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linux:shell_commands:fdisk
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linux:shell_commands:fdisk [2018/06/20 10:27] tplecko |
linux:shell_commands:fdisk [2018/06/20 10:30] (current) tplecko |
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| ====== Create partitions using CLI on linux ====== | ====== Create partitions using CLI on linux ====== | ||
| First and foremost: | First and foremost: | ||
| + | |||
| **!! WARNING !!** | **!! WARNING !!** | ||
| Line 7: | Line 8: | ||
| To quickly set up a drive up as a single ext4 partition... | To quickly set up a drive up as a single ext4 partition... | ||
| View detected devices of class "DISK" | View detected devices of class "DISK" | ||
| - | <code bash>lshw -C disk</code> | + | <code shell>lshw -C disk</code> |
| - | + | View existing partition table(s) | |
| - | View existing partition table(s) | + | <code shell>fdisk -l</code> |
| - | + | Edit the partition table for my chosen device (in this case, "sdx") | |
| - | fdisk -l | + | <code shell>fdisk /dev/sdx</code> |
| - | + | Within FDISK, press: | |
| - | Edit the partition table for my chosen device (in this case, "sdx") | + | <code> |
| - | + | d ...to delete the current partition | |
| - | fdisk /dev/sdx | + | n ...to create a new partition |
| - | + | p ...to specify it as a PRIMARY partition | |
| - | Within FDISK, press: | + | 1 ...to set it as the 1ST primary partition |
| - | + | w ...to write the changes. | |
| - | d ...to delete the current partition | + | </code> |
| - | + | Display the new partition table: | |
| - | n ...to create a new partition | + | <code shell>fdisk -l</code> |
| - | + | Format the new partition's filesystem as type ext4 | |
| - | p ...to specify it as a PRIMARY partition | + | <code shell>mkfs -t ext4 /dev/sdx1</code> |
| - | + | Create a new directory where the new drive will mount into: | |
| - | 1 ...to set it as the 1ST primary partition | + | <code shell> |
| - | + | mkdir /storage | |
| - | w ...to write the changes. | + | mount /dev/sdx1 /storage |
| - | + | </code> | |
| - | Display the new partition table: | + | |
| - | + | ||
| - | fdisk -l | + | |
| - | + | ||
| - | Format the new partition's filesystem as type ext4 | + | |
| - | + | ||
| - | mkfs -t ext4 /dev/sdx1 | + | |
| - | + | ||
| - | Create a new directory where the new drive will mount into: | + | |
| - | + | ||
| - | mkdir /storage | + | |
| - | mount /dev/sdx1 /storage | + | |
| TUNING | TUNING | ||
| - | + | Remove reserved blocks (i.e. set to 0%), since this drive is just for user data | |
| - | Remove reserved blocks (i.e. set to 0%), since this drive is just for user data | + | <code shell>tune2fs -m 0 /dev/sdx1</code> |
| - | + | Since server is on UPS, Set write-back so apps don't wait for actual disk writes | |
| - | tune2fs -m 0 /dev/sdx1 | + | <code shell>tune2fs -o journal_data_writeback /dev/sdx1</code> |
| - | + | Mount at boot up using /etc/fstab and also set write-back policy | |
| - | Since server is on UPS, Set write-back so apps don't wait for actual disk writes | + | <code shell>vi /etc/fstab</code> |
| - | + | Find (or add) the relevant line in fstab for your drive. Parameters in fstab are separated by white space, for example the drive described above might appear as: | |
| - | tune2fs -o journal_data_writeback /dev/sdx1 | + | <code shell>/dev/sdx1 /storage ext4 relatime,errors=remount-ro 0 1</code> |
| - | + | * The first parameter identifies the partition (either by /dev/ or a long UUID); | |
| - | Mount at boot up using /etc/fstab and also set write-back policy | + | * The second parameter is the path the partition will be mounted to; |
| - | + | * Third is the filesystem type; | |
| - | vi /etc/fstab | + | * The fourth parameter contains the options; |
| - | + | * Fifth is the dump schedule for backups; and, | |
| - | Find (or add) the relevant line in fstab for your drive. Parameters in fstab are separated by white space, for example the drive described above might appear as: | + | * The sixth parameter is pass-number (used to control fsck order). |
| - | + | ||
| - | /dev/sdx1 /storage ext4 relatime,errors=remount-ro 0 1 | + | |
| - | + | ||
| - | The first parameter identifies the partition (either by /dev/ or a long UUID); | + | |
| - | The second parameter is the path the partition will be mounted to; | + | |
| - | Third is the filesystem type; | + | |
| - | The fourth parameter contains the options; | + | |
| - | Fifth is the dump schedule for backups; and, | + | |
| - | The sixth parameter is pass-number (used to control fsck order). | + | |
| Change the options (4th parameter) to: | Change the options (4th parameter) to: | ||
| - | + | <code shell>noatime,nodiratime,data=writeback,barrier=0,nobh,errors=remount-ro</code> | |
| - | noatime,nodiratime,data=writeback,barrier=0,nobh,errors=remount-ro | + | |
| Reboot to check that everything went well. | Reboot to check that everything went well. | ||
| Remember these commands are destructive! Have backups and be careful! | Remember these commands are destructive! Have backups and be careful! | ||
linux/shell_commands/fdisk.txt · Last modified: 2018/06/20 10:30 by tplecko
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