From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Ren Message-ID: Date: Mon, 20 Nov 2017 18:35:20 +0800 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Language: en-US Subject: [linux-lvm] lvmlockd: how to convert lock_type from sanlock to dlm? Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="utf-8"; format="flowed" To: David Teigland Cc: LVM general discussion and development Hello David, On my testing cluster,  the lvmlockd was firstly used with sanlock and everything was OK. After some play, I want to change the "sanlock" lock_type of a VG into "dlm" locktype. With dlm_controld running, I tried as following, but still failed. 1.  Performed as the "Changing dlm cluster name" section of `man lvmlockd`:     # dlm_tool ls             // no lockspace available     # vgs        Reading VG vg1 without a lock.       VG  #PV #LV #SN Attr   VSize  VFree       vg1   1   1   0 wz--ns 19.97g 18.72g     # vgchange --lock-type none --force vg1       // the cmd comes from `man lvmlockd`   Command does not accept option: --force. 2. Tried with 'global/locking_type=0': # vgchange --config 'global/locking_type=0' --lock-type dlm vg1   WARNING: Locking disabled. Be careful! This could corrupt your metadata.   ERROR: configuration setting use_lvmlockd cannot be used with clustered locking_type 3. The error message is strange because the locking_type=0 in the command line and locking_type=1 in lvm.conf. Not sure if it's a real problem or am doing something wrong? Regards, Eric