mirror of https://github.com/apache/cloudstack.git
ce9793c0be
This PR enhances the existing CLVM implementation which was based on the deprecated CLVM technology which was based on corosync/pacemaker. With RHEL 7 having reached EOL, CLVM seems to be broken. CLVM supports RAW volumes on LVM , where as CLVM_NG support QCOW2 on LVM. Further details: https://cwiki.apache.org/confluence/display/CLOUDSTACK/Modernized+CLVM%3A+Enhancements+and+CLVM_NG+support NOTE: On testing - it was identified that incremental snapshots for clvm-ng do not work as expected. As of now it's been removed from scope. So, CLVM and CLVM_NG would only support full snapshots. * add support for proper cleanup of snapshots and prevent vol snapshot of running vm * remove snap vol restriction for sunning vms * refactor clvm code * add support for live migration * add support for migrating lvm lock * clvm deletion called explicitly * made necessary changes to allow migration of lock and deletion of detached volumes * fix create vol from snap and attach * add support to revert snapshot for clvm * add support to revert snapshot for clvm * make zero fill configurable * make setting non-dynamic & fix test * fix locking at vol/vm creation * fix revert snapshot format type and handle revert snapshot functionality for clvm * 1. Create clvmlockmanager and move common code \n 2. handle attaching volumes to stopped VMs \n 3. Handle lock transfer when VM is started on another host * add license * remove command/answer classes from sonar coverage check * add support for new gen clvm with template (qcow2) backing * Add support for clvm_ng - which allows qcow2 on block storage , linked clones, etc * fix test and use physical size + 50% of virtual size for backing file, while virtual size + pe for disk * migrate clvm volumes as full clone and allow migration from clvm to nfs * fix clvm_ng to nfs migration, and handle overhead calc * support live migration from clvm_ng to nfs and vice-versa * add support to migrate to and from clvm to nfs * fix creation of volume on destination host during migration to clvm/clvm-ng * support live vm migration between clvm -> clvm-ng (vice-versa), nfs -> clvm (vice-versa) and nfs->clvm-ng (vice-versa) * add unit tests for clvm/clvm_ng operations * Add support for incremental volume snapshots for clvm_ng * prevent snapshot backup for incremental clvm_ng snaps, fix build failure, add unit tests * fix lockhost on creation of volumes from snap and fix bitmap issue when migrating a vol with incremental snap * restrict pre and post migration commands to only kvm hosts where vm has CLVM/CLVM-NG volumes * evist lock tracking - use lvs command to get lock host than DB * add test for pre/post migration * Create a CLVM storage adaptor * update existing clvm get stats method * fix precommit check failure * Apply suggestions from code review Co-authored-by: Suresh Kumar Anaparti <sureshkumar.anaparti@gmail.com> * Apply suggestions from code review Co-authored-by: Suresh Kumar Anaparti <sureshkumar.anaparti@gmail.com> * improve lock host retrieval logic and quicker retrival using db host as first check point and then fanning out * add proper support for resizing of clvm_ng which calculated PE correctly for qcow2 metadata * fallback to full snapshots for clvm-ng - incremental not supported in 4.23 * expunge volume detail of lock host on vm expunge * if vmmigration with volume is done to the same clvm volume group, then dont do data transfer, just lock transfer and vm * add clvm pools with deterministic uuid , so as to prevent adding the same pool twic * added a small improvement to factor in a senario when lv is inactive on all hosts, could happen in storage outage issue * address comment - extract common code for endpoint identification if clvm pool type * Address comments - add early return guard to reduce indentation * minor improvement - when migrating vm with volumes, if there's a failures, change the clvm vols to exclusive on source from shared, and on success, change dest vol to exclusive only for cross-pool migration * cleanup unused code and tests for incremental snaps for clvmng and other cleanups * allow storage browser to list lv in clvm, fix clvm shrink, overprovisioning factor isnt used for clvm pools - so set it to 1 and prevented display of provisioning type for clvm * no need to have locktransfercommand to execute in sequence * increase lv cmd timeouts to consider cluster load --------- Co-authored-by: Pearl Dsilva <pearl1954@gmail.com> Co-authored-by: Suresh Kumar Anaparti <sureshkumar.anaparti@gmail.com> |
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