A single new feature: the new log-structured metadata store implementation, described
in the presentation from Moscow Highload'2025 (check it out [here](https://vitastor.io/en/docs/#talks-and-presentations)).
It's now the default store for new OSDs. The support for the old store is also left in place,
you can still choose it for new OSDs with `vitastor-disk prepare --meta_format 2`.
OSDs from previous versions with the old store format will also continue to operate just like before.
- Implement `vitastor-kv rescue` command which dumps all readable blocks from the
database regardless of the tree structure and allows to recover a corrupted database.
- Simplify primary OSD selection - use just PG number instead of the hash. This allows
to distribute primary OSDs more evenly and reach better read speeds.
- Fix vitastor-kv-stress hang on parallel list & reopen.
- Fix CAS writes without immediate_commit. Fix is sufficient for vitastor-kv to
operate correctly in non-immediate_commit pools.
- Fix NFS ACCESS calls for broken inodes (allow root access to them).
- Fix broken vitastor-kv-stress --runtime parameter.
- Fix bad vitastor-kv dump output buffering leading to incorrect JSON in dumps.
- Fix writing garbage from uninitialized memory to the empty space in VitastorKV DB.
- Refactor some code in preparation to the release of the new log-structured metadata store.
- Replace assert(done != expected) error message, probably caused by kernel issues with
zero-copy TCP send, with a more concise error description.
- Daemonize before forking in NFS proxy to fix OSD RDMA support (#107)
- Fix possible PG_INCOMPLETE on node outage when allow_net_split is false
- Fix build under Ubuntu 25.10
- Fix journal_no_same_sector_overwrites mode after optimizing WA (#109)
- Optimize WA - reduce it from 4-5 to 3.x by batching journal writes
- Fix ls-pool showing wrong used % when osds are reweighted (#105)
- Fix vitastor-cli rm sometimes hanging when PGs are down (#99)
- Fix vitastor-cli ls displaying raw used space for all inodes when -p is specified (#101)
- Fix "Cannot set property of undefined" in monitor when deleting pool with live inode op stats (#103)
- Revert vitastor-kv change from 2.2.0 leading to crashes in vitastor-kv-stress (#100)
- Add pg_size change check for XOR pools
- Fix root access to VitastorFS files
- Add IPv6 support to make-etcd
- Fix IPv6 etcd address support in OSD & client library
New features:
- Support UBLK in CSI and make it the default
- Add image tree output: `vitastor-cli ls --tree`
Bug fixes:
- Fix OSDs crashing on localized reads from snapshotted images
- Several NFS fixes from github PR #95
- Fix snapshotted bitmap reads not working in EC pools (fix#92)
- Fix UBLK reporting incorrect device size (1/8 of actual size), report logical_block_size=4096
- Do not repeer when stopping PEER_CONNECTING osd_clients (increase PG peering stability on failover)
- Fix marking PGs as incomplete when peers are unavailable
- Fix FS formatter (mkfs and fsck) error handling in CSI (it didn't report mounting errors)
- Fix removal of block PVC devices not working in CSI
- Do not attempt to free outbound ops in clear_immediate_ops (fix#88)
- Add vitastor-disk prepare --dry-run option
- Add librdmacm-dev to build-deps
- Log has_invalid objects
- Do not warn on incomplete+has_invalid PG states as unexpected
- Fix OSD reweight values between 0 and 1 not working in monitor
- Fix OSD assertion failed: n_subops != sent when all object copies are corrupted
- Install ibverbs-providers in vitastor Docker builds
- Fix#86 - base64_decode on arm64 O_o
- Fix Proxmox 9.0 support (remove some kind of a whitelist added in upstream)
New features:
- Add a new kernel device mounting method: [ublk](https://vitastor.io/docs/usage/ublk.html).
It's the fastest method for random IOPS, and it's on par with VDUSE for linear MB/s.
