How do I delete multiple files on Linux?
To delete multiple files at once, use the rm command followed by the file names separated by space. When using regular expansions, first list the files with the ls command so that you can see what files will be deleted before running the rm command.
How do I get rid of a folder with some contents inside without any confirmation to remove the files?
By default, when used without any option rm does not remove directories. To delete an empty directory, use the -d ( –dir ) option and to delete a non-empty directory, and all of its contents use the -r ( –recursive or -R ) option.
Can you access small files on the Lustre filesystem?
Accessing small files on the Lustre filesystem is not efficient. When possible, keep them on an NFS-mounted filesystem (such as your home filesystem on Pleiades /u/ username) or copy them from Lustre to /tmp on each node at the beginning of the job, and then access them from /tmp.
When do I need to increase the stripe count in lustre?
When you copy large files onto the Lustre filesystems, such as from Lou or from remote systems, be sure to use a sufficiently increased stripe count. You can do this before you create the files by using the lfs setstripe command, or you can transfer the files using the shiftc tool, which automatically stripes the files.
Can you create a directory with a larger stripe count?
You can create a new directory with a larger stripe count and copy the larger files to that directory. Note that moving files into that directory with the mv command will not change the stripe count of the files. Files must be created in or copied to a directory to inherit the stripe count properties of a directory.
When to use Lustre to improve I / O performance?
The Lustre stripe count sets the number of OSTs the file will be written to. When multiple processes access blocks of data in the same large file in parallel, I/O performance may be improved by setting the stripe count to a larger value.