6.36.3 kernel with btrfs, 512MB memory and a very slow
> >> disk,
On Tuesday, January 25, 2011 18:29:35 Kaspar Schleiser wrote:
> On 01/22/2011 02:55 PM, Hubert Kario wrote:
> >> It looks like ZFS, Btrfs, and LVM should work in similar manners, but
> >> the overloaded terminology (pool, volume, sub-volume, filesystem are
> >> d
On Tuesday, January 25, 2011 18:59:39 Freddie Cash wrote:
> On Tue, Jan 25, 2011 at 9:43 AM, Hubert Kario wrote:
> > Besides, I don't see *why* this should be done...
> >
> > And as far as I know ZFS doesn't support different reduncancy levels for
> >
ssd' definitely should go in the same basket.
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in one hand and hexdump in the other...)
> >
> > I'm happy to provide any other information required. Please CC me on
> > replies as I'm not subscribed to the list.
> >
> > Thanks,
> > Diwaker
>
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Adds explanation to help message and man page how to use `filesystem resize'
to resize only a single device not all devices of a file system.
Signed-off-by: Hubert Kario
---
patch to apply cleanly requires my previous patches adding advanced help
functionality
btrfs.c|
kes the code
_less_ readable.
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only du, which is not reporting what I want to know.
>
> Regards
>
> Roman Kapusta
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On Thursday, February 17, 2011 13:38:58 Roman Kapusta wrote:
> On Thu, Feb 17, 2011 at 12:54, Hubert Kario wrote:
> > On Thursday, February 17, 2011 12:13:53 Roman Kapusta wrote:
> >> Hello all,
> >>
> >> Is there any way how to obtain information how much s
data (for debugging purposes I guess?). I guess it also doesn't
> work on a mounted filesystem, so fixing btrfs-image would be of limited
> use right now.
>
There's nothing like it right now, the only way to backup whole btrfs volume
is to use dd.
something like "zfs send&
= ?
>
> If my kernel module is too old, anyone know of a successful backport of
> a newer btrfs for Ubuntu Lucid? In a PPA or otherwise?
>
> Cheers,
> b.
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100644 scrub.c
Please, update the man pages.
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>
> > Some disks lie about cache flush having completed.
>
> This is really not true for modern enterprise class drives. You might have
> more issues with USB thumbdrives and other really low end parts.
btrfs is supposed to be an ext3/4 replacement - it _will_ be used with low end
trfs filesystem?
You can compress files already on disk using
btrfs filesystem defragment -c /path/to/file
but defragmenting breaks snapshotting (at least it did 2 months ago, dunno if
it's still true)
>
> Any help would be appreciated.
> Stephane
--
Hubert Kario
QBS - Quality B
it
ago? Under 3.6.9 it works fine for me... Also, the blocks are shared between
subvolumes if the other subvolume is a snapshot of the first one.
Besides, I think that doing a rsync from remote server and snapshotting the
subvolume dedicated for server will be the standard approach.
Regards,
-
smime.p7m
Description: S/MIME encrypted message
Sorry, loks like list mailer doesn't like SMIME messages.
On Thursday 19 of May 2011 21:04:54 Hubert Kario wrote:
> On Wednesday 18 of May 2011 00:02:52 Stephane Chazelas wrote:
> > Hiya,
> >
> > I've not found much detail on what the "ssd" btrfs mou
nd performance improvements since
Regards,
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Hubert Kario
QBS - Quality Business Software
02-656 Warszawa, ul. Ksawerów 30/85
tel. +48 (22) 646-61-51, 646-74-24
www.qbs.com.pl
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fixes compilation warnings with gcc 4.6.0 20110429
Signed-off-by: Hubert Kario
---
mkfs.c|3 ---
volumes.c |2 --
2 files changed, 0 insertions(+), 5 deletions(-)
diff --git a/mkfs.c b/mkfs.c
index 1b5ef06..d40b2e8 100644
--- a/mkfs.c
+++ b/mkfs.c
@@ -1060,7 +1060,6 @@ static int
some help messages don't use advanced help message (shown when
invoked as `btrfs command subcommand --help`)
initialize them to NULL (meaning "use regular help message").