- Disable io_uring waits being reported as iowait on kernels which support it (6.15+)
- Allow to enforce permissions at the VitastorFS NFS server side
- Add qemu_file_mirror_path option to the config to allow to trick Veeam and make it work
- Speed up CRC32C calculation in OSD by fixing a bug and enabling AVX512 version
- Support QEMU 10
- Support Debian 13 Trixie and Proxmox 9.0
- Remove the dependency on system liburing in package builds (build it statically)
Bug fixes:
- Fix checksums NEVER BEING ENABLED in vitastor-disk prepare, even when explicitly requested :-D
- Use default uid and gid from NFS AUTH_SYS when creating files
- Fix object bitmaps supposedly & possibly being corrupted in some rare cases with EC N+2+
- Avoid multiple inflight overwrites to meta blocks - fixes possible data corruption with
one specific SSD model: Memblaze PBlaze5 910 (github #79)
- Fix a bug in antietcd which was leading to leases sometimes not expiring correctly
- Fix a bug in NFS where ".." entry had its `cookie` equal to 0 instead of 1 (github #78)
- Fix snapshots not being deleted during VM deletion in Proxmox plugin (github #85)
- Fix monitor not filtering OSDs by block size correctly
- Support Ubuntu 24.04 Noble
- Fix clients hanging on online PG count change with in-flight operations
- Fix volume_size_info in PVE VitastorPlugin
- Implement bdrv_refresh_filename for the QEMU driver
- Fix RDMA-CM broken in 2.2.0
- Fix possible "invalid %N$ use detected" OSD crashes
- Fix vitastor-nfs build without RDMA
- Fix docker build by adding the forgotten apt/preferences
- Fix libfio_blockstore.so
- Fix "trigger event loop automatically" API version check in the QEMU driver
- Add Content-Type header for prometheus metrics
- Add a patch for libvirt 11.5
- Fix a bug introduced in 2.2.0 - pg_locks weren't disabled for pools without local_reads
correctly which could lead to inactive pools during various operations
- Fix an old bug where OSDs could send sub-operations to incorrect peer OSDs when their
connections were stopped and reestablished quickly, in 2.2.0 it was usually leading
to "sequencing broken" messages in OSD logs
- Fix debug use_sync_send_recv mode
- Fix vitastor-disk purge broken after adding the "OSD is still running" check
- Fix iothreads hanging after adding zero-copy send support
- Fix enabling localized reads online (without restarting OSDs) in the default PG lock mode
New features:
- [Localized read support](https://vitastor.io/docs/config/pool.html#local_reads) for multi-datacenter setups.
- io_uring-based [zero-copy send support](https://vitastor.io/docs/config/network.html#min_zerocopy_send_size) -
read the instruction carefully for optimal performance!
- Improve and speedup data distribution, especially in cases of very large hosts (100 OSD+).
Previously, PG optimization speed depended on the number of OSDs, now it only depends on
the number of failure domains. Distribution over specific OSDs is now also more even and
becomes strictly more even when you increase the number of PGs.
- Add a [very interesting instruction](https://vitastor.io/en/docs/usage/nfs.html#linux-nfs-write-size) to change NFS_MAX_FILE_IO_SIZE
- Check operation sequencing and stop connections when it breaks - should help catch some
very rare RDMA packet loss problems.
- `vitastor-cli rm-osd` now refuses to remove OSDs which are still up and suggests to use `vitastor-disk purge`.
- Allow removal of direntries referring non-existent in VitastorFS.
- Change default vitastor-etcd data dir to /var/lib/etcd/vitastor.
Bug fixes:
- Fix compatibility with ISA-L 2.31+. ⚠️Very important: please upgrade Vitastor before upgrading ISA-L to 2.31+.
- Fix in-memory state cleanup for incomplete PGs.
- Fix monitor crash with non-existent node_placement nodes.
- Slightly speedup `vitastor-kv dump` command by adding output buffering.
- Fix theoretically possible slowdowns in OSD sub-operation failure handling code.
- Fix very rare stack overflows in vitastor-kv.
- Fix a possible crash in VitastorFS during handling of file creation race condition.
- Fix modify-pool -s PG_SIZE which didn't work without --pg_minsize.
- Fix marking peer OSDs as alive on receiving data from them via RDMA - in theory,
the bug could result in instability with RDMA under high load with slow disks.
- Fix a rare OSD crash due to double handle_primary_subop() call.
- Fix latency aggregation in global stats (/vitastor/stats in etcd) - do not sum it.
- Hide "Ran out of journal space" log messages by default.
- Wait for RDMA-CM EVENT_ESTABLISHED after rdma_accept(), handle rdma_accept() before acking the event.
- Fix VitastorFS total & free numbers multiplied by extra 2.
- Fix systemd unit name in make-etcd.
- Do not allow reweight > 1 in vitastor-cli modify-osd.
- Fix docker build.
This greatly speeds up PG placement and makes it more uniform both because the LP task
becomes simpler and because the distribution of individual OSDs is optimised manually
New features:
- Support separate OSD cluster network - [osd_cluster_network](https://vitastor.io/docs/config/network.html#osd_cluster_network)
and, in general, multiple OSD networks, including RDMA
- Add an alternative RDMA implementation via RDMA-CM - [use_rdmacm](https://vitastor.io/docs/config/network.html#use_rdmacm),
required for iWARP and, maybe, for some IB setups (but not for RoCE)
- Change default PG behaviour to wait for all "up" OSDs to be connected before starting it.
