13.07.2016 13:24, Pranith Kumar Karampuri пишет:
On Wed, Jul 13, 2016 at 2:50 PM, Dmitry Melekhov <[email protected]
<mailto:[email protected]>> wrote:
13.07.2016 13:10, Pranith Kumar Karampuri пишет:
On Wed, Jul 13, 2016 at 2:25 PM, Dmitry Melekhov <[email protected]
<mailto:[email protected]>> wrote:
13.07.2016 11:40, Pranith Kumar Karampuri пишет:
You recipe doesn't work :-( If there is difference
between bricks directories due to direct brick
manipulation it leads to problems.
You have to execute "gluster volume heal <volname> full"
for triggering full heal.
yeah, but I need to know that I need to execute it.
any help from gluster or only external script?
I guess it is not too difficult to set up cron/systemd.timer to
run this command once in a while right?
Too difficult? No.
So you are suggesting to run heal full by cron? Right?
Really, I don't know how much resources this full heal may need in
real installations.
If not much- why self-heal doesn't call it?
Because we don't expect people to touch the bricks. For a corner case
it doesn't make sense to keep doing full filesystem scan. But we do
provide the CLI for people who want it.
Well, why run heal every 10 minutes if no problems are expected?
From your link:
The index heal is done:
a) Every 600 seconds (can be changed via the |cluster.heal-timeout|
volume option)
b) When it is explicitly triggered via the |gluster vol heal <VOLNAME>|
command
c) Whenever a replica brick that was down comes back up.
As I can understand, this index heal runs once per volume, not on
specific node, this is why there is self-heal daemon,
otherwise this can be achieved by cron. If I have node with cron down,
then I'll get no full heal, I can, definitely, run next full heal on
different node by cron :-)
What script do you need to write? I didn't get you.
Which compares bricks directories, and, if it there is real need-
it alerts me, I can run heal full or, may be, just trigger files
heal by reading some files over fuse.
Could you , please, tell me how heal full works and why it is not
part of self-heal process?
You can read more about it at:
https://github.com/gluster/glusterfs/blob/master/doc/developer-guide/afr-self-heal-daemon.md
Thank you!
I think it will be wise to add full heal interval to self-heal daemon.
Thank you!
--
Pranith
--
Pranith
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