On Wed, Aug 1, 2018 at 3:12 PM, Jayme <jaymef@gmail.com> wrote:
I burned the node image yesterday 4.2.5.1 July 31. I've been playing with Ovirt install for the past week and burned node iso a few times and this image is the first time I've ever seen vdo options in gdeploy.
How do I make sure I have the most recent version of gdeploy, is node behind?
Also can anyone chime in about vdo, is it recommended for use now? What is its main benefit, does it offer performance boost or more for saving disk space?
VDO provides dedupe/compression at the block layer. More at https://github.com/dm-vdo/kvdo It provides space savings, but there's a performance drop depending on the workloads you run. It's better to turn on VDO if you're using SSD devices as the performance decrease is less noticeable. But please run your own benchmark tests to decide. The vdo kernel module has been available since CentOS 7.5
On Wed, Aug 1, 2018, 2:04 AM Gobinda Das, <godas@redhat.com> wrote:
Hi, Looks like you are using older version of gdeploy. Can you please specify the gdeploy version?
On Wed, 1 Aug 2018, 12:55 a.m. Jayme, <jaymef@gmail.com> wrote:
More info from the gdploy config:
action=create devices=sda,sdb names=vdo_sda,vdo_sdb logicalsize=17000G,17000G blockmapcachesize=128M readcache=enabled readcachesize=20M emulate512=on writepolicy=auto ignore_vdo_errors=no slabsize=32G,32G
action=create devices=sda,sdb names=vdo_sda,vdo_sdb logicalsize=17000G,17000G blockmapcachesize=128M readcache=enabled readcachesize=20M emulate512=on writepolicy=auto ignore_vdo_errors=no slabsize=32G,32G
On Tue, Jul 31, 2018 at 4:19 PM, Jayme <jaymef@gmail.com> wrote:
PLAY [gluster_servers] ****************************** ***************************
TASK [Create VDO with specified size] ****************************** ************ failed: [HOST] (item={u'disk': u'/dev/sda', u'logicalsize': u'17000G', u'name': u'vdo_sda'}) => {"changed": false, "err": "usage: vdo create [-h] -n <volume> --device <devicepath>\n [--activate {disabled,enabled}]\n [--blockMapCacheSize <megabytes>]\n [--blockMapPeriod <period>]\n [--compression {disabled,enabled}]\n [--deduplication {disabled,enabled}]\n [--emulate512 {disabled,enabled}] [--force]\n [--indexMem <gigabytes>] [--readCache {disabled,enabled}]\n [--readCacheSize <megabytes>]\n [--sparseIndex {disabled,enabled}]\n [--vdoAckThreads <threadCount>]\n [--vdoBioRotationInterval <ioCount>]\n [--vdoBioThreads <threadCount>]\n [--vdoCpuThreads <threadCount>]\n [--vdoHashZoneThreads <threadCount>]\n [--vdoLogicalSize <megabytes>]\n [--vdoLogicalThreads <threadCount>]\n [--vdoLogLevel {critical,error,warning,notice,info,debug}]\n [--vdoPhysicalThreads <threadCount>]\n [--vdoSlabSize <megabytes>]\n [--writePolicy {async,sync,auto}] [-f <file>]\n [--logfile <pathname>] [--verbose]\nvdo create: error: argument --vdoSlabSize: must be an LVM-style size string\n", "item": {"disk": "/dev/sda", "logicalsize": "17000G", "name": "vdo_sda"}, "msg": "Creating VDO vdo_sda failed.", "rc": 2} failed: [HOST] (item={u'disk': u'/dev/sdb', u'logicalsize': u'17000G', u'name': u'vdo_sdb'}) => {"changed": false, "err": "usage: vdo create [-h] -n <volume> --device <devicepath>\n [--activate {disabled,enabled}]\n [--blockMapCacheSize <megabytes>]\n [--blockMapPeriod <period>]\n [--compression {disabled,enabled}]\n [--deduplication {disabled,enabled}]\n [--emulate512 {disabled,enabled}] [--force]\n [--indexMem <gigabytes>] [--readCache {disabled,enabled}]\n [--readCacheSize <megabytes>]\n [--sparseIndex {disabled,enabled}]\n [--vdoAckThreads <threadCount>]\n [--vdoBioRotationInterval <ioCount>]\n [--vdoBioThreads <threadCount>]\n [--vdoCpuThreads <threadCount>]\n [--vdoHashZoneThreads <threadCount>]\n [--vdoLogicalSize <megabytes>]\n [--vdoLogicalThreads <threadCount>]\n [--vdoLogLevel {critical,error,warning,notice,info,debug}]\n [--vdoPhysicalThreads <threadCount>]\n [--vdoSlabSize <megabytes>]\n [--writePolicy {async,sync,auto}] [-f <file>]\n [--logfile <pathname>] [--verbose]\nvdo create: error: argument --vdoSlabSize: must be an LVM-style size string\n", "item": {"disk": "/dev/sdb", "logicalsize": "17000G", "name": "vdo_sdb"}, "msg": "Creating VDO vdo_sdb failed.", "rc": 2} to retry, use: --limit @/tmp/tmpQQ9t92/vdo-create.retry
PLAY RECAP ************************************************************ ********* HOST : ok=0 changed=0 unreachable=0 failed=1
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