MAAS

snap upgrade requires 2x disk space

Bug #1880755 reported by Nick Niehoff
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
MAAS
Fix Released
Medium
Alberto Donato
MAAS 2.8.0rc2

Bug Description

I just refreshed my snap on a rack controller from 2.7.0 to 2.7.1. I have about 11G of images at the moment. During the upgrade I noticed the disk space nearly double:

du -sh /var/snap/maas/*/var/lib/maas/boot-resources/*
11G /var/snap/maas/5229/var/lib/maas/boot-resources/cache
512 /var/snap/maas/5229/var/lib/maas/boot-resources/current
131K /var/snap/maas/5229/var/lib/maas/boot-resources/snapshot-20200525-185608
9.9G /var/snap/maas/6633/var/lib/maas/boot-resources/cache
512 /var/snap/maas/6633/var/lib/maas/boot-resources/current
75K /var/snap/maas/6633/var/lib/maas/boot-resources/snapshot-20200525-185608

Is it possible to store the boot-resources outside of the current snap version maybe in /var/snap/maas/common instead? I'm about ready to do a lot of image testing and will have 60+ of images at any 1 time. I don't have the disk space to have my rack controllers all have multiple snap versions all with multiple image copies on them, this doesn't scale.

Related branches

~ack/maas:snap-move-var-lib-maas-2.8
Alberto Donato: Approve
Diff: 839 lines (+145/-93)
36 files modified
Makefile (+2/-1)
services/http/run (+1/-1)
snap/hooks/install (+12/-2)
snap/local/tree/bin/maas-deb-migrate (+4/-5)
snap/local/tree/bin/run-dhcpd (+5/-5)
snap/local/tree/bin/run-dhcpd6 (+5/-5)
snap/local/tree/bin/run-rackd (+4/-3)
snap/local/tree/bin/run-regiond (+1/-0)
snap/local/tree/helpers/migrate-deb-to-snap (+1/-1)
snap/snapcraft.yaml (+2/-1)
src/maascli/__init__.py (+1/-0)
src/maasserver/ipc.py (+2/-4)
src/maasserver/region_script.py (+1/-0)
src/maasserver/tests/test_ipc.py (+3/-3)
src/maastesting/fixtures.py (+12/-0)
src/maastesting/scripts.py (+1/-0)
src/maastesting/testcase.py (+7/-1)
src/provisioningserver/auth.py (+2/-2)
src/provisioningserver/config.py (+2/-4)
src/provisioningserver/dhcp/__init__.py (+13/-13)
src/provisioningserver/dhcp/config.py (+2/-2)
src/provisioningserver/path.py (+13/-1)
src/provisioningserver/plugin.py (+2/-4)
src/provisioningserver/rack_script.py (+3/-0)
src/provisioningserver/rackdservices/lease_socket_service.py (+2/-2)
src/provisioningserver/rpc/clusterservice.py (+2/-2)
src/provisioningserver/rpc/tests/test_clusterservice.py (+2/-2)
src/provisioningserver/security.py (+2/-2)
src/provisioningserver/tests/test_config.py (+3/-4)
src/provisioningserver/tests/test_path.py (+15/-0)
src/provisioningserver/tests/test_security.py (+3/-3)
src/provisioningserver/utils/debug.py (+4/-6)
src/provisioningserver/utils/env.py (+3/-3)
src/provisioningserver/utils/tests/test_debug.py (+3/-6)
src/provisioningserver/utils/tests/test_env.py (+2/-2)
src/provisioningserver/utils/tests/test_fs.py (+3/-3)
~ack/maas:1880755-var-lib-maas-to-common
MAAS Lander: Approve
Björn Tillenius: Approve
Diff: 839 lines (+145/-93)
36 files modified
Makefile (+2/-1)
services/http/run (+1/-1)
snap/hooks/install (+12/-2)
snap/local/tree/bin/maas-deb-migrate (+4/-5)
snap/local/tree/bin/run-dhcpd (+5/-5)
snap/local/tree/bin/run-dhcpd6 (+5/-5)
snap/local/tree/bin/run-rackd (+4/-3)
snap/local/tree/bin/run-regiond (+1/-0)
snap/local/tree/helpers/migrate-deb-to-snap (+1/-1)
snap/snapcraft.yaml (+2/-1)
src/maascli/__init__.py (+1/-0)
src/maasserver/ipc.py (+2/-4)
src/maasserver/region_script.py (+1/-0)
src/maasserver/tests/test_ipc.py (+3/-3)
src/maastesting/fixtures.py (+12/-0)
src/maastesting/scripts.py (+1/-0)
src/maastesting/testcase.py (+7/-1)
src/provisioningserver/auth.py (+2/-2)
src/provisioningserver/config.py (+2/-4)
src/provisioningserver/dhcp/__init__.py (+13/-13)
src/provisioningserver/dhcp/config.py (+2/-2)
src/provisioningserver/path.py (+13/-1)
src/provisioningserver/plugin.py (+2/-4)
src/provisioningserver/rack_script.py (+3/-0)
src/provisioningserver/rackdservices/lease_socket_service.py (+2/-2)
src/provisioningserver/rpc/clusterservice.py (+2/-2)
src/provisioningserver/rpc/tests/test_clusterservice.py (+2/-2)
src/provisioningserver/security.py (+2/-2)
src/provisioningserver/tests/test_config.py (+3/-4)
src/provisioningserver/tests/test_path.py (+15/-0)
src/provisioningserver/tests/test_security.py (+3/-3)
src/provisioningserver/utils/debug.py (+4/-6)
src/provisioningserver/utils/env.py (+3/-3)
src/provisioningserver/utils/tests/test_debug.py (+3/-6)
src/provisioningserver/utils/tests/test_env.py (+2/-2)
src/provisioningserver/utils/tests/test_fs.py (+3/-3)
Revision history for this message
Lee Trager (ltrager) wrote :

/var/lib/maas contains resources that MAAS needs on the filesystem to operate. These files are forwards and backwards compatible, I can't remember a time when we made a change to any of these files that would break another version of MAAS.

We should move all of /var/snap/maas/*/var/lib/maas into /var/snap/maas/common.

Changed in maas:
status: New → Triaged
milestone: none → 2.8.0rc1
importance: Undecided → Medium
Alberto Donato (ack)
Changed in maas:
assignee: nobody → Alberto Donato (ack)
Alberto Donato (ack)
summary: - [snap] snap upgrade requires 2x disk space
+ snap upgrade requires 2x disk space
Alberto Donato (ack)
Changed in maas:
milestone: 2.8.0rc1 → 2.8.0
Alberto Donato (ack)
Changed in maas:
status: Triaged → In Progress
MAAS Lander (maas-lander)
Changed in maas:
status: In Progress → Fix Committed
Alberto Donato (ack)
Changed in maas:
milestone: 2.8.0 → 2.8.0rc2
Alberto Donato (ack)
Changed in maas:
status: Fix Committed → Fix Released
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