Hi Brett,
First the answers of all your questions -
1. If a self-heal deamon is listed on a host (all of mine show one with
a volume status command) can I assume it's enabled and running?
For your volume, projects self heal daemon is UP and running
2. I assume the volume that has all the self-heals pending has some
serious issues even though I can access the files and directories on
it. If self-heal is running shouldn't the numbers be decreasing?
It should heal the entries and the number of entries coming in
"gluster v heal volname info" command should be decreasing.
It appears to me self-heal is not working properly so how to I get it to
start working or should I delete the volume and start over?
As you can access all the files from mount point, I think the volume
and the files are in good state as of now.
I don't think you should think of deleting your volume before trying
to fix it.
If there is no fix or the fix is taking time you can go ahead with
that option.
-----------------------
Why all these options are off?
performance.quick-read: off
performance.parallel-readdir: off
performance.readdir-ahead: off
performance.write-behind: off
performance.read-ahead: off
Although this should not matter to your issue but I think you should
enable all the above unless you have a reason to not to do so.
--------------------
I would like you to perform following steps and provide some more
information -
1 - Try to restart self heal and see if that works.
"gluster v start volume force" will kill and restart the self heal
processes.
2 - If step 1 is not fruitful, get the list of entries need to be
healed and pick one of the entry to heal. I mean we should focus on
one entry to find out why it is
not getting healed instead of all the 5900 entries. Let's call it entry1.
3 - Now access the entry1 from mount point, read, write on it and
see if this entry has been healed. Check for heal info. Accessing
file from mount point triggers client side heal
which could also heal the file.
4 - Check for the logs in /var/log/gluster, mount logs and glustershd
logs should be checked and provided.
5 - Get the external attributes of entry1 from all the bricks.
If the path of the entry1 on mount point is /a/b/c/entry1 then you
have to run following command on all the nodes -
getfattr -m. -d -e hex <path of the brick on the node>/a/b/c/entry1
Please provide the output of above command too.
---
Ashish
------------------------------------------------------------------------
*From: *"Brett Holcomb" <[email protected]>
*To: *[email protected]
*Sent: *Friday, December 28, 2018 3:49:50 AM
*Subject: *Re: [Gluster-users] Self Heal Confusion
Resend as I did not reply to the list earlier. TBird responded to
the poster and not the list.
On 12/27/18 11:46 AM, Brett Holcomb wrote:
Thank you. I appreciate the help Here is the information. Let
me know if you need anything else. I'm fairly new to gluster.
Gluster version is 5.2
1. gluster v info
Volume Name: projects
Type: Distributed-Replicate
Volume ID: 5aac71aa-feaa-44e9-a4f9-cb4dd6e0fdc3
Status: Started
Snapshot Count: 0
Number of Bricks: 2 x 3 = 6
Transport-type: tcp
Bricks:
Brick1: gfssrv1:/srv/gfs01/Projects
Brick2: gfssrv2:/srv/gfs01/Projects
Brick3: gfssrv3:/srv/gfs01/Projects
Brick4: gfssrv4:/srv/gfs01/Projects
Brick5: gfssrv5:/srv/gfs01/Projects
Brick6: gfssrv6:/srv/gfs01/Projects
Options Reconfigured:
cluster.self-heal-daemon: enable
performance.quick-read: off
performance.parallel-readdir: off
performance.readdir-ahead: off
performance.write-behind: off
performance.read-ahead: off
performance.client-io-threads: off
nfs.disable: on
transport.address-family: inet
server.allow-insecure: on
storage.build-pgfid: on
changelog.changelog: on
changelog.capture-del-path: on
2. gluster v status
Status of volume: projects
Gluster process TCP Port RDMA Port
Online Pid
------------------------------------------------------------------------------
Brick gfssrv1:/srv/gfs01/Projects 49154 0
Y 7213
Brick gfssrv2:/srv/gfs01/Projects 49154 0
Y 6932
Brick gfssrv3:/srv/gfs01/Projects 49154 0
Y 6920
Brick gfssrv4:/srv/gfs01/Projects 49154 0
Y 6732
Brick gfssrv5:/srv/gfs01/Projects 49154 0
Y 6950
Brick gfssrv6:/srv/gfs01/Projects 49154 0
Y 6879
Self-heal Daemon on localhost N/A N/A
Y 11484
Self-heal Daemon on gfssrv2 N/A N/A
Y 10366
Self-heal Daemon on gfssrv4 N/A N/A
Y 9872
Self-heal Daemon on srv-1-gfs3.corp.l1049h.
net N/A N/A
Y 9892
Self-heal Daemon on gfssrv6 N/A N/A
Y 10372
Self-heal Daemon on gfssrv5 N/A N/A
Y 10761
Task Status of Volume projects
------------------------------------------------------------------------------
There are no active volume tasks
3. I've given the summary since the actual list for two volumes
is around 5900 entries.
