Bug 1178031

Summary:	[SNAPSHOT]: fails to create on thin LV with LUKS layer in between
Product:	[Community] GlusterFS	Reporter:	pille <pille+redhat+bugzilla>
Component:	snapshot	Assignee:	bugs <bugs>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	mainline	CC:	bugs, lmohanty, rhinduja, vbellur
Target Milestone:	---	Keywords:	Triaged
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	1183764 1240227 (view as bug list)		Environment:
Last Closed:	2018-11-19 08:13:14 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1240227

Description pille 2015-01-01 17:11:58 UTC

Description of problem:

my bricks are on XFS on LUKS on thin-LV.
creating a shapshot fails.


Steps to Reproduce:
1. create bricks on thin-LV, but with additional LUKS encryption layer
2. gluster snapshot ...

Actual results:

snapshot create: failed: Snapshot is supported only for thin provisioned LV. Ensure that all bricks of storage_www are thinly provisioned LV.
Snapshot command failed


Expected results:

snapshot


Additional info:

[2015-01-01 16:41:35.047033] E [glusterd-snapshot.c:1742:glusterd_is_thinp_brick] 0-management: Failed to get pool name for device /dev/mapper/data
[2015-01-01 16:41:35.047128] E [glusterd-snapshot.c:2081:glusterd_snapshot_create_prevalidate] 0-management: Snapshot is supported only for thin provisioned LV. Ensure that all bricks of storage_www are thinly provisioned LV.
[2015-01-01 16:41:35.047139] W [glusterd-snapshot.c:7013:glusterd_snapshot_prevalidate] 0-management: Snapshot create pre-validation failed
[2015-01-01 16:41:35.047146] W [glusterd-mgmt.c:154:gd_mgmt_v3_pre_validate_fn] 0-management: Snapshot Prevalidate Failed
[2015-01-01 16:41:35.047151] E [glusterd-mgmt.c:675:glusterd_mgmt_v3_pre_validate] 0-management: Pre Validation failed for operation Snapshot on local node
[2015-01-01 16:41:35.047156] E [glusterd-mgmt.c:1850:glusterd_mgmt_v3_initiate_snap_phases] 0-management: Pre Validation Failed

Comment 1 pille 2015-01-16 14:03:47 UTC

hey, i'd like to know what the ETA for this issue is.
we have a tight schedule and need to figure out whether we wait for a solution on your side, or we do the work of reconfiguring the storage, so that the crypto layer is below the thinpool. the trade-off is that we would need to backup the data before and migration in each direction will take two weeks.

Comment 2 rjoseph 2016-08-23 12:33:36 UTC

'GlusterFS-3.6 is nearing its End-Of-Life, only important security bugs still make a chance on getting fixed. Moving this to the mainline 'version'.

Comment 3 Vijay Bellur 2018-11-19 08:13:14 UTC

Thank you for your bug report. Our recommended configuration is to layer LUKS below thin LV. Hence we will not be addressing this bug.