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Gleb Chesnokov
e7ad7e093e
The scst_user specification copies ioctl structures and command payloads that predate several ABI extensions. Building a handler from those layouts can select the wrong union member, alignment or completion path. Commit3fc775c75a("EXTENDED COPY support") added remapping payloads. Commitdaee4dcb7e("WRITE SAME command improvements") added WRITE SAME descriptors. Commitd1bd22afd9("scst_user: avoid global locks") left the explicit unregister ioctl as an obsolete no-op. Use scst/include/scst_user.h and scst_user.c as the producer-side source of truth. Synchronize registration, command, reply and subcommand layouts, version checks, reserved fields and ioctl rules. Update the fileio_tgt, stpgd and event guides from current code. Make live-storage and event-consumption risks explicit.
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.
Instructions for building and installing SCST are available in the INSTALL.md file.
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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