From jira at ovirt-jira.atlassian.net Wed Nov 15 14:36:32 2017 Content-Type: multipart/mixed; boundary="===============6541986448426523591==" MIME-Version: 1.0 From: Barak Korren (oVirt JIRA) To: infra at ovirt.org Subject: [JIRA] (OVIRT-1763) Increase entropy for hosts Date: Wed, 15 Nov 2017 14:36:31 +0000 Message-ID: In-Reply-To: JIRA.33295.1510744867000@Atlassian.JIRA --===============6541986448426523591== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable This is a multi-part message in MIME format... ------------=3D_1510756591-26566-475 Content-Type: text/plain; charset=3DUTF-8 Content-Transfer-Encoding: 7bit [ https://ovirt-jira.atlassian.net/browse/OVIRT-1763?page=3Dcom.atlassi= an.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D35= 345#comment-35345 ] = Barak Korren edited comment on OVIRT-1763 at 11/15/17 2:36 PM: --------------------------------------------------------------- [~ederevea] OST uses a simple check to determine if to run in RAM or not: {code} # if above RAM_THRESHOLD KBs are available in /dev/shm, run there RAM_THRESHOLD=3D15000000 # ... get_run_path() { local avail_shm avail_shm=3D$(df --output=3Davail /dev/shm | sed 1d) [[ "$avail_shm" -ge "$RAM_THRESHOLD" ]] && \ mkdir -p "/dev/shm/ost" && \ echo "/dev/shm/ost/deployment-$SUITE" || \ echo "$PWD/deployment-$SUITE" } {code} This seems to be 15G so we need to figure out why wasn't this available whe= n these lines ran (These lines are amount the very first things that run wh= en an OST suit starts up, so its unlikely to be cause by anything the suit = is doing) Code quoted above is part of '{{automation/suit.sh}}' in OST: https://gerrit.ovirt.org/gitweb?p=3Dovirt-system-tests.git;a=3Dblob;f=3Daut= omation/suite.sh;hb=3Drefs/heads/master#l28 was (Author: bkorren(a)redhat.com): [~ederevea] OST uses a simple check to determine if to run in RAM or not: {code} # if above RAM_THRESHOLD KBs are available in /dev/shm, run there RAM_THRESHOLD=3D15000000 # ... get_run_path() { local avail_shm avail_shm=3D$(df --output=3Davail /dev/shm | sed 1d) [[ "$avail_shm" -ge "$RAM_THRESHOLD" ]] && \ mkdir -p "/dev/shm/ost" && \ echo "/dev/shm/ost/deployment-$SUITE" || \ echo "$PWD/deployment-$SUITE" } {code} This seems to be 15G so we need to figure out why wasn't this available whe= n these lines ran (These lines are amount the very first things that run wh= en an OST suit starts up, so its unlikely to be cause by anything the suit = is doing) > Increase entropy for hosts > -------------------------- > > Key: OVIRT-1763 > URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1763 > Project: oVirt - virtualization made easy > Issue Type: Bug > Reporter: Dafna Ron > Assignee: infra > > we had a failure in ost that was really hard to debug: http://jenkins.ovi= rt.org/job/ovirt-master_change-queue-tester/3795/ > There are no failures in the logs and the test itself was terminated by a= timeout. > It took the vms a long time to download packages and install and didi see= ms to think that this is due to limited entropy on the physical host. = > we need to review this issue and increase the entropy on the hosts. = -- This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100071) ------------=3D_1510756591-26566-475 Content-Type: text/html; charset=3D"UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 7bit

[ https://ovirt-jira.atlassian.net/browse/OVIRT-1763?page=3Dcom.atlass=
ian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=
=3D35345#comment-35345 ]

Barak Korren edited comment on OVIRT-1763 at 11/15/17 2:36 PM:

[~ederevea] OST uses a simple check to determine if to run in RAM or not= :

{code} # if above RAM_THRESHOLD KBs are available in /dev/shm, run there= RAM_THRESHOLD=3D15000000

# …

get_run_path() {

local avail_shm
avail_shm=3D$(df --output=3Davail /dev/shm | sed 1d)
[[ "$avail_shm" -ge "$RAM_THRESHOLD" ]] && \
    mkdir -p "/dev/shm/ost" && \
    echo "/dev/shm/ost/deployment-$SUITE" || \
    echo "$PWD/deployment-$SUITE"

} {code}

This seems to be 15G so we need to figure out why wasn't this available = when these lines ran (These lines are amount the very first things that run= when an OST suit starts up, so its unlikely to be cause by anything the su= it is doing)

Code quoted above is part of ‘{{automation/suit.sh}}’ in OST= : https://gerrit.= ovirt.org/gitweb?p=3Dovirt-system-tests.git;a=3Dblob;f=3Dautomation/suite.s= h;hb=3Drefs/heads/master#l28

was (Author: bkorren(a)redhat.com): [~ederevea] OST uses a simple check = to determine if to run in RAM or not:

{code} # if above RAM_THRESHOLD KBs are available in /dev/shm, run there= RAM_THRESHOLD=3D15000000

# …

get_run_path() {

local avail_shm
avail_shm=3D$(df --output=3Davail /dev/shm | sed 1d)
[[ "$avail_shm" -ge "$RAM_THRESHOLD" ]] && \
    mkdir -p "/dev/shm/ost" && \
    echo "/dev/shm/ost/deployment-$SUITE" || \
    echo "$PWD/deployment-$SUITE"

} {code}

Increase entropy for hosts
     Key: OVIRT-1763
     URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1763
 Project: oVirt - virtualization made easy
         Issue Type: Bug
Reporter: Dafna Ron
Assignee: infra
we had a failure in ost that was really hard to debug: http://jenki= ns.ovirt.org/job/ovirt-master_change-queue-tester/3795/ There are no fa= ilures in the logs and the test itself was terminated by a timeout. It took= the vms a long time to download packages and install and didi seems to thi= nk that this is due to limited entropy on the physical host. we need to rev= iew this issue and increase the entropy on the hosts.

— This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#1000= 71)

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