VXVM command reference
Administering Disk Group & Disks ( Most of DG tasks can be done by vxdiskadm )
| DG | Displaying DG Info | # vxdg list # vxdg list rootdg |
| DG | Displaying Free space in a DG | # vxdg free # vxdg –g rootdg free |
| DISK | Displaying Disk Information | # Vxdisk list # vxdisk list c1t0d0s2 |
| DG DISK | Creating a Disk Group By adding a new Disk ( add disk by vxdiskadm ) | # vxdg init mktdg mkgdg01=c1t0d0s2 # vxdiskadd c1t0d0s2 ( will ask ) |
| DG DISK | Adding a disk to a DG ( vxdiskadm ) | # vxdiskadd c1t0d0s2 ( will ask ) or # vxdg –g Datadg adddisk datadg02= c1t0d0s2 |
| DG DISK | Removing a dsk w/o subdisk from a DG ( vxdiskadm ) | # vxdg –g datadg disk02 |
| DG | Deporting a DG ( vxdiskadm menu 9 ) | # vxvol –g datadg stopall # vxdg deport datadg |
| DG | Importing a DG ( vxdiskadm menu 9) | # vxdg import -C will clear lock , -f will force a import # vxrecover –g -sb # vxvol –g rootdg startall |
| DG | Temporarily renaming a DG while importing on a importing Host | # vxdg –t –n newrootdg import rootdg -C can clear a import lock |
| DG | Permanently renaming a diskgroup while importing on a Importing Host | # vxdg –n newrootdg import rootdg |
| DG | Renaming a DG during export | # vxdg [-h second_host] –n new_name deport dgname |
| DG | Temporarily removing rootdg from host1 to host2 for repair & then moving it back | 1. On host1 find the DG-ID by command : # vxdisk –s list 2. on host2 , import it with diff name : # vxdg –tC –n rootgd1 import 3. after repair deport the Dg from host2 : # vxdg –h host1 deport rootdg1 3. Start volumes on host1 # vxrecover –g rootdg -sb |
| DG DISK | Moving disk between DG | 1. Remove the disk from 1st DG # vxdg rmdisk disk02 2. Add it to second DG # vxdg –g Datadg adddisk datadg02= c1t0d0s2 |
| DG | To clear lock from a imported disk | # vxdisk clearimport disk01 |
| DG | Destroying a DG | # vxdg destroy datadg |
| DG | Joining DG (rootdg cant be source) | # vxdg join sourcedg targetdg # vxrecover –g targetdg –sb # vxvol –g targetdg startall |
| | Upgradeing a DG to highest version | # vxdg upgrade data01 |
| | | |
| | | |
| | | |
Administering DMP
| DMP DISK | Activating Deactivating Disk,contoller enclosures | # vxdiskadm |
| DMP | Info about a DMP Node ( Disk) | # vxdmpadm getdmpnode nodename=c3t2d1s2 |
| DMP | Info about a Enclosure | # vxdmpadm getdmpnode nodename= |
| DMP | List Attributes of all Controllers | # vxdmpadm listctlr all |
| DMP | Listing Info about Enclosures | # vxdmpadm listenclosure all |
| DMP | Renaming a Enclosure | # Vxdmpadm setattr enclosure name= |
| DMP | Display all paths of a DMP Node | # vxdmpadm getsubpaths dmpnodename=c3t2d1s2 |
| DMP | Display all paths through a Controller | # vxdmpadm getsubpaths ctlr=c3 |
| DMP | Disabling a Controller | # vxdmpadm disable ctlr=c2 |
| DMP | Enabling a Controller | # vxdmpadm enable ctlr=c2 |
| DMP | Status Check of DMP Restore Daemon | # vxdmpadm stat restored |
| DMP | Status Check of DMP Error Daemon | # vxdmpadm stat errord |
| DMP | Stopping restore Daemon | # vxdmpadm stop restore ( Same for Error Daemon ) |
| DMP | Starting The Restore daemon Default Policy is check_isabled Default Interval is 300 | #vxdiskadm start restore policy= [interval = second] policies are : check_all – Check all Paths except manually disabled. Disable down paths & revives paths which comes up . check_alternate - Checks that atleast one path is healthy ( same as “all” if only 2 paths) check_disabled - checks previously down paths & revive them once they come up check_periodic – see book …..J |
Administering Subdisk
| | Displaying SD info | # vxprint –st # vxprint –l |
| SD | Creating Subdisk | Syntax is : vxmake –g sd ,<offset>, # vxmake –g mydg sd disk01-01 disk01,32000,1500m Offset can be checked by: # vxdg –g mydg free |
| SD | Moving a SD from one disk to another | Moving sd disk03-01 to two diff SD on disk22 # vxsd mv disk03-01 disk22-01 disk22-02 |
| SD | Splitting a SD in two equal SD | Format is : vxsd –s split # vxsd –s 1000m split disk03-01 disk03-01 disk03-02 |
| SD | Joining subdisks | # vxsd join |
| SD/PX | Associating SD to Plex | # vxsd –g assoc |
| SD/ PX | Creating new Concat Plex from SD | # vxmake –g plex sd=,, |
| SD/PX | Dissociating SD from Plex | # vxsd –g dis |
| SD | Deleting a SD | # # vxsd –g rm |
Administering Plex
| PX | Display Plex Info | # vxprint –lp # vxprint –l |
| PX | Listing Free Plex | #vxprint -pt |
| PX | Creating new Concat Plex from SD | # vxmake –g plex sd=,, |
| PX | Creating a Stripe Plex from SD | # vxmake plex layout=stripe stwidth=32 ncolumn=2 sd=, |
