#Openzfs openindiana how to
We also need to know how to replace the failed disk and rebuild the mirror. Well we need to, in order to prepare for disaster we have to know that the mirror will continue with one failed disk in our case. Go on, break your mirror and claim 7 years bad luck The status shows that both disks are online as is the mirror and pool. We can see the two disks participating within the mirror using the status sub-command zpool status pool1 The same would apply no matter how many disks we included into the mirror, we have the single storage which is replicated to all other disks in the array. Using the list command we can see that only the single 128M of space becomes available even though we have used two disk. zpool create pool1 mirror /root/disk1 /root/disk2 With the pool gone we can re-sue the original disk files to create the new mirror. This does exactly what it says on the tin, and of course, all data on the pool will be lost. We add durability with extra disk not space.įirst of all we need to destroy the existing pool and re-use the disk files. If I use two 128M disks, I have 128M space, if I create a mirror on three 128M disks I still have just the 128M of space, and so on with 4. If we had three disks in the mirror we would add durability allowing for two disk failures. Usually a mirror will consist of two disks and allows for a failure of one disk. Whatever is written to one disk in the array is replicated, mirrored, to all other disks in the array. We will use mirror in this example but possibilities include:Ī mirror being RAID level1 and the other raidz being implementations of RAID5.Ī mirror consists of two or more disks. The first that we will look at is a Mirrored Pool using the keyword mirror. We can add fault-tolerance to the pool if we create it with a specified RAID level. We can now start to see the power and speed of management of this file system. Viewing the information from zpool list poool1 and zfs list pool1 confirm the increase to the pool and file system respectively. If we need to add additional storage to this pool we can so and the file system will be increased online accordingly. We can see from the screen capture that the pool is created and mounted now to the /data directory. If it does exist then it will need to be empty. The directory /data, in the following command will be used as the mount point and will be created if it does not exist. If we need the pool to be mounted to a certain directory, then we use the -m option in the create sub-command. The remarkable feature here is that the formatting of the file system, creation of the mount point and mounting were all automated. We can view the file system with zfs list pool1 We can view the pool with zpool list pool1 Not only will the pool have been created but the file system too and it will be mounted to a directory /pool1. Here we have created a pool, pool1, consisting of the single 128M disk. If we add more disk to the pool the data will be striped across the disks but no fault tolerance is provided. The simplest ZFS pool can consist of just one disk. This tutorial will look at ZFS pools, file systems and data sets will be covered in the next Solaris installment. to be in place for different directories within the same file system: Here we see the ZFS file system rpool and its data sets, note that there is no need to format the file system it is created with the pool, data sets allow for different file system attributes such as compression, quotas etc. So in addition to the ZFS pool we can list the default ZFS file system witht eh command zfs list The pool represents the disk space used and creates the initial file-system. In this case we would only see the single pool’s details. However if we have more and we just want to see the single pool we could issue the command zpool list rpool We can run the command as is and we will see all pools, in this case we have just the one, rpool.
This can be seen using the command zpool list During the installation of Solaris 11 the root file system will be created on the pool called rpool the root pool.
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