Re: [BackupPC-users] No more free inodes

[Frédéric M. <fre...@ju...>]

Le 23/10/2012 14:47, Les Mikesell a écrit :
> On Tue, Oct 23, 2012 at 3:23 AM, Frédéric Massot
> <fre...@ju...>  wrote:
>>>
>>> Just curious: does the content you back up consist mostly of tiny
>>> files without much duplication?   It seems odd to run out of inodes
>>> while still having substantial disk space.
>>
>> I used the command "df -i" on different servers to see those who ate a
>> lot of inode, and it seems that it is the web server with Apache cache
>> enabled.
>>
>> Is that one inode is used by one directory?
>
> Each file and directory will use one, except that hardlinked files
> share their inode.
>
>> I'll use the "-t" option of htcacheclean to remove empty directory, and
>> see if it makes a difference.
>>
>>
>> On a web server most affected:
>>
>> $ df -h
>> Filesystem            Size  Used Avail Use% Mounted on
>> /dev/vda1              92G   52G   36G  60% /
>>
>> $ df -i
>> Filesystem            Inodes   IUsed   IFree IUse% Mounted on
>> /dev/vda1            6111232 4391859 1719373   72% /
>>
>> And the folder "/var/cache/apache2/mod_disk_cache" contains 2956954
>> directories to 13 GB. The limit of the total disk cache size (-l option)
>> is 300 MB ?!
>
> If it is just a cache, it might be reasonable to exclude it from
> backups.   The contents would probably have expired by the time you
> could restore anyway, or already have fresh copies reloaded from the
> original source.

Yes, I put that directory in the list of exclusions.

For the health of this web server, adding the "-t" htcacheclean option 
was good. After one day the number of inode consumed decreased from 72% 
to 25%.


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