| VX PX | Attaching a Plex to an existing volume Or Re-attaching | # vxplex –g att |
| VX PX | Creating a new volume from a Plex | # vxmake [–g ] -U <usetype> vol plex= usetype is generally : fsgen or raid5 |
| VX PX | Creating a New Mirrored volume from two identical Plexes | # vxmake [–g ] -U fsgen vol plex=,.,. |
| VX PX | Making a Plex offline | # vxmend off # vxmend -o force off To forcefully make a plex off |
| VX PX | Detaching a Plex from a volume ( detach but maintains the association) | # vxplex [–g ] det |
| VX PX | Re-attaching a Plex to a currently ENABLED volume | # vxplex [–g ] The OFFLINE Plex will recover & will becomes ACTIVE |
| VX PX | Putting The Plex back OnlinePS=STALE, PKS = DETACHED | # vxmend on The Plex state will be STALE, Will be ACTIVE once volume is started in case it is stopped or the plex is resynced in case the volume is always active. |
| VX PX | Cleaning one of the Plex of a Unstartable volume | # vxmend fix clean |
| PX | Moving content of a Plex to a New PX | # vxplex mv |
| PX | Fixing and activating a STALE Plex | # vxmend fix active |
| PX | Changing the Plex state to Clean | # vxmend fix clean |
| VX PX | Copying content of a Volume to a New Plexes | # vxplex cp This plex will not be attached to the volume by itself |
| | | |
| | | |
Administering Volume
Creating Volume Step By Step by administering Disk , Subdisk & Plex is already covered
Another Straight forward way is using Vxassist . By default vxassist creates a concatenated volume on available disks.
| VX | Viewing Default attributes of vxassist | # vxassist help showattrs or edit /etc/default/vxassist |
| VX | Discover how large a volume can be created | # vxassist [-g ] maxsize layout = [attributes] # vxassist –h datadg maxsize layout=mirror |
| VX | To create a concatenated default volume without specifying ang particular disk | # vxassist –b [-g ] make -b will make the volume immediately available by initializing & starting it # vxassist –b –g datadg make voldata1 10g |
| VX | To create a concatenated default volume on specified disks | # vxassist –b –g datadg make voldata1 10g disk01 disk02 Exclude a disk : # vxassist –b –g datadg make voldata1 10g !disk05 Exclude disks in a controller : # vxassist –b –g datadg make voldata1 10g !ctlr:c2 |
| | Creating a Basic Mirrored Volume | # vxassist [-g ] -b make layout=mirror |
| | Create a Vol by vxassist but don’t initiate & start it | Use the option init=none |
| | | |
| VX | Crerating a volume using a Vxmake description file | Vxmake –d |
| VX | Initialize & start a Volume | # vxvol start - enable ,initialize , activae the volume |
| VX | Enable a volume without initializing it to restore data from backup | # vxvol init enable |
| VX | Then activate the volume | # vxvol init active |
| VX | To start a DISABLED volume | # vxrecover –s , if u do not specify a name , it will recover all |
| | | |
| VX | Stopping a Enabled volume | # vxvol b [-g ] stop # vxvol stopall |
| VX | Putting a Mirrored vol in Maintenance mode whose all mirrors are STALE. Volume will be DETACHED | # vxvol maint # |
| | | |
| VX | To find how much u can grow a Vol With mentioning the disks | # vxassist maxgrow , U can not shrink a UFS , but VxFS – grow ,shrink |
| VX FS | To increase a UFS volume ( -b = bg) | # vxresize –F ufs datavol 10g disk10 disk11 ( Mirrored vol needs 2 disks at least) |
| VX FS | Resizing using vxassist ( Encapsuled root disk can not be changed) | # vxassist [-b] growto # vxassist [-b] growby Similary shrinkto & shrinkby if u use Vxfs |
| VX | Removing a STOPPED Volume | # vxassist remove volume |
| VX | Removing a STOPPED Volume along with plexes , sub disks | # vxedit -r –f rm |
| VX | Moving volume from a VM disk | # vxdiskadm Menu 7 |
WHAT IS DIFF BETWEEN DISABLED & DETACHED volumes
Increasing Filesystem after increasing Volume number
/usr/lib/fs/vxfs/fsadm -F vxfs -b 28770304
The size - 28770304 I got from vxprint –htr
VxFS ( 1 sector = 512 byte)
| FS | Creating a 12288 Sector VxFS | # mkfs –F vxfs /dev/vx/rdsk/datadg/vol03 12288 ( Can be a non volume raw dev also) |
| FS | Identify a FS type | # fstyp , -v will show lot more info |
| FS | Extending/Shrinking a FS mounted at /data1 to New Size 22000 sectors | # /usr/lib/fs/vxfs/fsadm –F vxfs –b 22000 /data1 Using mount point # /usr/lib/fs/vxfs/fsadm –F vxfs –b 22000 –r /dev/vx/rdsk/datadg/vol1 Using Raw dev |
| FS | Reorganize/Defrag a FS ( Mounted) before shrinking | # /usr/lib/fs/vxfs/fsadm –EeDd /data1 -e extends , -d directories , -E/D report |
You can Extend UFS but can not shrink it
No comments:
Post a Comment