search for: vdo

sorry corrections: For this test I created a 40GB lvm volume group with /dev/sdb and /dev/sdc then a 40GB LV then a 60GB VDO vol (for testing purposes) vdostats --verbose /dev/mapper/vdoas | grep -B6 'saving percent' output from just created vdoas [root at localhost ~]# vdostats --verbose /dev/mapper/vdoas | grep -B6 'saving percent' physical blocks : 10483712 logical blocks...

Folks I was impressed with the description of VDO (Virtual Device Optimizer?) in the RedHat documentaion, so much that I tried to use it. The tutorials led me to a few commands. I built a VDO device on top of two USB disks which I made into a Logical Volume, and I was ready to go. In my test case, I had a file set of about 600 GB. There was...

On May 3, 2020 8:33:33 AM GMT+03:00, Erick Perez - Quadrian Enterprises <eperez at quadrianweb.com> wrote: >sorry corrections: >For this test I created a 40GB lvm volume group with /dev/sdb and >/dev/sdc >then a 40GB LV >then a 60GB VDO vol (for testing purposes) > >vdostats --verbose /dev/mapper/vdoas | grep -B6 'saving percent' >output from just created vdoas > >[root at localhost ~]# vdostats --verbose /dev/mapper/vdoas | grep -B6 >'saving >percent' >physical blocks :...

...;ve had several data-loss events with ZFS where because of a combination of errors and/or mistakes, the entire store was lost. I've also noticed that ZFS is maintained separately from Centos. At this moment, the Centos 8 update causes ZFS to fail. Looking for an alternate, I'm trying VDO. In the VDO installation, I created a logical volume containing two hard-drives, and defined VDO on top of that logical volume. It appears to be running, yet I find the deduplication numbers don't pass the smell test. I would expect that if the logical volume contains three copies of ess...

Hi David, in my opinion, VDO isn't worth the effort. I tried VDO for the same use case: backups. My dataset is 2-3TB and I backup daily. Even with a smaller dataset, VDO couldn't stand up to it's promises. It used tons of CPU and memory and with a lot of tuning I could get it to kind of work, but it became corrupte...

My two cents: 1- Do you have an encrypted filesystem on top of VDO? If yes, you will see no benefit from dedupe. 2- can you post the stats of vdostats ?verbose /dev/mapper/xxxxx (replace with your device) you can do something like: "vdostats -verbose /dev/mapper/xxxxxxxx | grep -B6 'save percentage' On Sat, May 2, 2020 at 9:54 PM david <davi...

...Errata and Bugfix Advisory 2018:1408 Upstream details at : https://access.redhat.com/errata/RHBA-2018:1408 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: c5b48207e2d3003ba38df515a78b57062c7e27a21ebdcd9fd4a4043f55a50622 vdo-6.1.0.168-18.x86_64.rpm Source: 549871225c07fe3f617c1b77f869d5fb462d2b39435fbd54f5ae2fe4df09ee56 vdo-6.1.0.168-18.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos at irc.freenode.net Twitter: @JohnnyCentOS

Folks I've started to use "vdo" instead of zfs in Centos 7. I hope this is a wise decision. However, I'm a bit mystified in decoding the "vdostats" output. I'd like to figure out how well deduplication is working. One measure would be to find two numbers: L = How many bocks are in use as reported...

On Sat, May 2, 2020 at 10:54 PM david <david at daku.org> wrote: > > I'm looking for a solution for backups because ZFS has failed on me > too many times. In my environment, I have a large amount of data > (around 2tb) that I periodically back up. I keep the last 5 > "snapshots". I use rsync so that when I overwrite the oldest backup, > most of the data is

hi, I'm testing the new CentOS 8, seems latest kmod-kvdo-6.2.0.293-50.el8.x86_64 does not contain modules for latest kernel kernel-4.18.0-80.7.1.el8_0.x86_64 ?rpm -ql kmod-kvdo-6.2.0.293-50.el8.x86_64 /etc/depmod.d/kvdo.conf /lib/modules/4.18.0-79.el8+2.x86_64 /lib/modules/4.18.0-79.el8+2.x86_64/extra /lib/modules/4.18.0-79.el8+2.x86_64/extra/kmod-kvd...