The old behaviour may be returned by enabling a new [allow_net_split](https://vitastor.io/docs/config/osd.html#allow_net_split)
option.
- Add a patch for QEMU 9.2
Bug fixes:
- Fix incorrect "has_xxx" PG state names in ls-pgs
- Fix possible QEMU crashes after detaching of Vitastor disks (and update all QEMU builds in Vitastor repos)
- Fix clients sometimes spamming OSDs with infinite reconnections when some PGs are offline
- Fall back to TCP on RDMA connection failures
- Add missing logging of RDMA ibv_modify_qp() errors
- Add a minimum interval for etcd_state_client to reload state
No breaking features, it's 2.0.0 just because it includes S3 and because
there are already too many 1.x releases :).
New features:
- S3 is finally available: https://vitastor.io/docs/installation/s3.html
- node.js addon is now packaged as a Debian package
- Support listing PGs by OSDs in `vitastor-cli ls-pgs`
- Implement offline TRIM support: [vitastor-disk trim](https://vitastor.io/docs/usage/disk.html#trim),
[discard_on_start](https://vitastor.io/docs/config/osd.html#discard_on_start)
- Change used_for_fs pool option to used_for_app
Bug fixes:
- Fix several bugs in the node.js addon (a memory leak, an incorrectly triggered event loop)
- Fix a client crash (vitastor-cli rm) during deletion when writeback is enabled
- Fix PG object count statistics on deletion of non-existing objects
- Fix vitastor-nbd crash when mapping by ID instead of inode name
- Fix a client memory leak with enabled immediate_commit and write-back cache
- Add seccomp=unconfined for vitastor docker OSDs to not break io_uring
- Add udev and systemd to vitastor docker image
- Fix upgrading from pre-0.7.1 (very old) systemd units O_o
- Fix total object count calculation in rm_data
New features:
- Support containerized Vitastor installations: http://vitastor.io/docs/installation/docker.html
- Add new functions to the node.js binding: delete(), get_immediate_commit(), on_ready(),
get_min_io_size(), get_max_atomic_write_size()
- S3 (Zenko Cloudserver with Vitastor support) is coming shortly and will be released separately
Bug fixes:
- Use IP-derived etcd node names in make-etcd
- Set short name of the OSD process to display in `top`
- Fix snap-create without pool_id failing when there are multiple pools
- Several bugs are fixed in the write-back cache, it should now be stable:
- Fix incorrect snapshot reads from dirty write-back cache
- Do not try to repeat pending writebacks on OSD reconnections
- Fix client hangs with multiple SYNCs in the writeback queue
- Fix client hangs do to incorrect calculation of the writeback queue size
- Several improvements for NBD mapping/unmapping:
- Add a workaround for race condition in the Linux kernel NBD driver leading
to vitastor-nbd sometimes breaking a previously mapped device instead of
setting up a new one
- Check if the device is actually mapped in vitastor-nbd unmap
- Fix device name/number validation in vitastor-nbd
- Fix OSD crashes after starting with corrupted metadata - from now it will skip
corrupted metadata entries and heal itself
- Fix scrubbing of misplaced objects and object state recalculation after
vitastor-cli fix - previously, an OSD restart could be required to fix object states
- Make primary OSD distribution more stable by using murmur3 hash instead of the old pseudo-rng
- Fix monitor sometimes racing with itself - do not touch /pool/stats from stats
aggregation if PG recheck is active
- Sort vitastor-cli ls output by name by default
- Update antietcd to 1.1.2
New features:
- Add "deleted" image flag which is set when vitastor-cli rm starts to delete an image,
but can't delete it fully due to inactive PGs or stopped OSDs
- Support JSON output in vitastor-disk prepare and purge
- Show backfillfull pools in vitastor-cli status
- Make object listings consistent (used in vitastor-cli rm/rm-data/merge/etc).
This means that there is now a guarantee that if a data block is present when you invoke rm,
rm will attempt to delete it, even if rm is invoked when the PG switches state. Previously in
such cases rm could skip and leave some objects behind as garbage, and merge probably could
incorrectly move data between snapshots.
- Make deletions (rm/rm-data) consistent. This means that rm/rm-data will either complete
successfully and delete all requested image data or complete with an error if some objects
could not be deleted or if there is a possibility that some data is left on stopped OSDs.
