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rhel-system-roles/SOURCES/storage-trim-volume-size.diff

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diff --git a/library/blivet.py b/library/blivet.py
index e927121..f59f821 100644
--- a/library/blivet.py
+++ b/library/blivet.py
@@ -130,6 +130,9 @@ if BLIVET_PACKAGE:
set_up_logging()
log = logging.getLogger(BLIVET_PACKAGE + ".ansible")
+
+MAX_TRIM_PERCENT = 2
+
use_partitions = None # create partitions on pool backing device disks?
disklabel_type = None # user-specified disklabel type
safe_mode = None # do not remove any existing devices or formatting
@@ -445,8 +448,16 @@ class BlivetVolume(BlivetBase):
if not self._device.resizable:
return
- if self._device.format.resizable:
- self._device.format.update_size_info()
+ trim_percent = (1.0 - float(self._device.max_size / size))*100
+ log.debug("resize: size=%s->%s ; trim=%s", self._device.size, size, trim_percent)
+ if size > self._device.max_size and trim_percent <= MAX_TRIM_PERCENT:
+ log.info("adjusting %s resize target from %s to %s to fit in free space",
+ self._volume['name'],
+ size,
+ self._device.max_size)
+ size = self._device.max_size
+ if size == self._device.size:
+ return
if not self._device.min_size <= size <= self._device.max_size:
raise BlivetAnsibleError("volume '%s' cannot be resized to '%s'" % (self._volume['name'], size))
@@ -610,10 +621,18 @@ class BlivetLVMVolume(BlivetVolume):
raise BlivetAnsibleError("invalid size '%s' specified for volume '%s'" % (self._volume['size'], self._volume['name']))
fmt = self._get_format()
+ trim_percent = (1.0 - float(parent.free_space / size))*100
+ log.debug("size: %s ; %s", size, trim_percent)
if size > parent.free_space:
- raise BlivetAnsibleError("specified size for volume '%s' exceeds available space in pool '%s' (%s)" % (size,
- parent.name,
- parent.free_space))
+ if trim_percent > MAX_TRIM_PERCENT:
+ raise BlivetAnsibleError("specified size for volume '%s' exceeds available space in pool '%s' (%s)"
+ % (size, parent.name, parent.free_space))
+ else:
+ log.info("adjusting %s size from %s to %s to fit in %s free space", self._volume['name'],
+ size,
+ parent.free_space,
+ parent.name)
+ size = parent.free_space
try:
device = self._blivet.new_lv(name=self._volume['name'],
diff --git a/tests/tests_create_lv_size_equal_to_vg.yml b/tests/tests_create_lv_size_equal_to_vg.yml
new file mode 100644
index 0000000..21a5788
--- /dev/null
+++ b/tests/tests_create_lv_size_equal_to_vg.yml
@@ -0,0 +1,48 @@
+---
+- hosts: all
+ become: true
+ vars:
+ storage_safe_mode: false
+ mount_location: '/opt/test1'
+ volume_group_size: '10g'
+ lv_size: '10g'
+ unused_disk_subfact: '{{ ansible_devices[unused_disks[0]] }}'
+ disk_size: '{{ unused_disk_subfact.sectors|int *
+ unused_disk_subfact.sectorsize|int }}'
+
+ tasks:
+ - include_role:
+ name: linux-system-roles.storage
+
+ - include_tasks: get_unused_disk.yml
+ vars:
+ min_size: "{{ volume_group_size }}"
+ max_return: 1
+
+ - name: Create one lv which size is equal to vg size
+ include_role:
+ name: linux-system-roles.storage
+ vars:
+ storage_pools:
+ - name: foo
+ disks: "{{ unused_disks }}"
+ volumes:
+ - name: test1
+ size: "{{ lv_size }}"
+ mount_point: "{{ mount_location }}"
+
+ - include_tasks: verify-role-results.yml
+
+ - name: Clean up
+ include_role:
+ name: linux-system-roles.storage
+ vars:
+ storage_pools:
+ - name: foo
+ disks: "{{ unused_disks }}"
+ state: "absent"
+ volumes:
+ - name: test1
+ mount_point: "{{ mount_location }}"
+
+ - include_tasks: verify-role-results.yml
diff --git a/tests/tests_lvm_auto_size_cap.yml b/tests/tests_lvm_auto_size_cap.yml
new file mode 100644
index 0000000..fb17c23
--- /dev/null
+++ b/tests/tests_lvm_auto_size_cap.yml
@@ -0,0 +1,89 @@
+---
+- hosts: all
+ become: true
+
+ tasks:
+ - include_role:
+ name: linux-system-roles.storage
+
+ - include_tasks: get_unused_disk.yml
+ vars:
+ min_size: 10g
+ max_return: 1
+
+ - command: lsblk -b -l --noheadings -o NAME,SIZE
+ register: storage_test_lsblk
+
+ - set_fact:
+ test_disk_size: "{{ storage_test_lsblk.stdout_lines|map('regex_search', '^' + unused_disks[0] + '\\s+\\d+$')|select('string')|first|regex_replace('^\\w+\\s+', '') }}"
+
+ - package:
+ name: bc
+ state: installed
+
+ - command:
+ cmd: bc
+ stdin: "{{ test_disk_size }} *2"
+ register: doubled_size
+
+ - name: Test handling of too-large LVM volume size
+ block:
+ - name: Try to create a pool containing one volume twice the size of the backing disk
+ include_role:
+ name: linux-system-roles.storage
+ vars:
+ storage_pools:
+ - name: foo
+ type: lvm
+ disks: "{{ unused_disks }}"
+ volumes:
