Gleb Chesnokov
c88331828d
The QLogic EDIF teardown now uses timer_shutdown(). Use the native helper
on Linux 6.2+, stable 6.1.158+ and 5.15.200+, RHEL 8.9+/9.3+, and the
Ubuntu kernels that backported it. Keep this compatibility change separate
from the import of upstream 292a089d78d3.
Also account for the timer_delete_sync() backport in Ubuntu 5.15.0-93.
Its headers report Linux 5.15.136, below the upstream stable 5.15.154
boundary, so the existing fallback redeclares a native kernel function.
The earlier Ubuntu fix covered timer_delete() but omitted its sync peer.
Limit the ABI check to the generic/HWE numbering range; flavour ABIs use
independent sequences.
Ubuntu 5.4.0-206 reports Linux 5.4.286 and is already covered by the
existing 5.4.274 stable boundary for timer_delete_sync().
On kernels without shutdown support, retain the previous timer_delete()
behavior. This fallback does not prevent rearming; that guarantee requires
support in the kernel timer implementation. Callers on these kernels still
have to exclude concurrent rearming themselves.
Fixes: d21b6f1457 ("scst: Port to Linux kernel v6.15")
Overview
This is the source code repository of the SCST project. SCST is a collection of Linux kernel drivers that implement SCSI target functionality. The SCST project includes:
- The SCST core in the scst/ subdirectory.
- A tool for loading, saving and modifying the SCST configuration in directory scstadmin/.
- Several SCSI target drivers in the directories iscsi-scst/, qla2x00t-32gbit/, qla2x00t/, srpt/, scst_local/ and fcst/.
- User space programs in the usr/ subdirectory, e.g. fileio_tgt.
- Various documentation in the doc/ subdirectory.
Documentation
- Building and installing SCST.
- Build options: Clang, cross-compilation, and kernel module signing.
- Configuration and administration: targets, devices,
LUNs, and
/etc/scst.conf. - Core and device handlers: operating modes, module parameters, and sysfs configuration.
- Target drivers: iSCSI, iSER, QLogic Fibre Channel, SRP, FCoE, and local loopback.
- Performance tuning.
- Clustered persistent reservations: synchronization through DLM.
- T10 protection information: data integrity modes and configuration.
- Developer references: architecture and userspace handler interface (SGML sources), and sysfs interface rules.
- Contributing: code style, commit conventions, local checks, and guides to KUnit and component testing.
Current master packages
Prebuilt x86_64 packages from the latest successfully published master
build are available in the rolling
master-rpm prerelease.
These are development snapshots, not SCST releases.
The snapshot contains RPM bundles for selected Rocky Linux and Oracle Linux
UEK kernels. It also contains Ubuntu LTS bundles with scst-dkms, scstadmin
and iscsi-scst binary packages and their Debian source package files. Exact
distribution releases and RPM kernel versions are included in the asset names.
Every .tar.gz bundle has a matching .sha256 file. The complete snapshot is
replaced after each successful package workflow for the current master
commit.
QLogic target driver
Two QLogic target drivers are included in the SCST project.
The default driver is located in the qla2x00t-32gbit directory. It is the newer one.
May anyone wish to switch back to the older driver that only supported up to
16 Gb/s adapters, it is located in qla2x00t directory. To make use of the
older driver build scst with environment variable QLA_32GBIT=no set.
Vladislav Bolkhovitin vst@vlnb.net, http://scst.sourceforge.net
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