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How does ZFS send and receive data work?
The zfs send command creates a stream representation of a snapshot that is written to standard output. By default, a full stream is generated. You can redirect the output to a file or to a different system. The zfs receive command creates a snapshot whose contents are specified in the stream that is provided on standard input.
How to send ZFS from one pool to another?
For example, to send the snapshot stream on a different pool to the same system, use syntax similar to the following: You can use zfs recv as an alias for the zfs receive command. If you are sending the snapshot stream to a different system, pipe the zfs send output through the ssh command.
How to send and receive ZFS snapshots in Solaris?
Saving snapshots– Use the zfs sendand zfs receivecommands to send and receive a ZFS snapshot. You can save incremental changes between snapshots, but you cannot restore files individually. You must restore the entire file system snapshot. These commands do not provide a complete backup solution for saving your ZFS data.
What are the advantages of replicating a ZFS file system?
The advantage of replicating a ZFS file system is that you can re-create a file system on a storage pool on another system, and specify different levels of configuration for the newly created pool, such as RAID-Z, but with identical file system data.
Can you use ZFS recv as an alias for ZFS receive?
You can use zfs recv as an alias for the zfs receive command. If you are sending the snapshot stream to a different system, pipe the zfs send output through the ssh command. For example: When you send a full stream, the destination file system must not exist.
Is there a way to save ZFS files?
You can save incremental changes between snapshots, but you cannot restore files individually. You must restore the entire file system snapshot. These commands do not provide a complete backup solution for saving your ZFS data. Remote replication– Use the zfs sendand zfs receivecommands to copy a file system from one system to another system.
How does ZFS accept an incremental stream?
The original snapshot must already exist on the receiving side to accept the incremental stream. Use the zfs send -R option to send a replication stream of all descendent file systems. When the replication stream is received, all properties, snapshots, descendent file systems, and clones are preserved.
How is the zstreamdump command used in ZFS?
The zstreamdump command can be used to print send stream contents in a human-readable format. As an example, we can create a ZFS filesystem, place an empty file in it, snapshot it, modify that file, then snapshot it again, and send the changes between the first and second snapshot to a file:
You can use zfs recv as an alias for the zfs receive command. If you are sending the snapshot stream to a different system, pipe the zfs send output through the ssh command. For example: When you send a full stream, the destination file system must not exist. You can send incremental data by using the zfs send -i option. For example:
Can you save incremental changes in ZFS?
You can save incremental changes between snapshots, but you cannot restore files individually. You must restore the entire file system snapshot. These commands do not provide a complete backup solution for saving your ZFS data. Remote replication – Use the zfs send and zfs receive commands to copy a file system from one system to another system.
When to use ZFS snapshots and rolling back?
File system snapshots and rolling back snapshots– Use the zfs snapshotand zfs rollbackcommands if you want to easily create a copy of a file system and revert to a previous file system version, if necessary. For example, to restore a file or files from a previous version of a file system, you could use this solution.
Which is the ZFS set can mount on datasetx?
(where datasetx is your dataset in question) to any datasets that you want to mount on boot. This is the zfs default. Best, Phil This appears to be unintended behavior on ZoL, I left the ZFS box alone for a few days and finally gave up and rebooted the said box, and I was able to destroy those snapshots after reboot.