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[linux-lvm] Removing vg and lv after physical drive has been removed



We had a disk fail in a server and replaced it before removing the
drive from LVM.

The server has 4 physical drives (PV's), each with it's own volume
group (VG). Each VG has 2 or more logical volumes (LV's.) Now LVM is
complaining about the missing drive. So we have a VG (vg04) with two
LV's that have become orphans than we need to clear out of the system.

The problem is every time we run any LVM command we get some 'read
failed' errors. I've tried different commands to try to clear it out
but so far without luck:

# lvscan
  /dev/vg04/swap: read failed after 0 of 4096 at 4294901760: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 4294959104: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 0: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 4096: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 995903864832: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 995903922176: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 0: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 4096: Input/output error

# vgreduce vg04 --removemissing --force
  /dev/vg04/swap: read failed after 0 of 4096 at 4294901760: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 4294959104: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 0: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 4096: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 995903864832: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 995903922176: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 0: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 4096: Input/output error
  Volume group "vg04" not found

# vgchange -a n /dev/vg04
  /dev/vg04/swap: read failed after 0 of 4096 at 4294901760: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 4294959104: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 0: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 4096: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 995903864832: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 995903922176: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 0: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 4096: Input/output error
  Volume group "vg04" not found

# lvchange -a n /dev/vg04/vz
  /dev/vg04/swap: read failed after 0 of 4096 at 4294901760: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 4294959104: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 0: Input/output error
  /dev/vg04/swap: read failed after 0 of 4096 at 4096: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 995903864832: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 995903922176: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 0: Input/output error
  /dev/vg04/vz: read failed after 0 of 4096 at 4096: Input/output error
  Volume group "vg04" not found
  Skipping volume group vg04

The missing VG and LV's are not important, we just want to remove them.

I don't know if it's useful, but this is the output from 'lvm dumpconfig':

# lvm dumpconfig
  devices {
        dir="/dev"
        scan="/dev"
        preferred_names=["^/dev/mpath/", "^/dev/mapper/mpath", "^/dev/[hs]d"]
        filter="a/.*/"
        cache_dir="/etc/lvm/cache"
        cache_file_prefix=""
        write_cache_state=1
        sysfs_scan=1
        md_component_detection=1
        md_chunk_alignment=1
        data_alignment_detection=1
        data_alignment=0
        data_alignment_offset_detection=1
        ignore_suspended_devices=0
        disable_after_error_count=0
        require_restorefile_with_uuid=1
  }
  dmeventd {
        mirror_library="libdevmapper-event-lvm2mirror.so"
        snapshot_library="libdevmapper-event-lvm2snapshot.so"
  }
  activation {
        udev_sync=1
        udev_rules=1
        missing_stripe_filler="error"
        reserved_stack=256
        reserved_memory=8192
        process_priority=-18
        mirror_region_size=512
        readahead="auto"
        mirror_log_fault_policy="allocate"
        mirror_image_fault_policy="remove"
        snapshot_autoextend_threshold=100
        snapshot_autoextend_percent=20
        use_mlockall=0
        monitoring=1
        polling_interval=15
  }
  global {
        umask=63
        test=0
        units="h"
        si_unit_consistency=1
        activation=1
        proc="/proc"
        locking_type=1
        wait_for_locks=1
        fallback_to_clustered_locking=1
        fallback_to_local_locking=1
        locking_dir="/var/lock/lvm"
        prioritise_write_locks=1
        abort_on_internal_errors=0
        metadata_read_only=0
  }
  shell {
        history_size=100
  }
  backup {
        backup=1
        backup_dir="/etc/lvm/backup"
        archive=1
        archive_dir="/etc/lvm/archive"
        retain_min=10
        retain_days=30
  }
  log {
        verbose=0
        syslog=1
        overwrite=0
        level=0
        indent=1
        command_names=0
        prefix="  "
  }
#

Any hints appreciated!


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