One of the prime job of Unix administrators will be extending and reducing the volumes/filesystems according to the application team requirement.In Veritas volume manages,we carry out such a tasks in online without un-mounting the filesystems. To increase or reduce the filesystem, you need to add or remove the disks from the diskgroup in vxvm. But in ZFS, once […]
Tutorials
ZFS – Datasets Administration and Emulated Volumes
A dataset is a child (virtual) filesystem of the parent zpool or parent dataset. Solaris ZFS Datasets are very light weight and easy to administrate. Theatrically speaking, we can create 2^64 datasets in single zpool. Solaris ZFS datasets is similar to VXVM volume but not completely. These datasets doesn’t require any vfstab entry to mount […]
Solaris ZFS – Free Tutorial/Training
Oracle took a brave decision by making ZFS as default root filesystem in Solaris 11 onwards. So ZFS knowledge is must for all of the Solaris administrator who is going to work on Solaris 11.I have worked on many volume manages like SVM(Solaris volume manager),VXVM (veritas volume manager) and LVM (Logical volume manager) but ZFS is one-step ahead compare to other volume […]
Solaris ZFS – Interview Questions
As we know Oracle made ZFS is a default root filesystem from Solaris 11 onwards. This shows their future plans of improving ZFS and making it as worlds best volume manager cum filesystem in near future.Customers would like to have ZFS in their environment since its a inbuilt volume manager and there is no additional operating cost unlike VXVM. They preferred […]
How to add ZPOOL-ZFS to Solaris local zones ?
Oracle is marketing Oracle’s ZFS(Zeta Byte filesystem) is the next generation filesystem. If you say next generation filesystem,will it be enhanced to support OS virtualization ? Yes.It is.Unlike VXVM, we can delegate the entire zpool to local zones.So that we can manage the entire zpool from the local zone level without logging in to global zone.It includes creating […]
veritas volume manager installation step by step guide
This post describe about installation of VXVM on Solaris node and initialization issues with vxvm after the package installation. Unlike other packages installation,we have installer available in storage foundation bundle to minimize the complex.So no need to use pkgadd commands unless until there is an issue with the installer.Here is step by step guide for vxvm installation with putty output. Environment: Operating […]
VXVM tutorial 11 – Linked Break-off snapshot
Linked break-off snapshot In this post we are going to see about Linked break-off snapshot. Unlike the full-sized instant snapshots, this volume can be set up in a different disk group from the data volume and possible to refresh the snapshot. High-level plan for backup using Linked break-off snapshot 1. Prepare the data volume for snapshot 2. Create […]
VXVM tutorial 10 – Third-mirror break-off snapshots
VXVM(VERITAS VOLUME MANAGER TRAINING) 10 OF 12 In this post, we are going to see traditional mirror break-off snapshot.To perform this snapshot ,we need free space equal to volume size on the diskgroup.It typically perform the volume mirror and it will make the new plex as snapshot volume for backup operations.High Level plan for backup of database volume using […]
VXVM Tutorial 9 – Space-optimized instant snapshot
VXVM(VERITAS VOLUME MANAGER TRAINING) 9 OF 10 In this post we are going to see Space-optimized instant snapshot.Unlike other snapshots,we no need equal volume space to generate this snapshot. Using the cache objects,we can create a instant snapshot.Depends on data changes on volume,cache objects size may varied.Ex:Volume size is increasing 100M/per hour,then you need minimum 100MB […]
VXVM Tutorial 8 – VXVM Instant Snapshots
VXVM(veritas volume manager training) 8 of 10 A snapshot is the state of a volume at a particular point in time. Veritas Volume Manager snapshot capability for taking an image of a volume at a given point in time.It provides various snapshot depends on the environments and product cost. There are three type of snapshot […]