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git://sourceware.org/git/lvm2.git
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aee27dc7ba
For reporting commands (pvs,vgs,lvs,pvdisplay,vgdisplay,lvdisplay) we do not need to repeat the label scan of devices in vg_read if they all had matching metadata in the initial label scan. The data read by label scan can just be reused for the vg_read. This cuts the amount of device i/o in half, from two reads of each device to one. We have to be careful to avoid repairing the VG if we've skipped rescanning. (The VG repair code is very poor, and will be redone soon.)
245 lines
6.0 KiB
C
245 lines
6.0 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2014 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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xx(config,
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"Display and manipulate configuration information",
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PERMITTED_READ_ONLY | NO_METADATA_PROCESSING)
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xx(devtypes,
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"Display recognised built-in block device types",
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PERMITTED_READ_ONLY | NO_METADATA_PROCESSING)
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xx(dumpconfig,
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"Display and manipulate configuration information",
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PERMITTED_READ_ONLY | NO_METADATA_PROCESSING)
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xx(formats,
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"List available metadata formats",
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PERMITTED_READ_ONLY | NO_METADATA_PROCESSING)
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xx(help,
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"Display help for commands",
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PERMITTED_READ_ONLY | NO_METADATA_PROCESSING)
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xx(fullreport,
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"Display full report",
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PERMITTED_READ_ONLY | ALL_VGS_IS_DEFAULT | LOCKD_VG_SH)
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xx(lastlog,
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"Display last command's log report",
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PERMITTED_READ_ONLY | NO_METADATA_PROCESSING)
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xx(lvchange,
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"Change the attributes of logical volume(s)",
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PERMITTED_READ_ONLY)
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xx(lvconvert,
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"Change logical volume layout",
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GET_VGNAME_FROM_OPTIONS)
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xx(lvcreate,
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"Create a logical volume",
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0)
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xx(lvdisplay,
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"Display information about a logical volume",
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PERMITTED_READ_ONLY | ALL_VGS_IS_DEFAULT | LOCKD_VG_SH | CAN_USE_ONE_SCAN)
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xx(lvextend,
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"Add space to a logical volume",
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0)
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xx(lvmchange,
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"With the device mapper, this is obsolete and does nothing.",
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0)
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xx(lvmconfig,
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"Display and manipulate configuration information",
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PERMITTED_READ_ONLY | NO_METADATA_PROCESSING)
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xx(lvmdiskscan,
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"List devices that may be used as physical volumes",
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PERMITTED_READ_ONLY | ENABLE_ALL_DEVS)
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xx(lvmsadc,
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"Collect activity data",
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0)
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xx(lvmsar,
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"Create activity report",
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0)
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xx(lvreduce,
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"Reduce the size of a logical volume",
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0)
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xx(lvremove,
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"Remove logical volume(s) from the system",
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ALL_VGS_IS_DEFAULT) /* all VGs only with --select */
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xx(lvrename,
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"Rename a logical volume",
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0)
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xx(lvresize,
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"Resize a logical volume",
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0)
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xx(lvs,
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"Display information about logical volumes",
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PERMITTED_READ_ONLY | ALL_VGS_IS_DEFAULT | LOCKD_VG_SH | CAN_USE_ONE_SCAN)
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xx(lvscan,
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"List all logical volumes in all volume groups",
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PERMITTED_READ_ONLY | ALL_VGS_IS_DEFAULT | LOCKD_VG_SH | NO_LVMETAD_AUTOSCAN)
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xx(pvchange,
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"Change attributes of physical volume(s)",
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0)
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xx(pvresize,
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"Resize physical volume(s)",
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0)
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xx(pvck,
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"Check the consistency of physical volume(s)",
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LOCKD_VG_SH)
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xx(pvcreate,
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"Initialize physical volume(s) for use by LVM",
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ENABLE_ALL_DEVS)
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xx(pvdata,
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"Display the on-disk metadata for physical volume(s)",
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0)
