DRBD - Revision history

Tony at 07:35, 18 September 2024

2024-09-18T07:35:05Z

2023-02-02T09:30:44Z

Mapping resource name and device

← Older revision		Revision as of 09:30, 2 February 2023
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	ls -al /dev/drbd/<LVM volume group name>/by-disk/		ls -al /dev/drbd/<LVM volume group name>/by-disk/

	~~ ~~		ls -al /dev/drbd/by-res/

	~~ ~~

	== Renaming DRBD resource ==		== Renaming DRBD resource ==

2022-11-03T15:29:47Z

← Older revision		Revision as of 15:29, 3 November 2022
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	== 1: State change failed: (-2) Need access to UpToDate data ==		== 1: State change failed: (-2) Need access to UpToDate data ==

	when you get that ~~tryinng~~ to make a node/resource primary, try		when you get that trying to make a node/resource primary, try

	drbdadm primary drbdX --force		drbdadm primary drbdX --force

2022-03-02T10:54:20Z

← Older revision		Revision as of 10:54, 2 March 2022
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	*[https://www.linbit.com/drbd-user-guide/users-guide-drbd-8-4/#s-internal-meta-data Internal meta data]		*[https://www.linbit.com/drbd-user-guide/users-guide-drbd-8-4/#s-internal-meta-data Internal meta data]
	*[https://www.howtoforge.com/high-availability-nfs-with-drbd-plus-heartbeat High Availability NFS With DRBD + Heartbeat ]		*[https://www.howtoforge.com/high-availability-nfs-with-drbd-plus-heartbeat High Availability NFS With DRBD + Heartbeat ]
			*[https://help.ubuntu.com/community/HighlyAvailableNFS Higly Available NFS on Ubuntu]

	*[https://docs.linbit.com/doc/users-guide-84/s-configure-sync-rate/ Configure sync rate]		*[https://docs.linbit.com/doc/users-guide-84/s-configure-sync-rate/ Configure sync rate]

2022-03-02T10:42:25Z

FAQ

← Older revision		Revision as of 10:42, 2 March 2022
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	Most likely split brain issue, check dmesg etc		Most likely split brain issue, check dmesg etc

	== wfconnection ==		== wfconnection standalone==

	Could be split brain situation		Could be split brain situation

	drbdadm -- --discard-my-data connect resource		drbdadm -- --discard-my-data connect resource

			==Both nodes in WFConnection==
			Most like network connection problem

	== cs:StandAlone ro:Primary/Unknown ds:UpToDate/DUnknown ==		== cs:StandAlone ro:Primary/Unknown ds:UpToDate/DUnknown ==

2022-03-01T09:52:05Z

← Older revision		Revision as of 09:52, 1 March 2022
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	*[https://www.linbit.com/downloads/tech-guides/DRBD8_HA_iSCSI_Storage_with_drbd_and_Pacemaker_on_RHEL7.pdf HA iSCSI with drbd and pacemaker]		*[https://www.linbit.com/downloads/tech-guides/DRBD8_HA_iSCSI_Storage_with_drbd_and_Pacemaker_on_RHEL7.pdf HA iSCSI with drbd and pacemaker]
	*[https://www.linbit.com/drbd-user-guide/users-guide-drbd-8-4/#s-internal-meta-data Internal meta data]		*[https://www.linbit.com/drbd-user-guide/users-guide-drbd-8-4/#s-internal-meta-data Internal meta data]
			*[https://www.howtoforge.com/high-availability-nfs-with-drbd-plus-heartbeat High Availability NFS With DRBD + Heartbeat ]

	*[https://docs.linbit.com/doc/users-guide-84/s-configure-sync-rate/ Configure sync rate]		*[https://docs.linbit.com/doc/users-guide-84/s-configure-sync-rate/ Configure sync rate]

2021-10-06T14:18:25Z

← Older revision		Revision as of 14:18, 6 October 2021
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	lvrename VG oldresource newresource		lvrename VG oldresource newresource

	== Remove drbd resource ==		== Remove drbd resource ==

	drbdadm down myresource		drbdadm down myresource

	~~remove myresource.res from the nodes~~
	~~drbdadm down myresource~~
	remove resource files		remove resource files




	== Show statistics ==		== Show statistics ==

2021-10-06T13:56:59Z

← Older revision		Revision as of 13:56, 6 October 2021
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	*http://sourceware.org/cluster/wiki/DRBD_Cookbook		*http://sourceware.org/cluster/wiki/DRBD_Cookbook
	*http://www.piemontewireless.net/Storage_on_Cluster_DRBD_and_GFS2		*http://www.piemontewireless.net/Storage_on_Cluster_DRBD_and_GFS2



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	= Cheatsheet =		= Cheatsheet =


	== HOWTO create a drbd resource ==		== HOWTO create a drbd resource ==
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	cat /proc/drbd		cat /proc/drbd

			Then:

	~~Then:~~
	drbdadm up test3		drbdadm up test3


	should give:		should give:
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	== Renaming DRBD resource ==		== Renaming DRBD resource ==
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	lvrename VG oldresource newresource		lvrename VG oldresource newresource
			== Remove drbd resource ==
			drbdadm down myresource

			remove myresource.res from the nodes
			drbdadm down myresource
			remove resource files




	== Show statistics ==		== Show statistics ==

	drbdsetup status --verbose --statistics		drbdsetup status --verbose --statistics


	= FAQ =		= FAQ =

2021-10-06T13:27:34Z

← Older revision		Revision as of 13:27, 6 October 2021
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	== Show statistics ==		== Show statistics ==
	drbdsetup status --verbose --statistics		drbdsetup status --verbose --statistics


	= FAQ =		= FAQ =
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	== sync is slow ==		== sync is slow ==
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	??		??

			== resource XYX cannot run anwhere ==
			If you see that in log, it probably means it's a disabled resource in a disabled group
			CHECK THIS

	== drbd: error sending genl reply ==		== drbd: error sending genl reply ==
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	( AL means "activity log", btw )		( AL means "activity log", btw )



			== log messages ==

			=== sock_sendmsg time expired, ko=6 ===

	~~==log messages==~~
	~~===sock_sendmsg time expired, ko=6===~~
	latency problem?		latency problem?

2021-08-20T12:05:35Z

← Older revision		Revision as of 12:05, 20 August 2021
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	== Renaming DRBD resource ==		== Renaming DRBD resource ==

	Is a simple matter of renaming the oldresource.res file and updating its contents. Rember to first		Is a simple matter of renaming the oldresource.res file and updating its contents. Rember to first (on one node is enough):

	drbdadm down myresource		drbdadm down myresource