Previously, when some PGs or OSDs were inactive at the moment of deletion, rm-data was
behaving incorrectly: it wasn't retrying deletions failed due to dropped OSD connections,
it could hang waiting for PGs to activate, and it could return with a successful error
code while some garbage was still possibly left on some OSDs. Deletions are not fully atomic
cluster-wide yet, which means that you still have to repeat the deletion request after you
return stopped OSDs back, but now you always know for sure if you have to repeat it.
Bug fixes:
- Fix vitastor-cli rm --exact / --matching command not working
- Finally fix "Unexpected status" in the Proxmox plugin
- Fix vitastor-cli create-snap incorrectly linking multiple snapshots in a different pool
- Fix incomplete image parent_id loop check in OSD
- Fix reads from snapshots in a different pool not working if there are more than 2 snapshots
- Fix append of VITASTOR_CONF to cmdline in the opennebula prebackup script
- Fix OSDs crashing again when the cluster is full with EC (was meant to work since 1.6.0 but didn't)
- Improve logging of subop failures
New features:
- Implement basic VitastorFS support in [CSI](https://vitastor.io/docs/installation/kubernetes.html)
- Implement [NFS RDMA](https://vitastor.io/docs/usage/nfs.html#rdma) support
- Pause pool rebalance when monitor detects that it can lead to any OSD becoming full ([osd_backfillfull_ratio](https://vitastor.io/docs/config/monitor.html#osd_backfillfull_ratio))
- Auto-select correct [RDMA device and GID](https://vitastor.io/docs/config/network.html#rdma_device) based on osd_network and RoCEv2 priority
- Report slow ops in OSD stats in etcd and show them in vitastor-cli status
Bug fixes:
- Fix possibly incorrect linked list deserialization in NFS
- Fix possible crash in vitastor-nfs --block READDIR operation
- Map netlink after forking to show correct PID in vitastor-nbd ls
- Simplify and fix create-pool OSD count checks for the case of hosts split into sub-nodes
- Make monitor print "Waiting to become master" just once, not every 5s
- Take out_size from oimg if not specified in vitastor-cli dd
- Do not report OSDs with empty statistics as "full" in status
- Trigger double autosync when switching PG state to prevent leaving garbage in non-immediate_commit clusters
- Fix a lack of connection timeout for etcd websockets in OSD leading to slower etcd failover (~70s instead of ~10s)
- Fix a rare OSD crash during client disconnect
- Fix PGs sometimes sticking until OSD restart in the "has_unclean" state with EC pools
- Fix metadata partition zeroing in vitastor-disk prepare
- Add patches for qemu 9.1 and pve-qemu 9.0 and 9.1
- Fix libvirt 8 patch
- Support custom hybrid OSD creation (`vitastor-disk prepare --hybrid --fast-devices /dev/xxx,/dev/yyy`)
- Auto-change partition paths to /dev/disk/by-partuuid/ in `vitastor-disk prepare`
- Allow to select cached I/O in vitastor-disk commands
- Fix multiple bugs in vitastor-disk resize & add tests for them
- Fix vitastor-disk write-meta/write-journal in superblock-based mode writing it to an incorrect device
- Fix vitastor-disk prepare sometimes again not seeing new partitions
- Cleanup PG history and stats of deleted pools
- Fix "is already mounted" checks in CSI
New features:
- Support resizing normal vitastor-disk partitions and moving journal/metadata: [vitastor-disk resize](https://vitastor.io/docs/usage/disk.html#resize)
- Support simple forms of vitastor-disk {dump,write}-{meta,journal} for OSD partitions
Bug fixes:
- Fix block RWX volumes broken after introducing stage/unstage support
- Do not allow to create non-block RWX volumes in CSI
- Fix vitastor-disk prepare not seeing the newly created partition in rare cases
- Fix non-array tags not showing up in ls-osd/osd-tree
- Make OpenNebula oned.conf patching during installation smarter
- Fix iseek option in vitastor-cli dd not working
- Validate conv=, iflag=, oflag= options in vitastor-cli dd
- Fix vitastor-disk write-meta not writing header checksum to the disk
- Fix JSON format in vitastor-disk dump-meta
- Fix read_chain_bitmap not working for snapshot in another pool
- Fix a possible OSD crash during parallel read & write to an image with snapshots
- Several followups to the READ_CHAIN_BITMAP fix: avoid data reads, fix possible overflow in is_zero(), fix bitmap size
Hotfixes for OpenNebula and upgrade hotfix for 1.7
- Fix deploy.vitastor, save.vitastor, restore.vitastor scripts not working for nodes other than master oned
- Fix deploy.vitastor not working for VMs without Vitastor disks
- Disable clearing old PG configuration when upgrading from 1.7 or older versions (it was breaking old clients)
Vitaliy Filippov