lpfs 0.2.0

Retriving infomations from linux proc filesystem
Documentation 
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//! > 5.2.18.  /proc/mdstat
//! > This file contains the current information for multiple-disk, RAID configurations. If the system does not contain such a configuration, then /proc/mdstat looks similar to the following:
//! > Personalities :  read_ahead not set unused devices: <none>
//! > This file remains in the same state as seen above unless a software RAID or md device is present. In that case, view /proc/mdstat to find the current status of mdX RAID devices.
//! > The /proc/mdstat file below shows a system with its md0 configured as a RAID 1 device, while it is currently re-syncing the disks:
//! > Personalities : [linear] [raid1] read_ahead 1024 sectors
//! > md0: active raid1 sda2[1] sdb2[0] 9940 blocks [2/2] [UU] resync=1% finish=12.3min algorithm 2 [3/3] [UUU]
//! > unused devices: <none>
//! 
//! -- https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/5/html/deployment_guide/s1-proc-topfiles#s2-proc-mdstat
//! 

pub fn mdstat() -> Result<String, crate::ProcErr> {
    let mut content = std::fs::read_to_string("/proc/mdstat")?;
    content.pop();
    Ok(content)
}