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 |
Displaying Disk Information | # Vxdisk list # vxdisk list c1t0d0s2 | |
DG | Creating a Disk Group By adding a new Disk ( add disk by vxdiskadm ) | # vxdg init mktdg mkgdg01=c1t0d0s2 # vxdiskadd c1t0d0s2 ( will ask ) |
DG | Adding a disk to a DG ( vxdiskadm ) | # vxdiskadd c1t0d0s2 ( will ask ) or # vxdg –g Datadg adddisk datadg02= c1t0d0s2 |
DG | 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 <dgid> -C will clear lock , -f will force a import # vxrecover –g <dg_name> -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 <dgid> 3. after repair deport the Dg from host2 : # vxdg –h host1 deport rootdg1 3. Start volumes on host1 # vxrecover –g rootdg -sb |
DG | 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 | |
Renaming a disk in DG | # vxedit –g sundg rename disk1 disk2 | |
Administering DMP
DMP | 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=<Encl_name> |
DMP | List Attributes of all Controllers | # vxdmpadm listctlr all |
DMP | Listing Info about Enclosures | # vxdmpadm listenclosure all |
DMP | Renaming a Enclosure | # Vxdmpadm setattr enclosure <current_name> name=<new_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=<policy_u_need> [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_name> | |
SD | Creating Subdisk | Syntax is : vxmake –g <dg_name> sd <sd_name> <vx_diskname>,<offset>,<size> # 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 <size> split <sd_name> <new_sd1> <new_sd2> # vxsd –s 1000m split disk03-01 disk03-01 disk03-02 |
SD | Joining subdisks | # vxsd join <sd_1> <sd-2> <combined_sd> |
SD/PX | Associating SD to Plex | # vxsd –g <dgname> assoc <existing_plex> <sd1> <sd2> <sd3> |
SD/ PX | Creating new Concat Plex from SD | # vxmake –g <dg_name> plex <new_plex> sd=<sd1>,<sd2>,<sd3> |
SD/PX | Dissociating SD from Plex | # vxsd –g <dg_name> dis <sd> |
SD | Deleting a SD | # # vxsd –g <dg_name> rm <sd> |
Administering Plex
PX | Display Plex Info | # vxprint –lp # vxprint –l <plex-name> |
PX | Listing Free Plex | #vxprint -pt |
PX | Creating new Concat Plex from SD | # vxmake –g <dg_name> plex <new_plex> sd=<sd1>,<sd2>,<sd3> |
PX | Creating a Stripe Plex from SD | # vxmake plex <new_plex> layout=stripe stwidth=32 ncolumn=2 sd=<sd1>,<sd2> |
VX PX | Attaching a Plex to an existing volume Or Re-attaching | # vxplex –g <dg_name> att <vol_name> <plex_name> |
VX PX | Creating a new volume from a Plex | # vxmake [–g <dg_name>] -U <usetype> vol <new_vol_name> plex=<plex_1> usetype is generally : fsgen or raid5 |
VX PX | Creating a New Mirrored volume from two identical Plexes | # vxmake [–g <dg_name>] -U fsgen vol <vol_name> plex=<plex_1>,.<plex_1>,. |
VX PX | Making a Plex offline | # vxmend off <plex> # vxmend -o force off <plex> To forcefully make a plex off |
VX PX | Detaching a Plex from a volume ( detach but maintains the association) | # vxplex [–g <dg_name>] det <plex> |
VX PX | Re-attaching a Plex to a currently ENABLED volume | # vxplex [–g <dg_name>] <volume_name> <plex> The OFFLINE Plex will recover & will becomes ACTIVE |
VX PX | Putting The Plex back OnlinePS=STALE, | # vxmend on <plex_name> 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 <plex_of_your_choice> |
PX | Moving content of a Plex to a New PX | # vxplex mv <original_plex> <new_plex> |
PX | Fixing and activating a STALE Plex | # vxmend fix active <plex> |
PX | Changing the Plex state to Clean | # vxmend fix clean <plex> |
VX PX | Copying content of a Volume to a New Plexes | # vxplex cp <volume_to_be_copied> <plex_name> 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 <dg_name>] maxsize layout =<layout like > [attributes] # vxassist –h datadg maxsize layout=mirror |
VX | To create a concatenated default volume without specifying ang particular disk | # vxassist –b [-g <dg_name>] make <volume_name> <length> -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 <dg_name>] -b make <volume_name> <size> 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 <description_file> |
VX | Initialize & start a Volume | # vxvol start <volume> - enable ,initialize , activae the volume |
VX | Enable a volume without initializing it to restore data from backup | # vxvol init enable <volume> |
VX | Then activate the volume | # vxvol init active <volume> |
VX | To start a DISABLED volume | # vxrecover –s <volume> , if u do not specify a name , it will recover all |
VX | Stopping a Enabled volume | # vxvol b [-g <dg_name>] stop <volname> # vxvol stopall |
VX | Putting a Mirrored vol in Maintenance mode whose all mirrors are STALE. Volume will be DETACHED | # vxvol maint <volume> # |
VX | To find how much u can grow a Vol With mentioning the disks | # vxassist maxgrow <volume> , 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 <volume> <new_size> # vxassist [-b] growby <volume> <space_to_be_added> Similary shrinkto & shrinkby if u use Vxfs |
VX | Removing a STOPPED Volume | # vxassist remove volume <volume> |
VX | Removing a STOPPED Volume along with plexes , sub disks | # vxedit -r –f rm <volume> |
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 <mount_point>
The size - 28770304 I got from vxprint –htr <volume_name>
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 <raw device> , -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
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