Per the commit message for commit dae55b6fef5, the requested patch is
also needed in Trusty and Xenial:
Fixes: 25f269f17316 ("[S390] qdio: EQBS retry after CCQ 96")
Cc: <sta...@vger.kernel.org> #v3.2+
** Changed in: linux (Ubuntu)
Assignee: Skipper Bug Screeners (skipper-screen-team) => Joseph Salisbury
(jsalisbury)
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Changed in: linux (Ubuntu)
Status: New => In Progress
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Bionic)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Changed in: linux (Ubuntu Bionic)
Importance: Undecided => High
** Changed in: linux (Ubuntu Bionic)
Status: New => In Progress
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Status: New => In Progress
** Changed in: linux (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Trusty)
Status: New => In Progress
** Changed in: linux (Ubuntu Trusty)
Importance: Undecided => High
** Changed in: linux (Ubuntu Trusty)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
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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
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/1781535/+subscriptions
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