+ - name: test1
+ size: "{{ doubled_size.stdout|trim }}"
+ - name: unreachable task
+ fail:
+ msg: UNREACH
+ rescue:
+ - name: Check that we failed in the role
+ assert:
+ that:
+ - ansible_failed_result.msg != 'UNREACH'
+ - blivet_output.failed and
+ blivet_output.msg|regex_search('specified size for volume.+exceeds available')
+ msg: "Role has not failed when it should have"
+
+ - name: Create a pool containing one volume the same size as the backing disk
+ include_role:
+ name: linux-system-roles.storage
+ vars:
+ storage_pools:
+ - name: foo
+ disks: "{{ unused_disks }}"
+ volumes:
+ - name: test1
+ size: "{{ test_disk_size }}"
+
+ - include_tasks: verify-role-results.yml
+
+ - name: Repeat the previous invocation to verify idempotence
+ include_role:
+ name: linux-system-roles.storage
+ vars:
+ storage_pools:
+ - name: foo
+ type: lvm
+ disks: "{{ unused_disks }}"
+ volumes:
+ - name: test1
+ size: "{{ test_disk_size }}"
+
+ - include_tasks: verify-role-results.yml
+
+ - name: Clean up
+ include_role:
+ name: linux-system-roles.storage
+ vars:
+ storage_pools:
+ - name: foo
+ disks: "{{ unused_disks }}"
+ state: absent
+ volumes: []
diff --git a/tests/tests_lvm_errors.yml b/tests/tests_lvm_errors.yml
index 37d41dc..e8dc4f4 100644
--- a/tests/tests_lvm_errors.yml
+++ b/tests/tests_lvm_errors.yml
@@ -11,8 +11,6 @@
- '/non/existent/disk'
invalid_size: 'xyz GiB'
unused_disk_subfact: '{{ ansible_devices[unused_disks[0]] }}'
- too_large_size: '{{ (unused_disk_subfact.sectors|int + 1) *
- unused_disk_subfact.sectorsize|int }}'
tasks:
- include_role:
@@ -86,39 +84,6 @@
- ansible_failed_result.msg != 'UNREACH'
msg: "Role has not failed when it should have"
- # the following does not work properly
- # - name: Verify the output
- # assert:
- # that: "{{ blivet_output.failed and
- # blivet_output.msg|regex_search('invalid size.+for volume') and
- # not blivet_output.changed }}"
- # msg: "Unexpected behavior w/ invalid volume size"
-
- - name: Test for correct handling of too-large volume size.
- block:
- - name: Try to create LVM with a too-large volume size.
- include_role:
- name: linux-system-roles.storage
- vars:
- storage_pools:
- - name: foo
- disks: "{{ unused_disks }}"
- volumes:
- - name: test1
- size: "{{ too_large_size }}"
- mount_point: "{{ mount_location1 }}"
-
- - name: unreachable task
- fail:
- msg: UNREACH
-
- rescue:
- - name: Check that we failed in the role
- assert:
- that:
- - ansible_failed_result.msg != 'UNREACH'
- msg: "Role has not failed when it should have"
-
# the following does not work properly
# - name: Verify the output
# assert:
@@ -138,7 +103,7 @@
disks: "{{ unused_disks[0] }}"
volumes:
- name: test1
- size: "{{ too_large_size }}"
+ size: "{{ volume_size }}"
mount_point: "{{ mount_location1 }}"
- name: unreachable task
@@ -171,7 +136,7 @@
disks: []
volumes:
- name: test1
- size: "{{ too_large_size }}"
+ size: "{{ volume1_size }}"
mount_point: "{{ mount_location1 }}"
- name: unreachable task
diff --git a/tests/tests_misc.yml b/tests/tests_misc.yml
index a69ee98..3139bc7 100644
--- a/tests/tests_misc.yml
+++ b/tests/tests_misc.yml
@@ -7,7 +7,7 @@
volume_group_size: '5g'
volume1_size: '4g'
unused_disk_subfact: '{{ ansible_devices[unused_disks[0]] }}'
- too_large_size: '{{ (unused_disk_subfact.sectors|int + 1) *
+ too_large_size: '{{ (unused_disk_subfact.sectors|int * 1.2) *
unused_disk_subfact.sectorsize|int }}'
tasks:
diff --git a/tests/tests_resize.yml b/tests/tests_resize.yml
index 9eeb2b9..209d129 100644
--- a/tests/tests_resize.yml
+++ b/tests/tests_resize.yml
@@ -9,7 +9,7 @@
invalid_size1: 'xyz GiB'
invalid_size2: 'none'
unused_disk_subfact: '{{ ansible_devices[unused_disks[0]] }}'
- too_large_size: '{{ (unused_disk_subfact.sectors|int + 1) *
+ too_large_size: '{{ unused_disk_subfact.sectors|int * 1.2 *
unused_disk_subfact.sectorsize|int }}'
disk_size: '{{ unused_disk_subfact.sectors|int *
unused_disk_subfact.sectorsize|int }}'
@@ -122,23 +122,7 @@
size: "{{ disk_size }}"
mount_point: "{{ mount_location }}"
- - name: Unreachable task
- fail:
- msg: UNREACH
-
- rescue:
- - name: Check that we failed in the role
- assert:
- that:
- - ansible_failed_result.msg != 'UNREACH'
- msg: "Role has not failed when it should have"
-
- - name: Verify the output
- assert:
- that: "blivet_output.failed and
- blivet_output.msg|regex_search('volume.+cannot be resized to.+') and
- not blivet_output.changed"
- msg: "Unexpected behavior w/ invalid volume size"
+ - include_tasks: verify-role-results.yml
- name: Test for correct handling of invalid size specification
block:
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