The requested commit is in Bionic as of Ubuntu-4.15.0-23.25~80:
25dbc82 s390/qdio: don't retry EQBS after CCQ 96
The requested commit is in Xenial as of Ubuntu-4.4.0-128.154~221:
e26f413 s390/qdio: don't retry EQBS after CCQ 96
** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Fix Released
** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1781535
Title:
qdio: don't retry EQBS after CCQ 96
Status in Ubuntu on IBM z Systems:
Triaged
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Trusty:
In Progress
Status in linux source package in Xenial:
Fix Released
Status in linux source package in Bionic:
Fix Released
Bug description:
Description: qdio: don't retry EQBS after CCQ 96
Symptom: Queue stalls, over-/underreporting of buffer errors.
Problem: Immediate retry of EQBS after CCQ 96 means that we
potentially misreport the state of buffers inspected
during the first EQBS call.
Solution: On CCQ 96, first process the discovered state.
Afterwards, higher-level code will eventually trigger an
EQBS/inspection of the remaining buffers. Their state is
now processed independently from the state that was
discovered during the first EQBS.
Upstream-ID: dae55b6fef58530c13df074bcc182c096609339e
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