[Bug 1520192] [NEW] multipath-tools from Precise should have been fixed together with Trusty fixes

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Rafael David Tinoco (inaddy):

[Impact]

 * Multipath from precise proves to have problems with failover
 * This can lead to bad I/O if openstack relies on VNX, for example
 * "failed/online" path status is NEVER good and I/O corruption can happen
 * Minimum can happen is a GUEST freeze if relying on path in question
 * Other applications might suffer the same

[Test Case]

 * Described fully in comment #3 (comments #1 and #2 are related)

[Regression Potential]

 * This patches are the exact change that happen in Precise -> Trusty
   development. No major changes or versions were made. 
 * A PPA with a hotfix was created in order to test those changes and
   proved to fix the initial problem.

[Other Info]

Original BUG Description:

Precise multipath-tools MIGHT need fixes from trusty. This has already
been proved in one iSCSI multipath installation where precise multipath,
intermittently, connected to VNX storages show paths as: active/failed
when it should show - even after the path check timeout - faulty/failed.

* Improve description showing output *

Using trusty multipath in Precise, the same environment does NOT suffer
from this issue.

Differences between both versions:

#### LP: #1468897 - https://bugs.launchpad.net/bugs/1468897
#### LP: #1386637 - https://bugs.launchpad.net/bugs/1386637

- 0001-multipath-add-checker_timeout-default-config-option.patch
- 0002-Make-params-variable-local.patch
- 0003-libmultipath-Fix-possible-string-overflow.patch
- 0004-Update-hwtable-factorization.patch
- 0005-Fixup-strip-trailing-whitespaces-for-getuid-return-v.patch
- 0006-Remove-sysfs_attr-cache.patch
- 0007-Move-setup_thread_attr-to-uevent.c.patch
- 0008-Use-lists-for-uevent-processing.patch
- 0009-Start-uevent-service-handler-from-main-thread.patch
- 0010-libmultipath-rework-sysfs-handling.patch
- 0011-Rework-sysfs-device-handling-in-multipathd.patch
- 0012-Only-check-offline-status-for-SCSI-devices.patch
- 0013-Check-for-offline-path-in-get_prio.patch
- 0014-libmultipath-Remove-duplicate-calls-to-path_offline.patch
- 0015-Update-dev_loss_tmo-for-no_path_retry.patch
- 0016-Reload-map-for-device-read-only-setting-changes.patch
- 0017-multipath-get-right-sysfs-value-for-checker_timeout.patch
- 0018-multipath-handle-offlined-paths.patch
- 0019-multipath-fix-scsi-timeout-code.patch
- 0020-multipath-make-tgt_node_name-work-for-iscsi-devices.patch
- 0021-multipath-cleanup-dev_loss_tmo-issues.patch
- 0022-Fix-for-setting-0-to-fast_io_fail.patch
- 0023-Fix-fast_io_fail-capping.patch
- 0024-multipath-enable-getting-uevents-through-libudev.patch
- 0025-Use-devpath-as-argument-for-sysfs-functions.patch
- 0026-multipathd-remove-references-to-sysfs_device.patch
- 0027-multipathd-use-struct-path-as-argument-for-event-pro.patch
- 0028-Add-global-udev-reference-pointer-to-config.patch
- 0029-Use-udev-enumeration-during-discovery.patch
- 0030-use-struct-udev_device-during-discovery.patch
- 0031-More-debugging-output-when-synchronizing-path-states.patch
- 0032-Use-struct-udev_device-instead-of-sysdev.patch
- 0033-discovery-Fixup-cciss-discovery.patch
- 0035-Use-udev-devices-during-discovery.patch
- 0036-Remove-all-references-to-hand-craftes-sysfs-code.patch
- 0037-multipath-libudev-cleanup-and-bugfixes.patch
- 0038-multipath-check-if-a-device-belongs-to-multipath.patch
- 0039-multipath-and-wwids_file-multipath.conf-option.patch
- 0040-multipath-Check-blacklists-as-soon-as-possible.patch
- 0041-add-wwids-file-cleanup-options.patch
- 0042-add-find_multipaths-option.patch

#### LP: #1431650 - https://bugs.launchpad.net/bugs/1431650

- Added debian/patches/0015-shared-lock-for-udev.patch

#### LP: #1441930 - https://bugs.launchpad.net/bugs/1441930

- Support disks with non 512-byte sectors

#### LP: #1435706 - https://bugs.launchpad.net/bugs/1435706 ( GOOD
CANDIDATE )

- Correctly write FC timeout attributes to sysfs.

** Affects: multipath-tools (Ubuntu)
     Importance: High
     Assignee: Rafael David Tinoco (inaddy)
         Status: In Progress

-- 
multipath-tools from Precise should have been fixed together with Trusty fixes
https://bugs.launchpad.net/bugs/1520192
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