It depends on the type of failure. Some changelogs may be missing or
corrupted. If you run out of your disk space, the metadata dump maybe be
corrupted. You should also use changelogs from metaloggers for recovery,
etc. You may want to check the history of our group
(http://sourceforge.net/search/?group_id=228631&type_of_search=mlists) and
find some detailed explanations made by Thomas S Hatch, eg.:
http://sourceforge.net/mailarchive/message.php?msg_id=27235785
Kind regards
Michal
-----Original Message-----
From: Alexander Akhobadze [mailto:akh...@ri...]
Sent: Monday, September 26, 2011 8:10 AM
To: Michał Borychowski
Cc: moo...@li...
Subject: Re: [Moosefs-users] Auto MetaRestore
Hm...
So as far as I understand something may go wrong during restore
and/or something needs my attension.
Could you describe more exactly what scenarios may I face to ?
wbr
Alexander
======================================================
Hi!
Of course you may do it but we recommend recovering the master server
manually - it is wise to observe the mfsmetarestore process. The automatic
recovery process is quite complicated and until some better scripts are
prepared, you'd rather recover it manually.
Kind regards
Michal
-----Original Message-----
From: Alexander Akhobadze [mailto:akh...@ri...]
Sent: Friday, August 26, 2011 12:51 PM
To: moo...@li...
Subject: [Moosefs-users] Auto MetaRestore
Hi All!
I wonder if it is a good idea to put in init/rc script
which starts mfsmaster something like
mfs_data_path=`grep DATA_PATH /etc/mfsmaster.cfg | grep -v ^# | awk '{print
$NF}'`
if [ ! -f $mfs_data_path/metadata.mfs ]
then
mfsmetarestore -a -d $mfs_data_path
fi
???????
In my opinion it is bare necessity to automatically make MooseFS healthy
in case of power failure/restore.
wbr
Alexander
----------------------------------------------------------------------------
--
EMC VNX: the world's simplest storage, starting under $10K
The only unified storage solution that offers unified management
Up to 160% more powerful than alternatives and 25% more efficient.
Guaranteed. http://p.sf.net/sfu/emc-vnx-dev2dev
_______________________________________________
moosefs-users mailing list
moo...@li...
https://lists.sourceforge.net/lists/listinfo/moosefs-users
----------------------------------------------------------------------------
--
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2dcopy1
_______________________________________________
moosefs-users mailing list
moo...@li...
https://lists.sourceforge.net/lists/listinfo/moosefs-users
|
