From the course: Red Hat Enterprise Linux 8 Essential Training

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Create an iSCSI backstore

Create an iSCSI backstore

From the course: Red Hat Enterprise Linux 8 Essential Training

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Create an iSCSI backstore

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- [Instructor] In Enterprise Linux 6, the term backing store was used for mappings created in the target. These are now called storage objects. In Enterprise Linux 7, we use the term backstore to reference different types of backing devices, such as block devices and logical volumes. Backstores supported by the LIO iSCSI target include FILEIO, BLOCK, PSCSI, and memory copy RAMdisks. FILEIO backstores are Linux file-backed storage. FILEIO can be either write back or write through. Using write back enables the Linux file system cache, which can improve performance. However, it also increases the likelihood of data loss, so write through is recommended. To create a FILEIO backstore, we'd use the /backstores/fileio path with the create subcommand. We can disable write back by adding the write_back=false option for the device. BLOCK backstores can be any block device that exists in /sys/block. This includes physical devices such as hard disks, solid-state disks, optical drives like CDs and…

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