[linux-lvm] Doc or definition of max_archives setting for lvm.conf?
Gary Eheman
eheman at funsoft.com
Tue Feb 11 19:19:00 UTC 2014
On 02/11/2014 12:01 PM, Zdenek Kabelac wrote:
> Dne 11.2.2014 17:00, Gary Eheman napsal(a):
>> There is an example syntax reference to a variable named "max_archives" in the
>> man page for lvm.conf, but it does not provide a definition for the variable.
>> The actual lvm.conf on my distribution contains no references or comments to
>> enlighten me on the specifics for max_archives. While the variable name
>> certainly gives me the clue that it is likely that not more than that many
>> archive files would exist in the archive directory, can someone provide a more
>> detailed description?
>>
>> Since I can make no assumptions on this system, is it the case that if the
>> max_archives specified in lvm.conf is reached that the oldest archive is
>> automatically deleted as the newest one is created?
>>
>> I have a lot of snapshot activity on the system where I want to implement
>> max_archives, and the number of archives keeps growing. Naturally, I have not
>> yet reached the retain_days number of days, but would like to keep the number
>> of archives below a reasonable number before retain_days might be reached.
>
>
> # Configuration of metadata backups and archiving. In LVM2 when we
> # talk about a 'backup' we mean making a copy of the metadata for the
> # *current* system. The 'archive' contains old metadata configurations.
> # Backups are stored in a human readable text format.
> backup {
>
> # Should we maintain a backup of the current metadata configuration ?
> # Use 1 for Yes; 0 for No.
> # Think very hard before turning this off!
> backup = 1
>
> # Where shall we keep it ?
> # Remember to back up this directory regularly!
> backup_dir = "/etc/lvm/backup"
>
> # Should we maintain an archive of old metadata configurations.
> # Use 1 for Yes; 0 for No.
> # On by default. Think very hard before turning this off.
> archive = 1
>
> # Where should archived files go ?
> # Remember to back up this directory regularly!
> archive_dir = "/etc/lvm/archive"
>
> # What is the minimum number of archive files you wish to keep ?
> retain_min = 10
>
> # What is the minimum time you wish to keep an archive file for ?
> retain_days = 30
> }
>
>
> Zdenek
>
> _______________________________________________
Yes, that section is precisely how my /etc/lvm/lvm.conf is coded. But it still does
not tell me the answers to my questions.
ls -ltr /etc/lvm/archive/ | wc -l
306
After 4 weeks of taking and deleting snapshots for the volumes that need to be backed
up, I currently have 306 archive files. What is going to make the number of archive
files decrease (or cease increasing beyond a ceiling) on this system automatically?
--
Gary Eheman
Fundamental Software, Inc.
http://www.funsoft.com
More information about the linux-lvm
mailing list