Memory reporting incorrect values

fred974

It would be great to have a bit for details on the memory so we can monitor the system better.

fred974

@yann said in Memory reporting incorrect values:

@fred974 the tools should be reporting the value from MemAvailable, so buffer/cache should not be considered as in-use.

Doesn't seem to be the case

yann

@fred974 right, it is reporting MemFree here.

What does xenstore ls attr/PVAddons show for this VM? And which kernel version is it using?

Old xe-guest-utilities before v7.30 indeed reported MemFree, which XenServer then improved in v8.4 to still report something for kernels older than 3.14 which did not have MemAvailable yet, but Ubuntu 22.04 ships a decently-recent kernel, so I suspect it would be rather due to an old xe-guest-utilities.

fred974

@yann said in Memory reporting incorrect values:

What does xenstore ls attr/PVAddons show for this VM? And which kernel version is it using?

BuildVersion = "0"
Installed = "1"
MajorVersion = "6"
MicroVersion = "80"
MinorVersion = "6"

hostnamectl status

   Static hostname: WEB1-OLS-QHUK
Transient hostname: web1-ols-qh-uk
         Icon name: computer-vm
           Chassis: vm
        Machine ID: 3b1da9b8e5cf4ecda845219bxxx
           Boot ID: 19308dbfd7d347c699985e82xxx
    Virtualization: xen
  Operating System: Ubuntu 22.04.5 LTS              
            Kernel: Linux 5.15.0-128-generic
      Architecture: x86-64
   Hardware Vendor: Xen
    Hardware Model: HVM domU

yann

@fred974 v6.80.6 is definitely very old, and did report MemFree, we ship v7.30 with XCP-ng 8.2. You will likely want to update it, from the "XCP-ng tools" SR.

fred974

@yann said in Memory reporting incorrect values:

@fred974 v6.80.6 is definitely very old, and did report MemFree, we ship v7.30 with XCP-ng 8.2. You will likely want to update it, from the "XCP-ng tools" SR.

Probably because I installed xe-guest-utilities from ububtu repo.. I tried to update from the CD and got the following error:
bash /mnt/Linux/install.sh

Detected `Ubuntu 22.04.5 LTS' (ubuntu version 22).

The following changes will be made to this Virtual Machine:
  * update arp_notify sysctl.
  * packages to be installed/upgraded:
    - xe-guest-utilities_7.30.0-12_amd64.deb

Continue? [y/n] y

(Reading database ... 136958 files and directories currently installed.)
Preparing to unpack .../xe-guest-utilities_7.30.0-12_amd64.deb ...
Unpacking xe-guest-utilities (7.30.0-12) over (7.20.2-0ubuntu1~22.04.2) ...
dpkg: error processing archive /mnt/Linux/xe-guest-utilities_7.30.0-12_amd64.deb (--install):
 trying to overwrite '/usr/bin/xenstore', which is also in package xenstore-utils 4.16.0-1~ubuntu2.1
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Errors were encountered while processing:
 /mnt/Linux/xe-guest-utilities_7.30.0-12_amd64.deb

Could anyone advice of how to fix this issue? I tried apt remove xe-guest-utilities and got the same error

yann

@fred974 there is an undeclared conflict between the xe-guest-utilities in the ISO and xenstore-utils, you can install the former after removing the latter (but yes, it is a problem, the Go implementation of xenstore tools should not be in this package).

fred974

@yann I removed the tools using apt remove xe-guest-utilities and tried to install from the cd and had the same error
apt remove xe-guest-utilities

