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home_server:home_server_setup:disk_check [2019-11-20 Wed wk47 18:24] – baumkphome_server:home_server_setup:disk_check [2023-04-30 Sun wk17 17:43] (current) – external edit 127.0.0.1
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 +{{tag>linux fsck format partition boot corrupt parted}}
 =====fsck - file system check===== =====fsck - file system check=====
  
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 The root file system can not be unmounted and checked. Two possible options to check the system are: The root file system can not be unmounted and checked. Two possible options to check the system are:
  
-  *Force the Root Filesystem to use fsck during reboot, The Geek Stuff covers this well in, How to Force Check Root Filesystem using fsck During Reboot. A summary of key commands: +  *Force the Root Filesystem to use fsck during reboot, The Geek Stuff covers this well in, [[https://www.thegeekstuff.com/2016/03/forcefsck-on-reboot/ |How to Force Check Root Filesystem using fsck During Reboot]]. A summary of key commands: 
-  *The Root file system is automatically checked at certain intervals. To check this: "sudo tune2fs -l /dev/sda1 | grep -i check".+  *The Root file system is automatically checked at certain intervals. To check this: ''sudo tune2fs -l /dev/sda1 | grep -i check''.
   *[[http://www.thegeekstuff.com/2016/03/forcefsck-on-reboot/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+TheGeekStuff+(The+Geek+Stuff)|To force a recheck at the next reboot]], create the file forcefsck. At the next reboot a fsck will be performed and the forcefsck file removed. Commands:   *[[http://www.thegeekstuff.com/2016/03/forcefsck-on-reboot/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+TheGeekStuff+(The+Geek+Stuff)|To force a recheck at the next reboot]], create the file forcefsck. At the next reboot a fsck will be performed and the forcefsck file removed. Commands:
-     *"cd /" +     *''cd /'' 
-     *"sudo touch forcefsck"+     *''sudo touch forcefsck''
   *Boot the system to a rescue file system. From the rescue file system the main boot drive may then be checked with fsck. (Further details not given.)   *Boot the system to a rescue file system. From the rescue file system the main boot drive may then be checked with fsck. (Further details not given.)
  
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 ====Some other file system tips:==== ====Some other file system tips:====
  
-  *To check current mounted disks use "df -h" +  *To check current mounted disks use ''df -h'' 
-  *To check current disks use "sudo fdisk -l". (This is a disk partition command. Be careful with use.) +  *To check current disks use ''sudo fdisk -l''. (This is a disk partition command. Be careful with use.) 
-  *To check current disks use "sudo parted -l". (This is a disk partition command, more modern than fdisk. Be careful with use.) +  *To check current disks use ''sudo parted -l''. (This is a disk partition command, more modern than fdisk. Be careful with use.) 
-  *To check directory size use "sudo du %%--%%max-depth=1 %%--%%all -h" +  *To check directory size use ''sudo du %%--%%max-depth=1 %%--%%all -h'' 
-  *The filesystem boot file is /etc/fstab, "sudo vim /etc/fstab". (Be careful with editing this.) +  *The filesystem boot file is /etc/fstab, ''sudo vim /etc/fstab''. (Be careful with editing this.) 
-<- home_server:home_server_setup:kvm|Prev ^ home_server:home_server_setup:summary|Start page ^ home_server:home_server_setup:other_services ->+  *To check ext2/3/4 file system information and configuration of a partition ''sudo tune2fs -l /dev/sdX'' 
 + 
 +++++Home Server Index|<pagelist&header> 
 +*[[home_server:home_server_setup:summary]] 
 +*[[home_server:home_server_setup:home_it_setup]] 
 +*[[home_server:home_server_setup:Network_setup]] 
 +*[[home_server:home_server_setup:kvm]] 
 +*[[home_server:home_server_setup:vnc_setup]] 
 +*[[home_server:home_server_setup:disk_check]] 
 +*[[home_server:home_server_setup:other_services:index]] 
 +</pagelist>++++ 
 + 
 + 
 +====Find Information on Hard disks==== 
 +The ‘’lsblk’’ command has a lot of information returned. 
 +The ‘’tune2fs’’ command is used by the system administrator to change/modify tunable parameters on ext2, ext3 and ext4 type filesystems.  The command to display filesystem information is ‘’tune2fs -l /dev/sda2’’.  The ‘’df’’ command lists current mounted disks. 
 + 
 + 
 +---- 
 + 
 +<- home_server:home_server_setup:vnc_setup|Prev ^ home_server:home_server_setup:summary|Start page ^ home_server:home_server_setup:other_services:index|Next -> 
 +  *''lsblk'' by itself give the basic drive partition and mount point information. 
 +  *''lsblk -o NAME,MODEL,SERIAL,WWN,HCTL,MOUNTPOINT'' gives more comprehensive information:  
 +    *WWN is a unique identifier ode list on the drive 
 +    *HCTL lists the drive sata port 
 +  *''lsblk --help'' to list all the options