Under certain conditions in the client, the fifo for a container may not
be created. A timeout has been added to this operation to ensure the
shim can recover when the client fails to open the fifos.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
This changes the copyIO in the shim to support logging to files from
client requests in addition to fifos.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
To avoid buffer bloat in long running processes, we try to use buffer
pools where possible. This is meant to address shim memory usage issues,
but may not be the root cause.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
Could issues where when exec processes fail the wait block is not
released.
Second, you could not dump stacks if the reaper loop locks up.
Third, the publisher was not waiting on the correct pid.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Stephen J Day