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following packages were automatically installed and are no longer required:
  dbconfig-common dbconfig-mysql icc-profiles-free libaprutil1-dbd-sqlite3 libaprutil1-ldap libjs-bootstrap4 libjs-codemirror libjs-jquery-mousewheel libjs-jquery-timepicker libjs-jquery-ui libjs-popper.js libjs-sizzle liblua5.3-0 libmcrypt4 node-jquery php-common php-google-recaptcha php-mariadb-mysql-kbs
  php-nikic-fast-route php-phpmyadmin-motranslator php-phpmyadmin-shapefile php-phpseclib php-psr-cache php-psr-container php-psr-log php-symfony-cache php-symfony-cache-contracts php-symfony-dependency-injection php-symfony-deprecation-contracts php-symfony-expression-language php-symfony-polyfill-php80
  php-symfony-polyfill-php81 php-symfony-service-contracts php-symfony-var-exporter php-tcpdf ssl-cert
Use 'apt autoremove' to remove them.
The following packages will be REMOVED:
  xe-guest-utilities
0 upgraded, 0 newly installed, 1 to remove and 16 not upgraded.
After this operation, 1889 kB disk space will be freed.
N: Ignoring file 'mariadb.list.old_1' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
Do you want to continue? [Y/n] y
(Reading database ... 136958 files and directories currently installed.)
Removing xe-guest-utilities (7.20.2-0ubuntu1~22.04.2) ...
needrestart is being skipped since dpkg has failed
root@WEB1-OLS-QHUK:/home/fetheve/Linux# apt autoremove
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following packages will be REMOVED:
  dbconfig-common dbconfig-mysql icc-profiles-free libaprutil1-dbd-sqlite3 libaprutil1-ldap libjs-bootstrap4 libjs-codemirror libjs-jquery-mousewheel libjs-jquery-timepicker libjs-jquery-ui libjs-popper.js libjs-sizzle liblua5.3-0 libmcrypt4 node-jquery php-common php-google-recaptcha php-mariadb-mysql-kbs
  php-nikic-fast-route php-phpmyadmin-motranslator php-phpmyadmin-shapefile php-phpseclib php-psr-cache php-psr-container php-psr-log php-symfony-cache php-symfony-cache-contracts php-symfony-dependency-injection php-symfony-deprecation-contracts php-symfony-expression-language php-symfony-polyfill-php80
  php-symfony-polyfill-php81 php-symfony-service-contracts php-symfony-var-exporter php-tcpdf ssl-cert
0 upgraded, 0 newly installed, 36 to remove and 15 not upgraded.
After this operation, 42.0 MB disk space will be freed.
N: Ignoring file 'mariadb.list.old_1' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
Do you want to continue? [Y/n] y
(Reading database ... 136950 files and directories currently installed.)
Removing dbconfig-mysql (2.0.21) ...
Removing dbconfig-common (2.0.21) ...
Removing php-tcpdf (6.4.4+dfsg1-1) ...
Removing icc-profiles-free (2.0.1+dfsg-1.1) ...
Removing libaprutil1-dbd-sqlite3:amd64 (1.6.1-5ubuntu4.22.04.2) ...
Removing libaprutil1-ldap:amd64 (1.6.1-5ubuntu4.22.04.2) ...
Removing libjs-bootstrap4 (4.6.0+dfsg1-4) ...
Removing libjs-codemirror (5.65.0+~cs5.83.9-1) ...
Removing libjs-jquery-mousewheel (1:3.1.13-5) ...
Removing libjs-jquery-timepicker (1.6.3-1) ...
Removing libjs-jquery-ui (1.13.1+dfsg-1) ...
Removing libjs-popper.js (1.16.1+ds-5) ...
Removing libjs-sizzle (2.3.6+ds+~2.3.3-1) ...
Removing liblua5.3-0:amd64 (5.3.6-1build1) ...
Removing libmcrypt4 (2.5.8-7) ...
Removing node-jquery (3.6.0+dfsg+~3.5.13-1) ...
Removing php-phpmyadmin-motranslator (5.2.0-1build1) ...
Removing php-symfony-expression-language (5.4.4+dfsg-1ubuntu8) ...
Removing php-symfony-cache (5.4.4+dfsg-1ubuntu8) ...
Removing php-symfony-var-exporter (5.4.4+dfsg-1ubuntu8) ...
Removing php-symfony-dependency-injection (5.4.4+dfsg-1ubuntu8) ...
Removing php-symfony-service-contracts (2.4.0-1ubuntu2) ...
Removing php-google-recaptcha (1.2.4-3) ...
Removing php-mariadb-mysql-kbs (1.2.12-1) ...
Removing php-nikic-fast-route (1.3.0-3) ...
Removing php-phpmyadmin-shapefile (2.1-5) ...
Removing php-phpseclib (2.0.36-1) ...
Removing php-symfony-cache-contracts (2.4.0-1ubuntu2) ...
Removing php-psr-cache (3.0.0-1) ...
Removing php-psr-container (2.0.2-1) ...
Removing php-psr-log (3.0.0-1) ...
Removing php-symfony-deprecation-contracts (2.4.0-1ubuntu2) ...
Removing php-symfony-polyfill-php80 (1.24.0-1ubuntu2) ...
Removing php-symfony-polyfill-php81 (1.24.0-1ubuntu2) ...
Removing ssl-cert (1.1.2) ...
Removing php-common (2:92ubuntu1) ...
Warning: Stopping phpsessionclean.service, but it can still be activated by:
  phpsessionclean.timer
Processing triggers for man-db (2.10.2-1) ...
Processing triggers for libc-bin (2.35-0ubuntu3.8) ...
Scanning processes...                                                                                                                                                                                                                                                                                                       
Scanning linux images...                                                                                                                                                                                                                                                                                                    

Running kernel seems to be up-to-date.

No services need to be restarted.

No containers need to be restarted.

No user sessions are running outdated binaries.

No VM guests are running outdated hypervisor (qemu) binaries on this host.

bash /mnt/Linux/install.sh

Detected `Ubuntu 22.04.5 LTS' (ubuntu version 22).

The following changes will be made to this Virtual Machine:
  * update arp_notify sysctl.
  * packages to be installed/upgraded:
    - xe-guest-utilities_7.30.0-12_amd64.deb

Continue? [y/n] y

Selecting previously unselected package xe-guest-utilities.
(Reading database ... 134088 files and directories currently installed.)
Preparing to unpack .../xe-guest-utilities_7.30.0-12_amd64.deb ...
Unpacking xe-guest-utilities (7.30.0-12) ...
dpkg: error processing archive /mnt/Linux/xe-guest-utilities_7.30.0-12_amd64.deb (--install):
 trying to overwrite '/usr/bin/xenstore', which is also in package xenstore-utils 4.16.0-1~ubuntu2.1
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Errors were encountered while processing:
 /mnt/Linux/xe-guest-utilities_7.30.0-12_amd64.deb

How can I fix this?

fred974

@fred974 said in Memory reporting incorrect values:

xenstore-utils

apt remove xenstore-utils fix the installation issue.

fred974

Its seem to be reporting correctly now. Thank you all for your help.

olivierlambert

Great news