similar to: Convert from LVM

On 06/08/2018 12:34 PM, Ulf Volmer wrote: > On 08.06.2018 19:11, Matt wrote: >> I have a Centos 7 install using EXT4 on LVM. Its running as a VM >> inside KVM. Issue I have run into is that fstrim does not work due to >> the LVM. Without fstrim snapshots have gotten huge. Is there a way >> convert it from LVM to non-LVM without a complete reinstall? > please

> On 08.06.2018 19:11, Matt wrote: >> I have a Centos 7 install using EXT4 on LVM. Its running as a VM >> inside KVM. Issue I have run into is that fstrim does not work due to >> the LVM. Without fstrim snapshots have gotten huge. Is there a way >> convert it from LVM to non-LVM without a complete reinstall? > > please consider to enable trim over LVM. You have

Robert Heller wrote: > At Thu, 25 Jun 2015 11:03:18 -0400 CentOS mailing list <centos at centos.org> > wrote: >> On Wed, June 24, 2015 16:11, Chuck Campbell wrote: >> > >> > Is there an easy to follow "howto" for normal LVM administration >> > tasks. I get tired of googling every-time I have to do something >> > I don't remember

On Wed, June 24, 2015 16:11, Chuck Campbell wrote: > > Is there an easy to follow "howto" for normal LVM administration > tasks. I get tired of googling every-time I have to do something > I don't remember how to do regarding LVM, so I usually just > don't bother with it at all. > > I believe it has some benefit for my use cases, but I've been >

Hi! I need to convert a KVM virtual machine from LVM to a qcow2 image, and wonder if this is the best way to do it (*1): [$] qemu-img convert -O qcow2 /dev/vg_name/lv_name/ /var/lib/libvirt/images/image_name.qcow2 If this is the best way to do this, will this keep the information on: /dev/vg_name/lv_name/ untouched? Thanks, and please point me towards another mailing list if this it not right

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

I've upgraded my x86_64 4.2 box to the latest kernel 2.6.9.34 and tried an lvm snapshot. It worked fine and I was able to mount the snapshot etc. Now I cannot seem to remove the snapshot. If I try a 'lvremove' it asks if I want to remove the 'active' snapshot, if I say yes it just hangs and the box goes to 99% wait io, however the disk lights do not come on during this. The

On 6/25/2015 8:50 AM, Robert Heller wrote: > man vgdisplay > man lvdisplay > man lvcreate > man lvextend > man lvresize > man lvreduce > man lvremove > man e2fsck > man resize2fs man xfs_growfs -- john r pierce, recycling bits in santa cruz

On 08.06.2018 19:11, Matt wrote: > I have a Centos 7 install using EXT4 on LVM. Its running as a VM > inside KVM. Issue I have run into is that fstrim does not work due to > the LVM. Without fstrim snapshots have gotten huge. Is there a way > convert it from LVM to non-LVM without a complete reinstall? please consider to enable trim over LVM. You have just to set issue_discards =

This patch is easier to read if you use the 'git show -w' option. Also observe that: fun a -> ( fun () -> (* code *) ) (ie. returning a closure) is identical to: fun a () -> (* code *) Rich.

Hi... I have had a problem when I am going to detach one specific LVM partitions of Xen, so I have been trying xm destroy <domain>, lvchange -an <lvm_partition>, lvremove -f.... So I haven''t had sucess. I restarted the server with init 1 yet and nothing... I have seem two specific process started xenwatch and xenbus, but I am not sure if this processes have some action over

Hi, I'd like to know what would be the best way to remove an iscsi lvm storage from a server. (removing all reference to that storage etc.) The storage in question will be reset and reformated and used on a different server; so no LVM export is needed. Do I have to do lvremove ..., vgremove ..., pvremove ... and do an iscsiadm -m node -T ... -p ... -u and iscsiadm -m node -o delete -T ...

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

I decided that the next time I reformatted my main desktop computer (this one) I would have a ssd installed in it to use for the boot drive. Now that Centos 7 is on the horizon, I'm thinking that the time is approaching when I'll want to do that. The last time I set up a computer with a ssd in it, that was the only drive that it had. I changed issue_discards=0 to issue_discards=1 into

Do you mean you have a CentOS 7 VM which has partitioned is virtual disk (eg /dev/vda) to have a LVM partition, which in turn has a logical volume for root? It should be possible create a fresh virtual disk, add it to the VM as /dev/vdb (say), and then inside the CentOS 7 VM, partition the new disk into however many partitions you need (say /dev/vdb1 for /boot, /dev/vdb2 for swap, and

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

hi, I use the libvirt-python to manage my virtual machine. When I delete a volume use vol.delete(0), sometimes it note me that has occur the error: libvirtError: internal error '/sbin/lvremove -f /dev/vg.vmms/lvm-v097222.sqa.cm4' exited with non-zero status 5 and signal 0: Can't remove open logical volume

Hi! Folowing setup: 4x HD 500TB 1st: /boot 4GB, remaining part LVM 2nd, 3rd, 4th all LVM LVM volumes: - 30G /root - 8G /var - 8G /tmp - 200G /var/log/pgsql - 800G /var/spacewalk - 4G swap System boots into emergency mode because it does not find any of the logical volumes defined, because it does not enable the LVM volume group. Giving "lvm", then "vgchange -a y",

I have a kernel BUG() most of the time when updating my LVM configuration. I created a bug report on kernel linux-2.6 package as it looked related to kernel; but searching through bug reports, it look like it's Xen related. - No similar bug report about LVM crash for non-xen user - Other Xen users have similar errors: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615048 "base: After

Leo, >> I would like to obtain an ssl certificate, so I can run my own imap server on a machine in my office. >> I am assuming I'll need to pay a CA to generate what I need, but >> I'm confused about what I need. I am running dovecot at teh moment, >> but my clients (iphone, windows laptops) say my ssl connection is >> not trusted. The phone just won't