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Re: Filesystem and free space

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Hi,


On 2021-12-13 2:47 a.m., Tom Dial wrote:
> 
> 
> On 12/12/21 12:28, Teemu Likonen wrote:
>> * 2021-12-12 14:13:19-0500, Polyna-Maude Racicot-Summerside wrote:
>>
>>> How can I ensure that user (or a software being run by a user that
>>> goes crazy) doesn't fill up the whole filesystem ?
>> Commands mkfs.ext4 and tune2fs have this option:
>>
>>     -m reserved-blocks-percentage
>>            Set the percentage of the filesystem which may only be
>>            allocated by privileged processes. Reserving some number of
>>            filesystem blocks for use by privileged processes is done to
>>            avoid filesystem fragmentation, and to allow system daemons,
>>            such as syslogd(8), to continue to function correctly after
>>            non-privileged processes are prevented from writing to the
>>            filesystem. Normally, the default percentage of reserved
>>            blocks is 5%.
>>
>> See the last sentence. By default normal users can't fill the entire
>> space. Use tune2fs to change options for an existing file system.
> 
> In addition, per user and per group file system quotas have been available in Unix and Linux for as long as I can remember. For Debian, see https://debian-handbook.info/browse/stable/sect.quotas.html. Man pages for mkfs.ext4, tune2fs, and edquota (and probably others) have additional relevant information. 
> 
Original post :


Now here's my question :
How can I ensure that user (or a software being run by a user that goes
crazy) doesn't fill up the whole filesystem ?
I know there's quota but what I want to ensure is simply that no user
can write to disk unless there's at least 2 GB left free on partition.
Is this possible ?


> Regards,
> Tom Dial
> 
>>
>> -- /// Teemu Likonen - .-.. https://www.iki.fi/tlikonen/ // OpenPGP: 6965F03973F0D4CA22B9410F0F2CAE0E07608462
> 
> 

-- 
Polyna-Maude R.-Summerside
-Be smart, Be wise, Support opensource development

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Thread

Filesystem and free space Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-12-12 20:20 +0100
  Re: Filesystem and free space Teemu Likonen <tlikonen@iki.fi> - 2021-12-12 20:30 +0100
    Re: Filesystem and free space Tom Dial <tddial@comcast.net> - 2021-12-13 09:20 +0100
      Re: Filesystem and free space Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-12-13 20:20 +0100
  Re: Filesystem and free space Jonathan Dowland <jon+debian-user@dow.land> - 2021-12-13 13:20 +0100

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