Notes on Volume Manager (Veritas)
Below is a quick reference on Veritas Volume manager and can be used for revision purposes.
When viewing this document the following is assumed:
<device> = Disk device i.e c1t3d0s2
<disk> = Volume manager name i.e disk01
| vxconfigd | Maintains system configuration in the kernel & disk (private region). If the daemon is stopped it does not disable any configuration state loaded into thekernel. It only affects the ability to make configuration changes until vxconfigd is restarted. |
| vxrelocd | Monitors for failure events and relocates failed subdisks |
| vxiod | The vxiod utility starts, stops, or reports on VER ITAS Volume Manager (VxVM) I/O daemons. An I/O daemon provides a process context for performing I/O in VxVM.Manage extended disk i/o & handles dirty regions, logging |
| vxiod set <number> | Set the number of volume i/o daemons. |
| vxdctl enable | Rebuilds volume and plex device node directories, also this operation will cause vxconfigd to scan for any disks that were newly added since vxconfigd was last started. |
| vxdctl license init | If a license has expired use this command to reread the new licenses entered |
| vxinstall | Install volume manger (use /etc/vx/disk to exclude any disks or controllers) |
| vxiod | Displays # of vxiod daemons that are running. |
| Add a disk slice to volboot | vxdctl add disk <device> type=simple |
| Add a disk slice | vxdisk –f <device> type=simple |
| Add a disk | vxdiskadd c1t0d0 or c1 (all disk on controller) |
| Remove a disk totally from VM | vxdisk rm <device> |
| Remove a disk from a volume | vxdg rmdisk <diskname> |
| Remove a disk slice from VM | vxdctl rm disk <device> |
| Renaming a disk | vxedit rename <old disk name> <new disk name> |
| Off lining disk | vxdisk offline <dev name> i.e. c0t3d0s2 |
| Hot spare | vxedit –g <group> set spare=on <disk> |
| NoHotUse | vxedit –g <group> set nohotuse=on <disk> |
| Encapsulate a disk | vxdisk define c0t0d0s0 type=nopriv |
| Create a disk group | vxdg init group <disk>=<device> |
| Remove a group | vxdg destroy <group> |
| Add a disk to a group | vxdg –g <group> adddisk <disk>=<device> |
| Remove a disk from a group | vxdg –g <group> rmdisk <disk> |
| Import a group | vxdg import <group> |
| Depot a group | vxdg deport <group> |
| List no hot use on disk | vxdg –g <group> nohotuse <disk> |
| List spare space on disk | vxdg –g <group> spare <disk> |
| Display free space | vxdg –g <group> free |
| Adding mirror to root | /etc/vx/bin/vxrootmir <alternate> create rootvol, swap vol, |
| Create a simple volume | vxassist make <volume><size><disk> |
| Mirror a simple volume | vxassist mirror <volume> >disk> |
| Create a stripped volume | vxassist make <volume> <size> layout= stripe |
| Create mirrored volume with log | vxassist make <volume> <size> layout=mirror, log nmirror=# nlog=# |
| Create a raid volume | vxassist make <volume> <size> layout=raid5 |
| Remove a volume | vxvol stop <volume> vxedit –rf rm <volume> |
| Initializing a volume | vxvol init state <volume> [plex]state=clean,enable,active |
| Starting a volume | vxstart <volume> |
| Start a disabled volume | vxrecover –s <volume> |
| Disable a volume | vxvol stop ot stopall |
| Maintennce mode | vxvol maint <volume> |
| Not clean | vxmend mirror clean <plex> |
| No kernel state | vxplex att <vol_name> <plex> |
| Remove a volume | unmount <volume> |
| Extending a volume size | vxresize <volume> <new length> |
| Shrinking a volume size | vxresize <volume> <new length> |
| Extending log size | vxvol set loglen = 2m <volume/log> |
| Detering volume size | vxassit maxsize layout =mirror |
| Recover a volume | Vxmend fix clean <plex> |
| Creating a plex | vxmake plex <plex> sd =<sub disk name> |
| Remove a plex | vxplex –o rm dis <plex> |
| Moving a plex | vxplex mv <original plex> <new plex> |
| Copying a plex | vxplex cp <volume> <new plex> |
| Attaching a plex | vxplex att <volume> <plex> |
| Detaching a plex | vxplex det <plex> |
| Offlining a plex | vxmend off vol01-02 |
| Creating sub-disk | vxmake sd <sub-disk> <disk>, offset, len |
| Removing sub-disk | vxedit rm <sub-disk> |
| Moving sub-disk | vxsd mv <old sub-disk> <new sub-disk> |
| Associating with a plex | vxmake plex <plex> sd=<sub-disk>, … i.e vxmake plex home-1 sd= disk02-01, disk02-00, disk02-02 |
| Dissociating | vxsd dis <sub-disk> |
| Splitting | vxsd –s<size> split sd<new sub><newsub2> |
| Joining | vxsd join <sub-disk1><subdisk2><new subdisk> |
| Display volume info | vxprint –Aht <vol9> |
| Display volume properties | vxprint –vl |
| Display plex properties | vxprint –vp |
| Display sub-disk properties | vxprint –st |
| Display group properties | vxdg list |
| Display detailed group info | vxdg list <volume group> |
| Display all the physical disks | vxdisk list |
| Display detailed disk info | vxdisk list <disk> |
| Check for disk failures | vxstat –g <group>–ff –d |
| Check for plex failures | vxstat –g <group>–ff -p |
| Check for volume failures | vxstat –g <group>–ff -v |
| Iostats | vxstat [–d (disks)] |
| Tracing | vxtrace |
| Display tasks | vxtask list |