Capacity to inode Ratio:
Ratio: 1TB Quota to 625,000 iNodes
An inode is a record that describes a file, directory, or link. This information is stored in a dedicated flash pool on Taiga and is of a finite capacity. To ensure that the inode pool does not run out of space before the capacity pools, this quota ratio is implemented. So for example if your project has a 10TB quota on Taiga, it will also have a quota of 6.25 million inodes. If you have any questions about this ratio please contact open a support ticket.
Block Size:
2MB
For a balance of throughput performance and file space efficiency, a block size of 2MB has been chosen for the Taiga file system. Larger file sizes help larger streaming data movement go faster, in general doing large I/O to file systems is encouraged if possible.
Default Stripe Size:
Stripe Size: 1
Number of OSTs in Taiga: 16
Lustre is capable of striping data over multiple OSTs to increase performance and help balance data across the disks. The default stripe for Taiga is set to 1 but this value is overridden as the file being written gets larger and larger; this behavior is determined by the PFL configured for Taiga which is described in the next section. If a user wants to see how many OSTs a file is striped across they can run the below command; the example shows a file that is striped across 2 OSTs.