Also, if you want to use deduplication (via VDO) then you must remember to "dedupe then encrypt" Storage > LUKS > VDO > LVM old but good reference to: https://access.redhat.com/articles/2106521 On Tue, Jun 16, 2020 at 3:00 PM Jason Edgecombe <jwedgeco at uncc.edu> wrote: > > I recommend having LUKS be "under&...

Hi! I would like to reopen a discussion that I saw a couple of years ago, with the subject "Sending Calls via SIP trunk from two different IP addresses from same Asterisk Machine" The use case is simpe: There are providers that want to see a separate source IP address for each of their customers SIP trunks. Now, if we have an asterisk box with several customers, we have a problem.

Hi all, I have a user who would like to stream their favorite radio station from iHeart radio for their music on hold. It this TECHNICALLY possible? If so, any pointers would be appreciated. Is this LEGAL in the US? Thanks in advance, Mike. -------------- next part -------------- An HTML attachment was scrubbed... URL:

On Tue, Oct 8, 2019 at 2:46 AM Giuseppe Tanzilli - Serverplan <giuseppe at serverplan.com> wrote: > > hi, > I'm testing the new CentOS 8, > seems latest kmod-kvdo-6.2.0.293-50.el8.x86_64 does not contain modules > for latest kernel kernel-4.18.0-80.7.1.el8_0.x86_64 The kmod can be built against an older kernel and used on the more modern version. That is, unless the symbols in use had a signature change, which would signal to the kernel module that they...

Hi, we miss the updated packages matching the new kernel: ?modprobe kvdo modprobe: FATAL: Module kvdo not found in directory /lib/modules/4.18.0-80.7.1.el8_0.x86_64 CentOS developers are notified thanks On 08/10/2019 15:09, Andrew Walsh wrote: > On Tue, Oct 8, 2019 at 2:46 AM Giuseppe Tanzilli - Serverplan > <giuseppe at serverplan.com> wrote: >>...

...MySQL as each node currently has MySQL however there is a lot of data that is stored locally on each box. I may have to take this route if I can't find something else but that would mean syncing all sorts of data that does not need to be synced. On Tue, Jul 30, 2019 at 10:03 PM Glenn Geller (VDOPh) <ggeller at vdo-ph.com> wrote: > Hi Dovid, > > Totally possible... We're currently doing what you suggest with standard > mySQL configured in Master-Master replication mode, across many nodes > geo-distributed, with no (or few, like environment related) errors... for a...

Hi all, with regard to LUKS; should it placed before LVM or after? Any recommendations? TRIM command fully supported through all layers etc? -- Leon

...ove the mdbox storage with rm because I'll be stuck with attachments from removed mailboxes. Am I wrong? you may be right. I don't know if any tools like doveadm deduplicate will check for orphans. On a new server you could disable sis and use a filesystem with deduplication instead (e.g. vdo) > This is why I first use doveadm flags/expunge to mark as removed all messages then I use doveadm purge to remove them from storage. I can't use theses commands on deleted/disabled user, I get an error saying the user cannot be found, so I can't remove them from LDAP first. you coul...

Hi All, I'll like to know if exist some Basic FXO that support some type of automatic provisioning of configuration. Our idea is avoid the users need to go into WebPage and setup our SIP gateway. Some advice or recommendation? Thanks Alejandro -------------- next part -------------- An HTML attachment was scrubbed... URL:

Good morning, in order to post proper documentation, what logs (or log level) do I need to troubleshoot a Centos 7.6.1810 3.10.0-957.27.2.el7.x86_64 tha tis running a NFS server on top LVM on top of XFS on top of VDO on top of MDAM on a 6 SSD disk RAID6 ? This physical NFS server is servign 2 NFS v4.2 shares to 2 physical KVM virtualization hosts. When remote NFS clients start doing intensive stuff (massive writes) , the NFS server crashes and sometimes make the Linux server reboot. form KVM side this is all...