With Solaris 11, Oracle introduces the new zpool split command to split the ZFS pool (SPARC / x86 ). This comes in handy to increase the size of the rpool. Below are the high level steps involved : Steps Involved attach a mirror device to the rpool reboot off the mirror (to verify everything works). split the original disk from the pool. set the "autoexpand" property of the rpool Detailed procedure 1. Assuming that your initial rpool has the disk c0t0d0s0 and that you have a new … [Read more...] about How To Increase rpool Size On Solaris 11 (Requires a Reboot)
ZFS
How To Delete Files on a ZFS Filesystem that is 100% Full
When a ZFS file system has no space left then the deletion of files can fail with "disk quota exceeded". The post provides different ways to create free space to overcome the situation. 1. Truncating files If the files can not be removed directly, we can first truncate them and then delete them. # cat /dev/null > /file/to/delete # rm /file/to/delete Alternatives: there are other options to free up space in the zpool, e.g. 1. increase the quota if there is space in the zpool left 2. … [Read more...] about How To Delete Files on a ZFS Filesystem that is 100% Full
How to check zpool status in Solaris
The post describes few basic commands to check the health of a ZFS pool. 1. Basic Storage Pool Health Status The simplest way to request a quick overview of pool health status by zpool status -x command. Example: # zpool status -x all pools are healthy You can list the pool state for a specific pool by specifying the pool name as follows: Example: # zpool status -x tank pool 'tank' is healthy 2. Detailed Health Status You can request a more detailed health summary by using the … [Read more...] about How to check zpool status in Solaris
How to find zpool version and filesystem version in Solaris
Upgrading the ZFS filesystem and zpool versions is a one-way operation. Once upgraded, the versions cannot be downgraded. This will prevent booting from older boot environments if support for the upgraded zpool/filesystem version is not available within those boot environments. Thus it is important to chcek the zpool version before the upgrade. The current zpool version can be checked with either of the following commands: # zpool upgrade # zpool get version [zpool name] For example: # … [Read more...] about How to find zpool version and filesystem version in Solaris
Solaris ZFS : How to import 2 pools that have the same names
It is possible that you may have to manage 2 pools that have the same name. For example, if you have a pool name "datapool" and you have another from some other storage array called "datapool". You may wish to import this second pool (with the same name) to your system. ZFS will not allow the system to have 2 pools with the same name. Therefore we have to rename one of the pool to some other name. There are 2 scenarios when importing pools with same name. 1. One pool is already imported 2. … [Read more...] about Solaris ZFS : How to import 2 pools that have the same names
How to install a ZFS boot block in solaris
The post discusses about how to install ZFS boot block on a system running a ZFS root filesystem. This is normally required when a system fails to boot from a disk containing a root filesystem. A typical error may include: The file just loaded does not appear to be executable Bootblk: can't find the boot program. Solution Boot from DVD/network/failsafe image In order to install a new ZFS boot block, you need to first boot from DVD, network or the failsafe image on the system. ok> boot … [Read more...] about How to install a ZFS boot block in solaris
How to mount the zfs rpool while booted from CD [SPARC]
To be able to troubleshoot booting issues, sometimes we have to boot the system in single user mode using the CDROM. This is required to access the root file system and find out the issue causing the boot problem. This post describes how to boot using CDROM and mount a zfs root file system (rpool). 1. Boot the system from a CDROM in single user mode. ok boot cdrom -s Boot device: /pci@8,700000/scsi@1/disk@6,0:f File and args: -s SunOS[TM] Release 5.10 Version Generic_137137-09 … [Read more...] about How to mount the zfs rpool while booted from CD [SPARC]
How To Use ‘zpool split’ to Split rpool in solaris 11 (x86/x64)
A mirrored ZFS storage pool can be quickly cloned as a backup pool by using the zpool split command. You can use this feature to split a mirrored root pool, but the pool that is split off is not bootable until you perform some additional steps. Some of the required actions are different for SPARC vs x86/x64 due to the difference of the OBP vs GRUB between the architectures. This article focuses on the steps required to split rpool in x86/x64 architecture. Caveats and Assumptions The … [Read more...] about How To Use ‘zpool split’ to Split rpool in solaris 11 (x86/x64)
How To Use ‘zpool split’ to Split rpool in solaris 11 (SPARC)
A mirrored ZFS storage pool can be quickly cloned as a backup pool by using the zpool split command. You can use this feature to split a mirrored root pool, but the pool that is split off is not bootable until you perform some additional steps. Caveats and Assumptions 1.The new/split pool must be used on the same host or the same server family type and architecture. ie: If the source rpool is imported and split on a T5120, the new pool must also be used on the same server type … [Read more...] about How To Use ‘zpool split’ to Split rpool in solaris 11 (SPARC)
How to add Additional Storage Space Created from Dynamic LUN Expansion in ZFS online
Most of the storage arrays nowadays provide the feature of dynamic LUN expansion. This feature allows you to grow your existing volume on the fly without affecting existing data or I/O. Dynamic LUN expansion increases the capacity of the physical storage. You must then make Solaris-aware that the device has grown, and if a file system resides on the device, it must also be grown. Before LUN expansion 1. Here is the disk that was used to create the zpool as seen in the format command output … [Read more...] about How to add Additional Storage Space Created from Dynamic LUN Expansion in ZFS online