Signed-off-by: Hubert Kario
---
this patch is for the branch integration-20110626 in
http://git.darksatanic
On Thursday 30 of June 2011 23:19:02 Hugo Mills wrote:
>After a reorganisation of patches, and sending a bunch of them to
> Chris, I've also updated the integration branch to match that. It's
> available from:
>
> http://git.darksatanic.net/repo/btrfs-progs-unstable.git/
> integration-20110630
ere will be a userspace fsck (Chris Mason is working on it ATM).
The two big features of btrfs are self-healing and online fsck, those have to
be implemented in kernel space.
--
Hubert Kario
QBS - Quality Business Software
02-656 Warszawa, ul. Ksawerów 30/85
tel. +48 (22) 646-61-51, 646-74-24
www.qbs.co
:
1. is impossible (UUIDs)
2. won't fix errors
I have to note that I don't know how FFS fsck is implemented.
> A good fsck is quite complex and you are unlikely to want all
> that code in kernel space.
complete one, yes, but it's not quite pointless, ZFS does it like this and
a
I get an error.
> Since on the wiki you mention only the packages for Fedora and Debian,
>
> Which are the requirements for the btrfs tools?
>
> PS: AUR package is broken as well.
the AUR package is OK, problem is that the sources don't compile with new gcc.
Download Hugo's
On Sunday 03 of July 2011 14:56:40 Leonidas Spyropoulos wrote:
> On Sun, Jul 3, 2011 at 1:20 PM, Hubert Kario wrote:
> > On Sunday 03 of July 2011 00:40:46 Leonidas Spyropoulos wrote:
> >> On Sat, Jul 2, 2011 at 11:39 PM, Leonidas Spyropoulos
> >>
> >> wrote
On Monday 11 of July 2011 17:13:13 Jan Schmidt wrote:
> Hi Hubert,
>
> I have to admit I did not recognize this patch but now Hugo is forcing
> me to use the "detailed help messages" and I've got an improvement to
> suggest:
>
> On 23.01.2011 13:42, Hubert Kar
On Tuesday 12 of July 2011 00:22:01 Hugo Mills wrote:
> On Mon, Jul 11, 2011 at 09:11:24PM +0200, Jan Schmidt wrote:
> > On 07/11/2011 08:38 PM, Goffredo Baroncelli wrote:
[snip]
> > > A script extracts from the comment in the source both:
> > > - the text for the man page
> > > - the text for the
On Saturday 09 of July 2011 08:19:30 Paweł Brodacki wrote:
> Hello,
>
> I've stumbled upon this article:
> http://storagemojo.com/2011/06/27/de-dup-too-much-of-good-thing/
>
> Reportedly Sandforce SF1200 SSD controller does internally block-level
> data de-duplication. This effectively removes the
don't know
whatever it could be possible to optimise btrfs cow system for files that are
exactly the same.
>
> Cheers,
> Rob
>
--
Hubert Kario
QBS - Quality Business Software
02-656 Warszawa, ul. Ksawerów 30/85
tel. +48 (22) 646-61-51, 646-74-24
www.qbs.com.pl
System Zarzą
On Wednesday 03 March 2010 00:22:31 jim owens wrote:
> Hubert Kario wrote:
> > On Tuesday 02 March 2010 03:29:05 Robert Collins wrote:
> >> As I say, I realise this is queued to get addressed anyway, but it seems
> >> like a realistic thing for people to do (use Backup
sig for the users to talk about double, triple
replication or [single|double]-parity.
It's a bit silly to talk about "Arrays of Disks" when we mean groups of
blocks.
--
Hubert Kario
QBS - Quality Business Software
ul. Ksawerów 30/85
02-656 Warszawa
POLAND
tel. +48 (22) 646-61-51,
s the SSD making sure all blocks are more or less equally
> written to avoid continuous load on the same blocks.
Isn't this all about wear leveling? TRIM has no meaning for magnetic media.
It's used to tell the drive which parts of medium contain only junk data and
can be used in
cking your head in the sand
> >> because you cannot be bothered to think.
> >
> > And your guess is that intel engineers had no glue when designing the XE
> > including its controller? You think they did not know what you and me
>
> know
>
> > and
> > t
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