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institute_lorentz:gnulinux_workstations [2017/09/08 09:49] – [The home disk] lenocil | institute_lorentz:gnulinux_workstations [2020/09/30 08:54] – [GNU/Linux Workstations] lenocil | ||
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====== GNU/Linux Workstations ====== | ====== GNU/Linux Workstations ====== | ||
- | The standard Lorentz Institute workstation runs the GNU/Linux operating system | + | The standard Lorentz Institute workstation runs the [[https:// |
- | are configured | + | are configured |
- | You are allowed to install and/or build packages locally (directories to which you have access), but for system-wide installations you must file a request through our [[https:// | + | You are allowed to install and/or build packages locally (directories to which you have writing |
- | Although the workstations might differ in their hardware specifications, | + | Although the workstations might differ in their hardware specifications, |
- | you can access | + | you can access |
not accessible, such as in the event of a network disruption. | not accessible, such as in the event of a network disruption. | ||
===== The home disk ===== | ===== The home disk ===== | ||
The home disk is `automounted' | The home disk is `automounted' | ||
- | < | + | < |
$ df /home | $ df /home | ||
Filesystem | Filesystem | ||
home:/ | home:/ | ||
</ | </ | ||
- | Each user has an **allocated quota**__Underlined Text__ | + | Each user has an **__allocated quota__** on the home disk depending on their role within the Lorentz Institute. The standard quota is 4GB, nonetheless it is possible to request extra space. To check your quota settings type |
- | < | + | < |
$ quota -s | $ quota -s | ||
Disk quotas for user xxxxxx (uid 999x99): | Disk quotas for user xxxxxx (uid 999x99): | ||
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| | ||
</ | </ | ||
- | :!: TIP: Regularly check that you are below your assigned quota. Your workstation will stop working correctly if softwares cannot write temporary files in your home folder any more. | + | :!: Regularly check that you are below your assigned quota. Your workstation will stop working correctly if softwares cannot write temporary files in your home folder any more. |
To compile a list of the ten largest files in a directory execute | To compile a list of the ten largest files in a directory execute | ||
- | < | + | < |
du -h / | du -h / | ||
</ | </ | ||
- | Then clean up responsibly. | + | Then clean up responsibly. |
==== Home disk data availability ==== | ==== Home disk data availability ==== | ||
The IL home directories are hosted on a iSCSI array of disks arranged in a RAID | The IL home directories are hosted on a iSCSI array of disks arranged in a RAID | ||
- | configuration. Automatic snapshots (a sort of incremental backup) of the whole home disk are performed | + | configuration. Automatic snapshots (a sort of incremental backup) of the whole home disk are performed |
other words, we should be able to revert to a version of your files that is 16 days old. | other words, we should be able to revert to a version of your files that is 16 days old. | ||
===== Local disks ===== | ===== Local disks ===== | ||
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/ | / | ||
</ | </ | ||
- | Usually | + | In most cases, **but not always**, |
- | To check if a RAID configuration | + | To check if any of your workstation' |
< | < | ||
$ cat / | $ cat / | ||
- | Personalities : | + | Personalities : [raid1] |
+ | md127 : active raid1 sdd[2] sdc[0] | ||
+ | 1953383488 blocks super 1.2 [2/2] [UU] | ||
+ | bitmap: 0/15 pages [0KB], 65536KB chunk | ||
unused devices: < | unused devices: < | ||
+ | |||
</ | </ | ||
- | In the example above there are no disks arranged | + | The example above shows that two disks are arranged |
+ | |||
+ | :!: The backup of any of the data you might have on the ''/ | ||
===== The shell interpreter ===== | ===== The shell interpreter ===== | ||
The Lorentz workstations come with a set of pre-installed shell interpreters. Your login shell can be chosen upon registration of your Lorentz account (HL 409b). Alternatively, | The Lorentz workstations come with a set of pre-installed shell interpreters. Your login shell can be chosen upon registration of your Lorentz account (HL 409b). Alternatively, | ||
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csh | csh | ||
</ | </ | ||
+ | or change your default interpreter by invoking '' | ||
===== Access to other workstation disks ===== | ===== Access to other workstation disks ===== | ||
- | Partitions | + | All data disks named data// |
< | < | ||
/ | / | ||
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Here we only give a summary of useful commands. | Here we only give a summary of useful commands. | ||
- | < | + | < |
# shows which environment modules are available | # shows which environment modules are available | ||
module avail | module avail | ||
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Should you need assistance operating your workstation, | Should you need assistance operating your workstation, | ||
- | Comments and suggestions to improve this guide are welcome. | + | |