{"id":183469,"date":"2026-09-25T16:54:25","date_gmt":"2026-09-25T14:54:25","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/vypusk-samba-4-25-0"},"modified":"2026-09-25T16:54:29","modified_gmt":"2026-09-25T14:54:29","slug":"samba-4-25-0-release","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/samba-4-25-0-release","title":{"rendered":"Samba 4.25.0 Release","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>After 6 months of development, the release of Samba 4.25.0 has been announced, continuing the evolution of the Samba 4 branch with a complete implementation of a domain controller and Active Directory service compatible with the Windows Server implementation, capable of servicing all supported Microsoft versions of Windows clients, including Windows 11. Samba 4 is a multifunctional server product that also provides a file server implementation, printing service, and identity server (winbind). The project code is written in C and is distributed under the GPLv3 license.      <\/p>\n<p>Key changes in Samba 4.25:  <\/p>\n<ul>\n<li class=\"l\"> Experimental support for persistent file handles (SMB2_CAP_PERSISTENT_HANDLES) has been added to the SMB3 protocol implementation, allowing clients to continue working with opened files after a network connection drop, a restart <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/en\/server\/dts-los-angeles\/\"   title=\"server\" data-wpil-keyword-link=\"linked\">server<\/a> or a failover to a backup server. Persistent handles eliminate the need to reopen files after a server failure, which is especially relevant for hosting file <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/en\/server\/dts-newyork\/\"   title=\"server\" data-wpil-keyword-link=\"linked\">server<\/a> Samba virtual machines and clustered databases.\n<p>To operate, exclusive access to the SMB storage must be provided, and the settings 'kernel oplocks', 'kernel share modes', and 'posix locking' must be disabled, which violates compatibility with POSIX and NFS, significantly reducing performance due to the synchronous writing of metadata to disk with each operation. Two fault tolerance modes are offered: full_outage (default) \u2014 a local backup of the state is created, allowing handles to be preserved even after a complete cluster failure, but increasing the load; partial_outage \u2014 faster operation without backup, but handles are lost if all cluster nodes fail simultaneously.      <\/p>\n<li class=\"l\"> The VFS module vfs_aio_ratelimit has been added, allowing a request intensity limit (rate limit) to be set, applicable to the entire cluster context, not just tied to individual nodes. To coordinate the global application of limits, a background process ratelimitd must be running on each node, aggregating the activity of all smbd processes on the node and relaying information to other cluster nodes. Enabling vfs_aio_ratelimit is done during the build stage by specifying the option '--with-ratelimitd'.\n<li class=\"l\"> The VFS module vfs_ceph_rgw for Ceph RGW (Object Gateway) has been added, allowing data to be exported from Ceph Object Gateway as SMB storage with a hierarchical view of stored objects in the form of regular files and directories, with access segregation at the POSIX uid\/gid level.\n<li class=\"l\"> Cluster functional levels resembling levels <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/en\/domain\/\"   title=\"domain\" data-wpil-keyword-link=\"linked\">domain<\/a> and forests in Active Directory, allowing for rolling upgrades of nodes in the cluster. Database formats and internal messaging formats that affect node interactions are only changed after an explicit upgrade for the entire cluster, ensuring compatibility of nodes with different Samba versions during the upgrade. Management is carried out through the commands 'net clusterlevel features|show|showall|upgrade'.\n<li class=\"l\"> For encryption in domains, the aes128-cts-hmac-sha1-96 and aes256-cts-hmac-sha1-96 algorithms are used by default for domains with a functional level of 2008 and above. This change blocks the manifestation of the CVE-2026-20833 vulnerability caused by the use of insecure encryption methods in Windows Kerberos.\n<li class=\"l\"> In CTDB, files with locks, PID, and sockets have been moved to subdirectories ctdb\/. The initialization script ctdb.init has been moved to ctdb\/doc\/examples. Support for monitoring hosts, such as DNS servers, has been added. The function detect_init_style() and the variable CTDB_INIT_STYLE have been deprecated (it is recommended to use CTDB_PLATFORM_STYLE instead).    <\/ul>\n<p>Source: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=66341\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 6 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 Samba 4.25.0, \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0432\u0448\u0438\u0439 \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u0432\u0435\u0442\u043a\u0438 Samba 4 \u0441 \u043f\u043e\u043b\u043d\u043e\u0446\u0435\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u0430 \u0434\u043e\u043c\u0435\u043d\u0430 \u0438 \u0441\u0435\u0440\u0432\u0438\u0441\u0430 Active Directory, \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0433\u043e \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 Windows Server \u0438 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0433\u043e \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u0442\u044c \u0432\u0441\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0435 Microsoft \u0432\u0435\u0440\u0441\u0438\u0438 Windows-\u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 Windows 11. Samba 4 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043c\u043d\u043e\u0433\u043e\u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u043c \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u044b\u043c \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u043c, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u043c \u0442\u0430\u043a\u0436\u0435 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u0441\u0435\u0440\u0432\u0438\u0441\u0430 \u043f\u0435\u0447\u0430\u0442\u0438 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-183469","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 6 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 Samba 4.25.0, \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0432\u0448\u0438\u0439 \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u0432\u0435\u0442\u043a\u0438 Samba 4 \u0441 \u043f\u043e\u043b\u043d\u043e\u0446\u0435\u043d\u043d\u043e\u0439 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