Brick gfssrv1:/srv/gfs01/Projects
Status: Connected
Total Number of entries: 85
Number of entries in heal pending: 85
Number of entries in split-brain: 0
Number of entries possibly healing: 0
Brick gfssrv2:/srv/gfs01/Projects
Status: Connected
Total Number of entries: 0
Number of entries in heal pending: 0
Number of entries in split-brain: 0
Number of entries possibly healing: 0
Brick gfssrv3:/srv/gfs01/Projects
Status: Connected
Total Number of entries: 0
Number of entries in heal pending: 0
Number of entries in split-brain: 0
Number of entries possibly healing: 0
Brick gfssrv4:/srv/gfs01/Projects
Status: Connected
Total Number of entries: 0
Number of entries in heal pending: 0
Number of entries in split-brain: 0
Number of entries possibly healing: 0
Brick gfssrv5:/srv/gfs01/Projects
Status: Connected
Total Number of entries: 58854
Number of entries in heal pending: 58854
Number of entries in split-brain: 0
Number of entries possibly healing: 0
Brick gfssrv6:/srv/gfs01/Projects
Status: Connected
Total Number of entries: 58854
Number of entries in heal pending: 58854
Number of entries in split-brain: 0
Number of entries possibly healing: 0
On 12/27/18 3:09 AM, Ashish Pandey wrote:
Hi Brett,
Could you please tell us more about the setup?
1 - Gluster v info
2 - gluster v status
3 - gluster v heal <volname> info
These are the very basic information to start with debugging
or suggesting any workaround.
It should always be included when asking such questions on
mailing list so that people can reply sooner.
Note: Please hide IP address/hostname or any other
information you don't want world to see.
---
Ashish
------------------------------------------------------------------------
*From: *"Brett Holcomb" <[email protected]>
*To: *[email protected]
*Sent: *Thursday, December 27, 2018 12:19:15 AM
*Subject: *Re: [Gluster-users] Self Heal Confusion
Still no change in the heals pending. I found this
reference,
https://archive.fosdem.org/2017/schedule/event/glusterselinux/attachments/slides/1876/export/events/attachments/glusterselinux/slides/1876/fosdem.pdf,
which mentions the default SELinux context for a brick and
that internal operations such as self-heal, rebalance should
be ignored. but they do not elaborate on what ignore means -
is it just not doing self-heal or something else.
I did set SELinux to permissive and nothing changed. I'll
try setting the bricks to the context mentioned in this pdf
and see what happens.
On 12/20/18 8:26 PM, John Strunk wrote:
Assuming your bricks are up... yes, the heal count should
be decreasing.
There is/was a bug wherein self-heal would stop healing
but would still be running. I don't know whether your
version is affected, but the remedy is to just restart
the self-heal daemon.
Force start one of the volumes that has heals pending.
The bricks are already running, but it will cause shd to
restart and, assuming this is the problem, healing should
begin...
$ gluster vol start my-pending-heal-vol force
Others could better comment on the status of the bug.
-John
On Thu, Dec 20, 2018 at 5:45 PM Brett Holcomb
<[email protected] <mailto:[email protected]>> wrote:
I have one volume that has 85 pending entries in
healing and two more
volumes with 58,854 entries in healing pending.
These numbers are from
the volume heal info summary command. They have
stayed constant for two
days now. I've read the gluster docs and many more.
The Gluster docs
just give some commands and non gluster docs
basically repeat that.
Given that it appears no self-healing is going on for
my volume I am
confused as to why.
1. If a self-heal deamon is listed on a host (all of
mine show one with
a volume status command) can I assume it's enabled
and running?
2. I assume the volume that has all the self-heals
pending has some
serious issues even though I can access the files and
directories on
it. If self-heal is running shouldn't the numbers be
decreasing?
It appears to me self-heal is not working properly so
how to I get it to
start working or should I delete the volume and start
over?
I'm running gluster 5.2 on Centos 7 latest and updated.
Thank you.
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