-m reserved-blocks-percentage
Specify the percentage of the filesystem blocks reserved for the super-user. This avoids
fragmentation, and allows root-owned daemons, such as syslogd(8), to continue to function
correctly after non-privileged processes are prevented from writing to the filesystem. The
default percentage is 5%.
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-I inode-size
Specify the size of each inode in bytes. mke2fs creates 256-byte inodes by default. In kernels
after 2.6.10 and some earlier vendor kernels it is possible to utilize inodes larger than 128
bytes to store extended attributes for improved performance. The inode-size value must be a power
of 2 larger or equal to 128. The larger the inode-size the more space the inode table will
consume, and this reduces the usable space in the filesystem and can also negatively impact
performance. Extended attributes stored in large inodes are not visible with older kernels, and
such filesystems will not be mountable with 2.4 kernels at all. It is not possible to change this
value after the filesystem is created.
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