| 4d3b659f | 11-Nov-2024 |
John Baldwin <jhb@FreeBSD.org> |
nvmf: Track SQ flow control
This isn't really needed since the host driver never submits more
commands to a queue than it can hold, but I noticed that the
recently-added SQ head and tail sysctl node
nvmf: Track SQ flow control
This isn't really needed since the host driver never submits more
commands to a queue than it can hold, but I noticed that the
recently-added SQ head and tail sysctl nodes were not updating. This
fixes that and also uses these values to assert that there we never
submit a command while a queue pair is full.
Sponsored by: Chelsio Communications
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| ef052adf | 26-Sep-2024 |
John Baldwin <jhb@FreeBSD.org> |
nvmf: Narrow scope of sim lock in nvmf_sim_io
nvmf_submit_request() handles races with concurrent queue pair
destruction (or the queue pair being destroyed between
nvmf_allocate_request and nvmf_sub
nvmf: Narrow scope of sim lock in nvmf_sim_io
nvmf_submit_request() handles races with concurrent queue pair
destruction (or the queue pair being destroyed between
nvmf_allocate_request and nvmf_submit_request), so the lock is not
needed here. This avoids holding the lock across transport-specific
logic such as queueing mbufs for PDUs to a socket buffer, etc.
Holding the lock across nvmf_allocate_request() ensures that the queue
pair pointers in the softc are still valid as shutdown attempts will
block on the lock before destroying the queue pairs.
Sponsored by: Chelsio Communications
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| f46d4971 | 05-Jun-2024 |
John Baldwin <jhb@FreeBSD.org> |
nvmf: Handle shutdowns more gracefully
If an association is disconnected during a clean shutdown, abort all
pending and future I/O requests with an error to avoid hangs either due
to filesystem unmo
nvmf: Handle shutdowns more gracefully
If an association is disconnected during a clean shutdown, abort all
pending and future I/O requests with an error to avoid hangs either due
to filesystem unmounts or a stuck GEOM event.
If an association is connected during a clean shutdown, gracefully
disconnect from the remote controller and close the open queues.
Reviewed by: imp
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D45462
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| aacaeeee | 05-Jun-2024 |
John Baldwin <jhb@FreeBSD.org> |
nvmf: Permit failing I/O requests while disconnected
Add a kern.nvmf.fail_on_disconnection sysctl similar to the
kern.iscsi.fail_on_disconnection sysctl. This causes pending I/O
requests to fail wi
nvmf: Permit failing I/O requests while disconnected
Add a kern.nvmf.fail_on_disconnection sysctl similar to the
kern.iscsi.fail_on_disconnection sysctl. This causes pending I/O
requests to fail with an error if an association is disconnected
instead of requeueing to be retried once the association is
reconnected. As with iSCSI, the default is to queue and retry
operations.
Reviewed by: imp
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D45308
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| e140f85d | 05-Jun-2024 |
John Baldwin <jhb@FreeBSD.org> |
nvmf: Rescan namespaces after reconnecting
While a host was disconnected from a remote controller, namespaces
might have been added, removed, or altered properties. Rescan the
namespaces after reco
nvmf: Rescan namespaces after reconnecting
While a host was disconnected from a remote controller, namespaces
might have been added, removed, or altered properties. Rescan the
namespaces after reconnecting to detect any such changes.
Reviewed by: imp
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D45461
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