similar to: fstrim support in libvirt/qemu guests

On Mon, Nov 3, 2014 at 4:24 PM, Michal Privoznik <mprivozn@redhat.com> wrote: > On 01.11.2014 05:30, Dennis Jacobfeuerborn wrote: >> >> Hi, >> I'm trying to find out how to enable fstrim support for libvirt/qemu >> guests. Specifically I'm trying to enable this on a CentOS 7 host (qemu >> 1.5). I searched the web but only found very vague information

On 01.11.2014 05:30, Dennis Jacobfeuerborn wrote: > Hi, > I'm trying to find out how to enable fstrim support for libvirt/qemu > guests. Specifically I'm trying to enable this on a CentOS 7 host (qemu > 1.5). I searched the web but only found very vague information and no > clear documentation on the requirements or how to modify the guest xml > to enable discard/fstrim

On 11/3/2014 8:43 AM, Andrey Korolyov wrote: > On Mon, Nov 3, 2014 at 4:24 PM, Michal Privoznik <mprivozn@redhat.com> wrote: >> On 01.11.2014 05:30, Dennis Jacobfeuerborn wrote: >>> Hi, >>> I'm trying to find out how to enable fstrim support for libvirt/qemu >>> guests. Specifically I'm trying to enable this on a CentOS 7 host (qemu >>>

I think I found a bug affecting btrfs filesystems and users invoking fstrim to discard unused blocks: if I execute a `fstrim -v /` twice, the amount trimmed does not change on the 2nd invocation AND it takes just as long as the first.  Why do I think this is a bug?  When I do the same on an ext4 partition I get different behavior: the output shows 0 B trimmed and it does is instantaneously when I

Since Linux commit f663b5b38fff trimming vfat is now supported by Linux. This broke the test which assumed it was not supported. Use another filesystem (minix) which does not support trimming instead. Thanks: Daniel P. Berrangé and Pino Toscano. --- ...virt-sparsify-in-place-fstrim-unsupported.sh | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git

I still get the "the discard operation is not supported" fstrim error when the LVs are set to "nopassdown" Seems that when I use ext4 the fstrim reports that it worked but the LVs Data% does not decrease after the fstrim. xfs just throws the error. I've also been looking at the output of lsblk -D # lsblk -D NAME DISC-ALN DISC-GRAN DISC-MAX DISC-ZERO xvdb

Hi All I'm trying to setup my LVM thin pool to support discards so that the pool can reclaim space even if the underlying device doesn't support trim. It is my understanding that all thin pools should support trim even if the underlying device doesn't. (please correct me if I'm wrong here) I have one centos server that does support trim and everything is working correctly but any

This reverts the change made for RHBZ#1168144. The warning is now always displayed. It would be nice to make the warning actionable, but there is not a lot that end users can do since fstrim is such a complex topic interacting with all filesystem and storage layers. --- v2v/v2v.ml | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/v2v/v2v.ml b/v2v/v2v.ml index

On Fri, Aug 12, 2016 at 04:50:31PM +0200, Pino Toscano wrote: > On Friday, 12 August 2016 10:37:29 CEST Richard W.M. Jones wrote: > > This reverts the change made for RHBZ#1168144. The warning is now > > always displayed. > > > > It would be nice to make the warning actionable, but there is not a > > lot that end users can do since fstrim is such a complex topic

On Friday, 5 August 2016 12:22:45 CEST Richard W.M. Jones wrote: > Because we run the external fstrim command we don't have access to the > kernel errno when it fails. However in the case where it prints this > specific error message, turn that into errno ENOTSUP. > --- Can you please note this behaviour in the documentation of the fstrim API? Thanks, -- Pino Toscano

On 09.12.2015 00:39, NightLightHosts Admin wrote: > On Tue, Dec 8, 2015 at 5:26 PM, Dennis Jacobfeuerborn > <dennisml at conversis.de> wrote: >> Hi, >> today we ran into a strange problem: When performing a regular Windows >> 2008r2 update apparently among other things the following was installed: >> "SUSE - Storage Controller - SUSE Block Driver for

Hi! With 3.2-rc4 (probably earlier), Ext4 seems to remember what areas it trimmed: merkaba:~> fstrim -v /boot /boot: 224657408 bytes were trimmed merkaba:~> fstrim -v /boot /boot: 0 bytes were trimmed But BTRFS does not: merkaba:~> fstrim -v / /: 4431613952 bytes were trimmed merkaba:~> fstrim -v / /: 4341846016 bytes were trimmed Is it planned to add this feature to BTRFS

Hi, I'm trying to build a redundant duo of firewalls/routers/gateways and I'm thinking about not putting any disks in them and instead using a usb-stick raid-1 as storage. Has anyone any experience with this? Since the machines will be running pretty much only iptables, conntrackd and keepalived there is not going to be a lot of disk activity going on and the plan is to do all the

Hi, I'm currently trying to mirror a couple of yum repositories and the only tool that seems to be available for this is reposync. Unfortunately reposync for some inexplicable reason seems to use the yum config of the local system as a basis for its work which makes no sense and creates all kinds of problems where cache directories and metadata gets mixed up. Are there any alternatives? Some

On 27.02.2018 16:45, Stephen John Smoogen wrote: > On 27 February 2018 at 06:11, Dennis Jacobfeuerborn > <dennisml at conversis.de> wrote: >> Hi, >> I'm currently trying to mirror a couple of yum repositories and the only >> tool that seems to be available for this is reposync. >> Unfortunately reposync for some inexplicable reason seems to use the yum

As the minimum block size to discard in qcow2 is 64K, any point in fstrimming smaller contiguous blocks? TIA, Y.

Hi, I'm trying to get some basic data from running guests on a libvirt HV but one thing I'm missing is the name of the network interfaces of the guests. I can get the MAC address from the XML but there seems to be no function to actually get the name of the interface. The only function that comes close is this one:

On 15 Apr 2015 13:22, "Dennis Jacobfeuerborn" <dennisml at conversis.de> wrote: > > On 15.04.2015 12:41, Alessandro Baggi wrote: > > Hi there, > > Yesterday I've updated from 7 to 7.1 and today I've noticed on 2 server > > that postgresql systemd file was replaced with default values. This make > > postgres to no start and webserver give me

Do you need the whole configuration? On the switch end, we have the relevant VLAN (VLAN 48) with the assigned IP address of 192.168.48.101 and the range of ports (Gi1/0/1 - Gi1/0/8) assigned to that VLAN. Seems - and acts - like a legitimate setup and works fine, except for this particular instance. Thanks. Boris. On Fri, Jan 23, 2015 at 8:54 PM, Dennis Jacobfeuerborn < dennisml at

On 16.01.2015 15:14, Michal Privoznik wrote: > On 16.01.2015 13:33, Dennis Jacobfeuerborn wrote: >> Hi, >> today I noticed that one of my HVs started swapping aggressively and >> noticed that the two guests running on it use quite a bit more ram than >> I assigned to them. They respectively were assigned 124G and 60G with >> the idea that the 192G system then has