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%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
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% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
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% Document Info
\author{nhatlong0605}
\pdfinfo{
  /Title (lfcs-module5-storagemanagement.pdf)
  /Creator (Cheatography)
  /Author (nhatlong0605)
  /Subject (LFCS\_Module5\_StorageManagement Cheat Sheet)
}

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\begin{multicols}{3}
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    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
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\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{LFCS\_Module5\_StorageManagement Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{nhatlong0605} via \textcolor{DarkBackground}{\uline{cheatography.com/68292/cs/17228/}}}
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\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
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  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}nhatlong0605 \\
  \uline{cheatography.com/nhatlong0605} \\
  \end{tabulary}
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  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 27th September, 2018.\\
   Updated 27th September, 2018.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
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  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
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  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
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\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{x{3.28482 cm} x{1.69218 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{MBR vs GPT}}  \tn
% Row 0
\SetRowColor{LightBackground}
BIOS & UEFI \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\textless{}2TB & \textgreater{}2TB \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
max 4 partitions & max 128 partitions \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
Beyond 4: extended, logical partition & All 128 are Primary \tn 
% Row Count 6 (+ 2)
% Row 4
\SetRowColor{LightBackground}
fdisk utility & gdisk utility \tn 
% Row Count 7 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.9908 cm} x{2.9862 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Creating partition}}  \tn
% Row 0
\SetRowColor{LightBackground}
cat \seqsplit{/proc/partitiions} & List current partitions \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
fdisk /dev/sdb & Create MBR partition on /dev/sdb \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
gdisk /dev/sdb & Create GPT partition on /dev/sdc \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.33919 cm} x{2.63781 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Create File Systems}}  \tn
% Row 0
\SetRowColor{LightBackground}
mkfs.ext4 -b 1024 -L myfs /dev/sdb1 & Create ext4 file system w/ myfs label (-L) and 1024Mb size (-b) \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
mount /dev/sdb1 /mnt; umount /mnt & Mount /dev/sdb1 on /mnt; unmount \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
mkfs.xfs -L XFSFS /dev/sdb5 & Create xfs file system \tn 
% Row Count 7 (+ 2)
% Row 3
\SetRowColor{white}
mount LABEL=XFSFS /mnt & Mount \tn 
% Row Count 9 (+ 2)
% Row 4
\SetRowColor{LightBackground}
mkfs.btrfs -L butter /dev/sdc1 & Create btrfs file system \tn 
% Row Count 11 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.19448 cm} x{3.78252 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Mount partitions w/ etc fstab}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{vim /etc/fstab} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{/dev/sdb1   /ext4   ext4   defaults   0 0} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{LABEL=XFSFS} & Mount by label \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
mount -a & Mount everything specified in fstab \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.63781 cm} x{2.33919 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Create RAID}}  \tn
% Row 0
\SetRowColor{LightBackground}
gdisk {\emph{disk}}; fd00; partprobe & Create RAID disks \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
mdadm -{}-create /dev/md0 -{}-level=1 -{}-raid-disks=2 /dev/sdd2 /dev/sde1 & Create RAID level 1 from 2 RAID disk \tn 
% Row Count 6 (+ 4)
% Row 2
\SetRowColor{LightBackground}
mffs.ext4 /dev/md0 & Create file system on RAID \tn 
% Row Count 8 (+ 2)
% Row 3
\SetRowColor{white}
mdadm -{}-detail -{}-scan \textgreater{}\textgreater{} /etc/mdadm.conf & Write the RAID config \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
mkdir /raid; mount /dev/md0 /raid & Mount RAID to /raid \tn 
% Row Count 12 (+ 2)
% Row 5
\SetRowColor{white}
vim /etc/fstab; & Mount persistently \tn 
% Row Count 13 (+ 1)
% Row 6
\SetRowColor{LightBackground}
