[Bug 987394] Re: udev starts too many vgchange -a y and then complains/fails on execution time.

[Bakhmatovich Vadim]

Looks like Bug #1124046

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Title:
  udev starts too many vgchange -a y and then complains/fails on
  execution time.

Status in “udev” package in Ubuntu:
  Confirmed

Bug description:
  I have a little more then 112 partitions as part of an Logical Volume
  and every boot I get a tone of "vgchange -a y" timed out/killing
  messages.

  I don't know how much more I can say, it's a 3T driver with 25GB
  partitions.  The idea is that 25GB will just fit onto a blu-ray
  disk/layer for backups, combined with dm_snaps.

  Hitting this disk with a bunch of vgchange commands is bound to take a
  vary long time.  As a point of note altering the LVM usually takes
  about 15 to 30 seconds, while each PV is updated.

  This should also be sub-optimal on a box with 2 or more PVs.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: udev 175-0ubuntu9
  ProcVersionSignature: Ubuntu 3.2.0-17.26-generic-pae 3.2.6
  Uname: Linux 3.2.0-17-generic-pae i686
  ApportVersion: 2.0.1-0ubuntu5
  Architecture: i386
  CustomUdevRuleFiles: 91-permissions.rules 95-late.rules 60-persistent-v4l.rules 50-udev.rules
  Date: Mon Apr 23 11:27:59 2012
  MachineType: System manufacturer System Product Name
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-17-generic-pae root=/dev/mapper/fsRoot ro recovery nomodeset rootfstype=ext4
  SourcePackage: udev
  UdevDb: Error: [Errno 2] No such file or directory
  UpgradeStatus: Upgraded to precise on 2012-01-03 (111 days ago)
  dmi.bios.date: 02/17/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1902
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: Crosshair IV Formula
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1902:bd02/17/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnCrosshairIVFormula:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  mtime.conffile..etc.udev.rules.d.91.permissions.rules: 2011-09-24T18:58:37.794113

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