multipath-tools lacks the default settings for IBM 2810XIV storage system

@taco-screen-team

This one probably should be assigned to mathieu-tl, who's been working on multipath-related bugs.

Thanks

@mathieu-tl

Hi Mathieu, can you add this one to your list, please? Thanks!

------- Comment From <email address hidden> 2015-10-07 11:30 EDT-------
Lowering priority.
We're already customizing multipath.conf anyway, and this shouldn't get in the way of other, more serious ship bugs for Canonical.

This is a trivial change which is a prime target for a SRU, or if there's another upload of multipath-tools prior to release.

Is this change really needed on 15.10? It seems to me like we're already carrying the proper options for 2810XIV given that the only elements missing from the hw table are setting configuration options to their default values anyway?

@mathieu-tl

I think so; afaik queue_if_no_path is not enabled by default.

This is already in 0.5.0; closing as Fix Released for Wily and Xenial.

Hello bugproxy, or anyone else affected,

Accepted multipath-tools into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/multipath-tools/0.4.9-3ubuntu7.8 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

The snippets for IBM XIV are present in the source.

# head -n1 debian/changelog
multipath-tools (0.4.9-3ubuntu7.8) trusty; urgency=medium

# sed -n '/IBM XIV/,/}/ p' libmultipath/hwtable.c
                /* IBM XIV Storage System */
                .vendor = "IBM",
                .product = "2810XIV",
                .getuid = DEFAULT_GETUID,
                .features = "1 queue_if_no_path",
                .hwhandler = DEFAULT_HWHANDLER,
                .selector = DEFAULT_SELECTOR,
                .pgpolicy = MULTIBUS,
                .pgfailback = 15,
                .rr_weight = RR_WEIGHT_NONE,
                .no_path_retry = NO_PATH_RETRY_UNDEF,
                .minio = 15,
                .checker_name = TUR,
                .prio_name = DEFAULT_PRIO,
                .prio_args = NULL,
        },

Still, it would be important to confirm that they are correctly applied when one such device is attached; for instance, that the right minio values, pgpolicy, etc. are set.

Hello bugproxy, or anyone else affected,

Accepted multipath-tools into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/multipath-tools/0.4.9-3ubuntu7.9 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

This was already verified successfully before; the additional update does not need reverification, only checking the regression in bug 1543430.

This bug was fixed in the package multipath-tools - 0.4.9-3ubuntu7.9

---------------
multipath-tools (0.4.9-3ubuntu7.9) trusty; urgency=medium

  * debian/patches/kpartx-support-device-names-with-spaces.patch: fix loopback
    files unmapping. (LP: #1543430)

multipath-tools (0.4.9-3ubuntu7.8) trusty; urgency=medium

  * debian/patches/kpartx-support-device-names-with-spaces.patch: deal with
    spaces in device names in kpartx too (LP: #1432062)
  * debian/initramfs/local-premount: wait for udev to settle before mounting
    so the by-uuid/ symlinks have a chance to be updated by udev rules.
    (LP: #1503286)
  * Allow device detection all through the initramfs: run multipathd instead
    of only scanning once for devices, so those that come up slower can still
    be used as a root device (LP: #1526984):
    - debian/patches/0050-readonly-bindings_prefix.patch,
      debian/patches/0051-readonly-bindings_multipath.patch,
      debian/patches/0052-readonly-bindings_multipathd.patch,
      debian/patches/0053-readonly-bindings_multipathd_prod.patch: support -B
      to allow multipathd to handle cases where the bindings file is read-only.
    - debian/initramfs/hooks: install multipathd and required directories.
    - debian/initramfs/local-premount: also reload all maps to make sure
      they're ready before we mount.
    - debian/initramfs/local-top: run multipathd rather than a one-off call to
      multipath so that new paths can be correctly added as detected while
      we're still in the initramfs.
    - debian/initramfs/local-bottom: remember to stop multipathd.
    - debian/initramfs/local-bottom, debian/rules: install local-bottom for
      initramfs.
  * debian/patches/lp1496210_add_IBM_XIV_defaults.patch: add support (default
    config values) for the IBM 2810XIV storage system. (LP: #1496210)
  * debian/patches/0054-kpartx-update-option.patch: run kpartx -u rather than
    kpartx -a, so as to remove old partition entries if the partition table
    has changed. (LP: #1473903)
  * debian/patches/multipath_enable_sync_support_1b8082c8.patch,
    debian/patches/kpartx_rely_on_udev_dev_creation_9a632fff.patch: synchronize
    udev, device-mapper and multipath, and let udev deal with creating device
    nodes and symlinks. (LP: #1486370)
  * debian/initramfs/local-top: drop scsi_wait_scan stanza, that module is no
    longer available. (LP: #1538775)

 -- Mathieu Trudel-Lapierre <email address hidden> Tue, 09 Feb 2016 16:03:10 -0500

The verification of the Stable Release Update for multipath-tools has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.