cat /proc/mdstat & Check the RAID if operational \tn 
% Row Count 15 (+ 2)
% Row 7
\SetRowColor{white}
mdadm -{}-detail /dev/md0 & More info about the RAID \tn 
% Row Count 17 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.54287 cm} x{3.43413 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Swap Partition}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{partprobe} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
mkswap /dev/sdb6 & Create swap file system on /dev/sdb6 \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
free -m & Show current swap \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
swapon /dev/sdb6 & Turn swap on \tn 
% Row Count 6 (+ 2)
% Row 4
\SetRowColor{LightBackground}
/etc/fstab & Mounting automatically \tn 
% Row Count 7 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{swapon -a} \tn 
% Row Count 8 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Configure Encrypted Partitions}}  \tn
% Row 0
\SetRowColor{LightBackground}
fdisk /dev/sdb; n; l; w; partprobe & Create the partition \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
cryptsetup luksFormat /dev/sdb7; YES; pass; & Create encrypted device \tn 
% Row Count 5 (+ 3)
% Row 2
\SetRowColor{LightBackground}
cryptsetup luksOpen /dev/sdb7 secret & Open the encrypted partiton to create file system \tn 
% Row Count 8 (+ 3)
% Row 3
\SetRowColor{white}
mffs.ext4 /dev/mapper/secret & Create file system on encrypted device \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
mount /dev/mapper/secret /mnt & Mount the device \tn 
% Row Count 12 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{vim /etc/crypttab; secret /dev/sdb8} \tn 
% Row Count 13 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{/dev/mapper/secret /secret ext4 noauto 0 0} \tn 
% Row Count 14 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.53827 cm} x{2.43873 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Create LVM}}  \tn
% Row 0
\SetRowColor{LightBackground}
gdisk /dev/sdc; 8e00; w; y; partprobe & Create partition for LVM \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
pvcreate /dev/sdc4 & Create physical volume \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
vgcreate vgdata /dev/sdc4 & Put physical volume in volume group \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
lvcreate -L 1G -n lvdata vgdata & Create logical volume \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
lvs & Show current LV \tn 
% Row Count 9 (+ 1)
% Row 5
\SetRowColor{white}
vgs & Show current volume group \tn 
% Row Count 11 (+ 2)
% Row 6
\SetRowColor{LightBackground}
pvs & Show current physical volume \tn 
% Row Count 13 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{LVM volume naming}}  \tn
% Row 0
\SetRowColor{LightBackground}
/dev/mapper; ls -l & List device mapper \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
/dev/vgdata; ls -l & // \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{3.68298 cm} x{1.29402 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Mount LVM persistently}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{/dev/mapper/vgdata-lvdata}  /lvmountpoint  ext4  defaults  0 0 & Mount in fstab \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
dmesg | tail & See errors \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.43873 cm} x{2.53827 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{File System Label \& UUID}}  \tn
% Row 0
\SetRowColor{LightBackground}
tune2fs -L lvdata /dev/vdgata/lvdata & Change volume label \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
blkid & Show UUID for all current file system \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
etc/fstab/; UUID="...." & Mount it \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.63781 cm} x{2.33919 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{LVM Resize}}  \tn
% Row 0
\SetRowColor{LightBackground}
df -h & Show file system info \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
gdisk /dev/sdc; partprobe /dev/sdc & Create another partition \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
vgextend *volumne group name /dev/sdc5 & Extend the volume group \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
lvextend -l +100\%FREE -r /dev/vgdata/lvdata & Resize LVM to take 100\% free storage \tn 
% Row Count 9 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Recover after disk failure}}  \tn
% Row 0
\SetRowColor{LightBackground}
mdadm -{}-create /dev/md0 -l 5 -x 1 /dev/sdb /dev/sdc /dev/sdd /dev/sde & Create RAID md0 level 5 w/ 1 hot spare (-x) \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
mdadm -{}-fail /dev/md0 /dev/sdb & Fail a device \tn 
% Row Count 6 (+ 2)
% Row 2
\SetRowColor{LightBackground}
mdadm -{}-remove /dev/md0 /dev/sdb & Remove the device from RAID array \tn 
% Row Count 8 (+ 2)
% Row 3
\SetRowColor{white}
mdadm -{}- /dev/md0 /dev/sde & Add new device to RAID array \tn 
% Row Count 10 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}