search for: unsused

...he command, option and version it is implemented in? That alone would be a great help. ----- Original Message ----- From: "Chris Adams" <linux at cmadams.net> To: "centos" <centos at centos.org> Sent: Monday, July 31, 2017 11:45:20 AM Subject: Re: [CentOS] claiming unsused space back Once upon a time, Warren Young <warren at etr-usa.com> said: > Zeroing the free space not only prevents inclusion of these discarded FS blocks, they compress better, too. Check out the "virt-sparsify" command - it does all of this for you. -- Chris Adams <linux a...

...f this option is quite severe. For this reason, nodiscard is the default. Vladimir -----Original Message----- From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Leroy Tennison Sent: Monday, July 31, 2017 4:42 PM To: centos <centos at centos.org> Subject: Re: [CentOS] claiming unsused space back You're right, there's a procedure following it, once the space is zeroed qemu-img will recognize it as such and will eliminate it when 'convert' is used. Apparently Fedora qemu has some better capabilities to shrink partitions but they haven't made it to "long...

...onvert to raw, shrink and re-convert to qcow2 if you want those capabilities. ----- Original Message ----- From: "Fred Smith" <fredex at fcshome.stoneham.ma.us> To: "centos" <centos at centos.org> Sent: Monday, July 31, 2017 8:50:57 AM Subject: Re: [CentOS] claiming unsused space back On Mon, Jul 31, 2017 at 08:28:49AM -0500, Leroy Tennison wrote: > I realize this is wandering off-topic but, if you have found Debian commands, you're doing better than me. What are they? Also, are you allowing dd to totally fill the partition (what I have found on the web as a...

Once upon a time, Warren Young <warren at etr-usa.com> said: > Zeroing the free space not only prevents inclusion of these discarded FS blocks, they compress better, too. Check out the "virt-sparsify" command - it does all of this for you. -- Chris Adams <linux at cmadams.net>

...ound on the web as a recommendation)? If so, is the OS surviving acceptably? ----- Original Message ----- From: "Miguel Gonz?lez" <miguel_3_gonzalez at yahoo.es> To: "centos" <centos at centos.org> Sent: Saturday, July 29, 2017 5:11:33 AM Subject: [CentOS] claiming unsused space back Hi, I?m running a CentOS server in a VPS. Backups of the VPS take quite much space if I don?t claim unused space. Currently I?m using dd if=/dev/zero of=/mytempfile and remove that file to claim that unused space. Any automatic way of doing a similar thing in CentOS? I have googled...

...it is implemented in? That alone would be a great help. > > ----- Original Message ----- > From: "Chris Adams" <linux at cmadams.net> > To: "centos" <centos at centos.org> > Sent: Monday, July 31, 2017 11:45:20 AM > Subject: Re: [CentOS] claiming unsused space back > > Once upon a time, Warren Young <warren at etr-usa.com> said: >> Zeroing the free space not only prevents inclusion of these discarded FS blocks, they compress better, too. > > Check out the "virt-sparsify" command - it does all of this for you. &gt...

Hi, I?m running a CentOS server in a VPS. Backups of the VPS take quite much space if I don?t claim unused space. Currently I?m using dd if=/dev/zero of=/mytempfile and remove that file to claim that unused space. Any automatic way of doing a similar thing in CentOS? I have googled for it but I have only found Debian commands. Thanks in advance! Miguel

...ation)? If so, is the OS surviving acceptably? > > ----- Original Message ----- > From: "Miguel Gonz?lez" <miguel_3_gonzalez at yahoo.es> > To: "centos" <centos at centos.org> > Sent: Saturday, July 29, 2017 5:11:33 AM > Subject: [CentOS] claiming unsused space back > > Hi, > > I?m running a CentOS server in a VPS. Backups of the VPS take quite > much space if I don?t claim unused space. > > Currently I?m using dd if=/dev/zero of=/mytempfile and remove that file > to claim that unused space. Any automatic way of doing a...

