[Bug 1747388] Re: patch for multipath disks

[James Page]

** Package changed: udev (Ubuntu) => lvm2 (Ubuntu)

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https://bugs.launchpad.net/bugs/1747388

Title:
  patch for multipath disks

Status in OpenStack ceph-osd charm:
  Invalid
Status in lvm2 package in Ubuntu:
  New

Bug description:
  According to this page:

          https://patchwork.kernel.org/patch/9826353/

  there is a bug in ceph that affects the use of FibreChannel disks.

  The following patch to file hooks/ceph_hooks.py, fixes it:

  *** hooks/ceph_hooks.py	2018-02-02 16:15:40.304388602 +0100
  --- hooks/ceph_hooks.py~	2018-02-02 16:18:47.304401004 +0100
  ***************
  *** 369,378 ****

   @hooks.hook('storage.real')
   def prepare_disks_and_activate():
  -     # patch for missing dm devices
  -     # see: https://patchwork.kernel.org/patch/9826353/
  -     patch_persistent_storage_rules()
  - 
       osd_journal = get_journal_devices()
       check_overlap(osd_journal, set(get_devices()))
       log("got journal devs: {}".format(osd_journal), level=DEBUG)
  --- 369,374 ----
  ***************
  *** 558,579 ****
       log('Updating status.')

  
  - # patch for missing dm devices
  - from subprocess import check_call
  - 
  - 
  - CEPH_PERSITENT_STORTAGE_RULES = '/lib/udev/rules.d/60-persistent-storage.rules'
  - 
  - 
  - def patch_persistent_storage_rules():
  -     if os.path.isfile(CEPH_PERSITENT_STORTAGE_RULES):
  -         check_call(['sed', '-i', 's/KERNEL!="loop/KERNEL!="dm*|loop/',
  -                     CEPH_PERSITENT_STORTAGE_RULES])
  -         log('Patched %s' % CEPH_PERSITENT_STORTAGE_RULES)
  -     else:
  -         log('Missing %s' % CEPH_PERSITENT_STORTAGE_RULES)
  - 
  - 
   if __name__ == '__main__':
       try:
           hooks.execute(sys.argv)
  --- 554,559 ——

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