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. 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?
RBD Exclusive locks overwritten — CEPH Filesystem Users
WebMay 15, 2024 · 背景 exclusive-lock为rbd image的一个feature,是一个分布式锁,主要用于防止多个客户端同时写入image导致数据不一致问题。基本概念介绍见Ceph官方文档即可 … 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 … how many subsets of s have at most 3 elements
Ceph rbd exclusive-lock - LXD - Linux Containers Forum
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 23, 2024 · You can disable features unsupported by >> the kernel with "rbd feature disable pool/truc object-map fast-diff >> deep-flatten". >> In some cases useful info is found in syslog - try "dmesg tail". >> rbd: map failed: (6) No such device or address >> # dmesg tail -1 >> [1108045.667333] rbd: image truc: image uses unsupported features: 0x38 ... 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. how did they leave the moon