On Jul 31, 2017, at 7:50 AM, Fred Smith <fredex at fcshome.stoneham.ma.us> wrote: > > On Mon, Jul 31, 2017 at 08:28:49AM -0500, Leroy Tennison wrote: >> dd to totally fill the partition > > I may be blind, but I don't seehow that technique can "reclaim" any space. In addition to the OP?s qemu case, zeroing the free space can also be valuable when building

On Thu, 16 Mar 2017 15:08:46 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > From: Liang Li <liang.z.li at intel.com> > > This patch adds a function to provides a snapshot of the present system > unused pages. An important usage of this function is to provide the > unsused pages to the Live migration thread, which skips the transfer of > thoses unused pages. Newly used pages can be re-tracked by the dirty > page logging mechanisms. I don't think this will be useful for anything other than virtio-balloon. I guess it would be better to keep this code in the...

On Thu, 16 Mar 2017 15:08:46 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > From: Liang Li <liang.z.li at intel.com> > > This patch adds a function to provides a snapshot of the present system > unused pages. An important usage of this function is to provide the > unsused pages to the Live migration thread, which skips the transfer of > thoses unused pages. Newly used pages can be re-tracked by the dirty > page logging mechanisms. I don't think this will be useful for anything other than virtio-balloon. I guess it would be better to keep this code in the...

...g at intel.com> wrote: > > > > > From: Liang Li <liang.z.li at intel.com> > > > > > > This patch adds a function to provides a snapshot of the present system > > > unused pages. An important usage of this function is to provide the > > > unsused pages to the Live migration thread, which skips the transfer of > > > thoses unused pages. Newly used pages can be re-tracked by the dirty > > > page logging mechanisms. > > I don't think this will be useful for anything other than > > virtio-balloon. I guess it w...

...g at intel.com> wrote: > > > > > From: Liang Li <liang.z.li at intel.com> > > > > > > This patch adds a function to provides a snapshot of the present system > > > unused pages. An important usage of this function is to provide the > > > unsused pages to the Live migration thread, which skips the transfer of > > > thoses unused pages. Newly used pages can be re-tracked by the dirty > > > page logging mechanisms. > > I don't think this will be useful for anything other than > > virtio-balloon. I guess it w...

...com> wrote: >>> >>>> From: Liang Li <liang.z.li at intel.com> >>>> >>>> This patch adds a function to provides a snapshot of the present system >>>> unused pages. An important usage of this function is to provide the >>>> unsused pages to the Live migration thread, which skips the transfer of >>>> thoses unused pages. Newly used pages can be re-tracked by the dirty >>>> page logging mechanisms. >>> I don't think this will be useful for anything other than >>> virtio-balloon. I...

Hi, A majority of our work inolves ftp to my clients'' side over our slow connection. Now we need to allocate a greater b/w for this protocol. Is there anyway I can do it using lartc easily? Any suggestions on this please? With warm regards, -Payal _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc

From: Liang Li <liang.z.li at intel.com> This patch adds a function to provides a snapshot of the present system unused pages. An important usage of this function is to provide the unsused pages to the Live migration thread, which skips the transfer of thoses unused pages. Newly used pages can be re-tracked by the dirty page logging mechanisms. Signed-off-by: Liang Li <liang.z.li at intel.com> Signed-off-by: Wei Wang <wei.w.wang at intel.com> --- include/linux/mm.h |...

...15:08:46 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > >> From: Liang Li <liang.z.li at intel.com> >> >> This patch adds a function to provides a snapshot of the present system >> unused pages. An important usage of this function is to provide the >> unsused pages to the Live migration thread, which skips the transfer of >> thoses unused pages. Newly used pages can be re-tracked by the dirty >> page logging mechanisms. > I don't think this will be useful for anything other than > virtio-balloon. I guess it would be better to keep...

I have a Windows 2000 domU running in an LVM partition. I need to move it to another host, but none of my other xen servers have lvm or free space to create an lvm. So I''d like to convert it to a sparse img file. The file system in the domU is ntfs. Can anyone suggest how to do this? Thanks, James _______________________________________________ Xen-users mailing list

This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 2) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please read each patch commit log for details. Changes: v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4)

This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 2) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please read each patch commit log for details. Changes: v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4)