[ BUGFIX ] Fabrics connect timeouts #1711
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tiagolobocastro
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Allows passing this via env NVMF_FABRICS_CONNECT_TIMEOUT. Also defaults it to 1s for now, rather than 500ms. Signed-off-by: Tiago Castro <tiagolobocastro@gmail.com>
Otherwise a returned negative value translates into an unknown Errno. Signed-off-by: Tiago Castro <tiagolobocastro@gmail.com>
Initially this block_on was added because the remove callback was running in blocking fashion, but this has since changed and unplug is actually called from async context. As such, we don't need the block_on and simply call the async code directly. Also, simplify complete notification, as we can simply close the sender. Signed-off-by: Tiago Castro <tiagolobocastro@gmail.com>
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dsharma-dc
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Aug 9, 2024
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Do we know the reason why historically these paths were using blocking on futures to complete? |
dsavitskiy
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Split creating from starting the subsystem. This way we can start the subsystem in master reactor, and then move to the next spdk subsystem. Signed-off-by: Tiago Castro <tiagolobocastro@gmail.com>
the unplug code was originally not async, and suspect that's why block_on was used. The others I don't know, perhaps was just used as a "shotcut"... |
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Resolves #1710 |
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1711: [ BUGFIX ] Fabrics connect timeouts r=tiagolobocastro a=tiagolobocastro
Reactor block_on may prevent spdk thread messages from running and therefore this can lead to starvation of messages pulled from the thread ring, which are not polled during the block_on.
There are still a few uses remaining, most during init setup, so mostly harmless, though the Nexus Bdev destruction which runs on blocking code, does still contain a block_on.
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fix(nvmf/target): remove usage of block_on
Split creating from starting the subsystem.
This way we can start the subsystem in master reactor, and then move
to the next spdk subsystem.
Signed-off-by: Tiago Castro <tiagolobocastro@gmail.com>
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fix(nexus-child/unplug): remove usage of block_on
Initially this block_on was added because the remove callback was running in blocking
fashion, but this has since changed and unplug is actually called from async context.
As such, we don't need the block_on and simply call the async code directly.
Also, simplify complete notification, as we can simply close the sender.
Signed-off-by: Tiago Castro <tiagolobocastro@gmail.com>
---
fix(nvmx/qpair): return errno with absolute value
Otherwise a returned negative value translates into an unknown Errno.
Signed-off-by: Tiago Castro <tiagolobocastro@gmail.com>
---
feat: allow custom fabrics connect timeout
Allows passing this via env NVMF_FABRICS_CONNECT_TIMEOUT.
Also defaults it to 3s for now, rather than 500ms.
Signed-off-by: Tiago Castro <tiagolobocastro@gmail.com>
Co-authored-by: Tiago Castro <tiagolobocastro@gmail.com>
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oops typo |
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Canceled. |
Should this become an unsafe function? Signed-off-by: Tiago Castro <tiagolobocastro@gmail.com>
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Reactor block_on may prevent spdk thread messages from running and therefore this can lead to starvation of messages pulled from the thread ring, which are not polled during the block_on.
There are still a few uses remaining, most during init setup, so mostly harmless, though the Nexus Bdev destruction which runs on blocking code, does still contain a block_on.