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xx(pvdisplay,
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"Display various attributes of physical volume(s)",
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PERMITTED_READ_ONLY | ENABLE_ALL_DEVS | ENABLE_DUPLICATE_DEVS | LOCKD_VG_SH | CAN_USE_ONE_SCAN)
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/* ALL_VGS_IS_DEFAULT is for polldaemon to find pvmoves in-progress using process_each_vg. */
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xx(pvmove,
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"Move extents from one physical volume to another",
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ALL_VGS_IS_DEFAULT | DISALLOW_TAG_ARGS)
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xx(lvpoll,
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"Continue already initiated poll operation on a logical volume",
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0)
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xx(pvremove,
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"Remove LVM label(s) from physical volume(s)",
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ENABLE_ALL_DEVS)
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xx(pvs,
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"Display information about physical volumes",
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PERMITTED_READ_ONLY | ALL_VGS_IS_DEFAULT | ENABLE_ALL_DEVS | ENABLE_DUPLICATE_DEVS | LOCKD_VG_SH | CAN_USE_ONE_SCAN)
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xx(pvscan,
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"List all physical volumes",
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PERMITTED_READ_ONLY | LOCKD_VG_SH | NO_LVMETAD_AUTOSCAN | IGNORE_PERSISTENT_FILTER)
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xx(segtypes,
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"List available segment types",
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PERMITTED_READ_ONLY | NO_METADATA_PROCESSING)
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xx(systemid,
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"Display the system ID, if any, currently set on this host",
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PERMITTED_READ_ONLY | NO_METADATA_PROCESSING)
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xx(tags,
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"List tags defined on this host",
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PERMITTED_READ_ONLY | NO_METADATA_PROCESSING)
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xx(vgcfgbackup,
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"Backup volume group configuration(s)",
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PERMITTED_READ_ONLY | ALL_VGS_IS_DEFAULT | LOCKD_VG_SH)
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xx(vgcfgrestore,
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"Restore volume group configuration",
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0)
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xx(vgchange,
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"Change volume group attributes",
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PERMITTED_READ_ONLY | ALL_VGS_IS_DEFAULT)
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xx(vgck,
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"Check the consistency of volume group(s)",
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ALL_VGS_IS_DEFAULT | LOCKD_VG_SH)
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xx(vgconvert,
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"Change volume group metadata format",
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0)
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xx(vgcreate,
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"Create a volume group",
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MUST_USE_ALL_ARGS | ENABLE_ALL_DEVS)
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xx(vgdisplay,
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"Display volume group information",
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PERMITTED_READ_ONLY | ALL_VGS_IS_DEFAULT | LOCKD_VG_SH | CAN_USE_ONE_SCAN)
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xx(vgexport,
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"Unregister volume group(s) from the system",
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ALL_VGS_IS_DEFAULT)
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xx(vgextend,
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"Add physical volumes to a volume group",
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MUST_USE_ALL_ARGS | ENABLE_ALL_DEVS)
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xx(vgimport,
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"Register exported volume group with system",
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ALL_VGS_IS_DEFAULT | NO_LVMETAD_AUTOSCAN)
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xx(vgimportclone,
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"Import a VG from cloned PVs",
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NO_LVMETAD_AUTOSCAN)
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xx(vgmerge,
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"Merge volume groups",
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0)
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xx(vgmknodes,
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"Create the special files for volume group devices in /dev",
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ALL_VGS_IS_DEFAULT)
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xx(vgreduce,
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"Remove physical volume(s) from a volume group",
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0)
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xx(vgremove,
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"Remove volume group(s)",
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ALL_VGS_IS_DEFAULT) /* all VGs only with select */
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xx(vgrename,
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"Rename a volume group",
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ALLOW_UUID_AS_NAME)
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xx(vgs,
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"Display information about volume groups",
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PERMITTED_READ_ONLY | ALL_VGS_IS_DEFAULT | LOCKD_VG_SH | CAN_USE_ONE_SCAN)
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xx(vgscan,
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"Search for all volume groups",
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PERMITTED_READ_ONLY | ALL_VGS_IS_DEFAULT | LOCKD_VG_SH | NO_LVMETAD_AUTOSCAN | IGNORE_PERSISTENT_FILTER)
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xx(vgsplit,
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"Move physical volumes into a new or existing volume group",
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0)
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xx(version,
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"Display software and driver version information",
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PERMITTED_READ_ONLY | NO_METADATA_PROCESSING)
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