site stats

Rbd exclusive lock

WebOct 6, 2024 · RBD mirroring uses exclusive locks and the journaling feature to record all modifications to an image in the order in which they occur. ... [ceph: root@site-a /]# rbd create image1 --size 1024 --pool data --image-feature exclusive-lock,journaling. Note. If exclusive-lock is already enabled, use journaling as the only argument, ... WebThe exclusive-lock feature must be enabled to enable persistent write log cache. The cache can be loaded only after the exclusive-lock is acquired. Exclusive-locks are enabled on newly created images by default unless overridden by the rbd_default_features configuration option or the --image-feature flag for the rbd create command.

转：ceph rbd的新特性_ceph layering_nh_clz的博客-CSDN博客

WebDec 19, 2024 · Subject: RBD Exclusive locks overwritten; From: "Garuti, Lorenzo" Date: Tue, 19 Dec 2024 16:33:28 +0100; Hi all, we are having a very strange behavior with exclusive locks. We have one image called test inside a pool called app. This is the output of rbd status app/test. WebMar 24, 2024 · The current rbd only supports the layering feature for the rbd image. Add exclusive-lock and journaling image features for the rbd. Signed-off-by: woohhan … ticker cxse https://ristorantealringraziamento.com

Ceph rbd exclusive-lock - LXD - Linux Containers Forum

WebIn doing so, exclusive locks prevent multiple compute nodes from concurrently accessing the guest disk. You can use OpenStack Glance to store images as Ceph Block Devices, ... Ceph block devices live within the rbd pool. You may use any suitable pool by specifying it explicitly. We recommend creating a pool for Cinder and a pool for Glance. WebTake an exclusive lock on the image. Raises. ImageBusy if a different client or cookie locked it ImageExists if the same client and cookie locked it. lock_get_owners (self) ¶ Iterate over the lock owners of an image. Returns. LockOwnerIterator. lock_release (self) ¶ Release a managed lock on the image that was previously acquired. lock_shared ... WebMar 10, 2024 · I can get during the new active target gateway was talking to rbd the old active target gateway cannot write because of the RBD exclusive-lock But after the new target gateway done the writes,if the old target gateway had some blocked io during the failover,cant it then get the lock and overwrite the new writes? ticker cwst

Chapter 2. Block Device Commands Red Hat Ceph Storage 3

Category:[ceph-users] iSCSI Multipath (Load Balancing) vs RBD Exclusive …

Tags:Rbd exclusive lock

Rbd exclusive lock

Chapter 2. Block Device Commands - Red Hat Customer Portal

WebNov 23, 2024 · root@miles:~# rbd info lxdpool/container_fileserver rbd image 'container_fileserver': size 19 GiB in 4769 objects order 22 (4 MiB objects) … WebJun 6, 2016 · [root@rbd-client ~]# rbd feature enable data/image1 exclusive-lock,journaling. To enable exclusive-lock and journaling on all new images by default, add the following setting to the Ceph configuration file: rbd_default_features = 125; Choose the mirroring mode, either pool or image mode. Important ...

Rbd exclusive lock

Did you know?

WebVersion-Release number of selected component (if applicable): any, ceph since release: Jewel "exclusive-lock" is enabled by default. How reproducible: very Steps to Reproduce: 1. create vm with ceph rbd disk image 2. virsh destroy vm 3. virsh start vm and put the vm under heavy disk write I/O Actual results: task jbd2/disk-8:171_blocked for more than 120 …

WebCreate an rbd image with exclusive-lock feature rbd create disk02 --size 5120 --image-feature layering,exclusive-lock --image-format 2 # rbd info disk02 rbd image 'disk02': size … WebThe lock-id is an arbitrary name for the user's convenience. By default, this is an exclusive lock, meaning it will fail if the image is already locked. The --shared option changes this …

WebCreate an rbd image with exclusive-lock feature rbd create disk02 --size 5120 --image-feature layering,exclusive-lock --image-format 2 # rbd info disk02 rbd image 'disk02': size 5120 MB in 1280 objects order 22 (4096 kB objects) block_name_prefix: rbd_data.10ae2ae8944a format: 2 features: layering, exclusive-lock flags: 2. Create … WebMar 11, 2024 · > > > > As discussed in this thread, for active/passive, upon initiator > > failover, we used the RBD exclusive-lock feature to blacklist the old > > "active" iSCSI target gateway so that it cannot talk w/ the Ceph > > cluster before new writes are accepted on the new target gateway.

WebJan 5, 2024 · High availability is accomplished with the help of RBD locking (exclusive lock feature), Ceph’s watch notify feature and the initiator’s multipathing stack. Multipath allows us to detect a failure and reroute affected IOs through a path on a different target. Native HA is obtained by deploying multiple collocated iSCSI target on OSD nodes ...

Weblock add [--shared lock-tag] image-spec lock-id. Lock an image. The lock-id is an arbitrary name for the user’s convenience. By default, this is an exclusive lock, meaning it will fail if … ticker cyblWebMar 15, 2024 · Subject: Re: iSCSI Multipath (Load Balancing) vs RBD Exclusive Lock; From: Mike Christie ; Date: Thu, 15 Mar 2024 02:48:42 -0500; Cc: Lazuardi Nasution , Ceph Users , shadow_lin ; In-reply-to: … ticker cyaWebMar 25, 2024 · The way --exclusive is implemented is the client simply > > refuses to release the lock when it gets the request to do so. This > > isn't tracked on the OSD side in any way so "rbd lock ls" doesn't have > > that information. > > > > > > if I understand correctly then the lock itself is an OSD "flag" but whether > > is treated as shared or ... tickerdb/tickerentry/home