Out of curiosity, are you using --inplace?
On 02/05/2015 02:59 PM, David F. Robinson wrote:
Should I run my rsync with --block-size = something other than the default? Is there an optimal value? I think 128k is the max from my quick search. Didn't dig into it throughly though.
David (Sent from mobile)
===============================
David F. Robinson, Ph.D.
President - Corvid Technologies
704.799.6944 x101 [office]
704.252.1310 [cell]
704.799.7974 [fax]
David.Robinson@xxxxxxxxxxxxx
http://www.corvidtechnologies.com
On Feb 5, 2015, at 5:41 PM, Ben Turner <bturner@xxxxxxxxxx> wrote:
----- Original Message -----
From: "Ben Turner" <bturner@xxxxxxxxxx>
To: "David F. Robinson" <david.robinson@xxxxxxxxxxxxx>
Cc: "Pranith Kumar Karampuri" <pkarampu@xxxxxxxxxx>, "Xavier Hernandez" <xhernandez@xxxxxxxxxx>, "Benjamin Turner"
<bennyturns@xxxxxxxxx>, gluster-users@xxxxxxxxxxx, "Gluster Devel" <gluster-devel@xxxxxxxxxxx>
Sent: Thursday, February 5, 2015 5:22:26 PM
Subject: Re: [Gluster-users] missing files
----- Original Message -----
From: "David F. Robinson" <david.robinson@xxxxxxxxxxxxx>
To: "Ben Turner" <bturner@xxxxxxxxxx>
Cc: "Pranith Kumar Karampuri" <pkarampu@xxxxxxxxxx>, "Xavier Hernandez"
<xhernandez@xxxxxxxxxx>, "Benjamin Turner"
<bennyturns@xxxxxxxxx>, gluster-users@xxxxxxxxxxx, "Gluster Devel"
<gluster-devel@xxxxxxxxxxx>
Sent: Thursday, February 5, 2015 5:01:13 PM
Subject: Re: [Gluster-users] missing files
I'll send you the emails I sent Pranith with the logs. What causes these
disconnects?
Thanks David! Disconnects happen when there are interruption in
communication between peers, normally there is ping timeout that happens.
It could be anything from a flaky NW to the system was to busy to respond
to the pings. My initial take is more towards the ladder as rsync is
absolutely the worst use case for gluster - IIRC it writes in 4kb blocks. I
try to keep my writes at least 64KB as in my testing that is the smallest
block size I can write with before perf starts to really drop off. I'll try
something similar in the lab.
Ok I do think that the file being self healed is RCA for what you were seeing. Lets look at one of the disconnects:
data-brick02a-homegfs.log:[2015-02-03 20:54:02.772180] I [server.c:518:server_rpc_notify] 0-homegfs-server: disconnecting connection from gfs01b.corvidtec.com-4175-2015/02/02-16:44:31:179119-homegfs-client-2-0-1
And in the glustershd.log from the gfs01b_glustershd.log file:
[2015-02-03 20:55:48.001797] I [afr-self-heal-entry.c:554:afr_selfheal_entry_do] 0-homegfs-replicate-0: performing entry selfheal on 6c79a368-edaa-432b-bef9-ec690ab42448
[2015-02-03 20:55:49.341996] I [afr-self-heal-common.c:476:afr_log_selfheal] 0-homegfs-replicate-0: Completed entry selfheal on 6c79a368-edaa-432b-bef9-ec690ab42448. source=1 sinks=0
[2015-02-03 20:55:49.343093] I [afr-self-heal-entry.c:554:afr_selfheal_entry_do] 0-homegfs-replicate-0: performing entry selfheal on 792cb0d6-9290-4447-8cd7-2b2d7a116a69
[2015-02-03 20:55:50.463652] I [afr-self-heal-common.c:476:afr_log_selfheal] 0-homegfs-replicate-0: Completed entry selfheal on 792cb0d6-9290-4447-8cd7-2b2d7a116a69. source=1 sinks=0
[2015-02-03 20:55:51.465289] I [afr-self-heal-metadata.c:54:__afr_selfheal_metadata_do] 0-homegfs-replicate-0: performing metadata selfheal on 403e661a-1c27-4e79-9867-c0572aba2b3c
[2015-02-03 20:55:51.466515] I [afr-self-heal-common.c:476:afr_log_selfheal] 0-homegfs-replicate-0: Completed metadata selfheal on 403e661a-1c27-4e79-9867-c0572aba2b3c. source=1 sinks=0
[2015-02-03 20:55:51.467098] I [afr-self-heal-entry.c:554:afr_selfheal_entry_do] 0-homegfs-replicate-0: performing entry selfheal on 403e661a-1c27-4e79-9867-c0572aba2b3c
[2015-02-03 20:55:55.257808] I [afr-self-heal-common.c:476:afr_log_selfheal] 0-homegfs-replicate-0: Completed entry selfheal on 403e661a-1c27-4e79-9867-c0572aba2b3c. source=1 sinks=0
[2015-02-03 20:55:55.258548] I [afr-self-heal-metadata.c:54:__afr_selfheal_metadata_do] 0-homegfs-replicate-0: performing metadata selfheal on c612ee2f-2fb4-4157-a9ab-5a2d5603c541
[2015-02-03 20:55:55.259367] I [afr-self-heal-common.c:476:afr_log_selfheal] 0-homegfs-replicate-0: Completed metadata selfheal on c612ee2f-2fb4-4157-a9ab-5a2d5603c541. source=1 sinks=0
[2015-02-03 20:55:55.259980] I [afr-self-heal-entry.c:554:afr_selfheal_entry_do] 0-homegfs-replicate-0: performing entry selfheal on c612ee2f-2fb4-4157-a9ab-5a2d5603c541
As you can see the self heal logs are just spammed with files being healed, and I looked at a couple of disconnects and I see self heals getting run shortly after on the bricks that were down. Now we need to find the cause of the disconnects, I am thinking once the disconnects are resolved the files should be properly copied over without SH having to fix things. Like I said I'll give this a go on my lab systems and see if I can repro the disconnects, I'll have time to run through it tomorrow. If in the mean time anyone else has a theory / anything to add here it would be appreciated.
-b
-b
David (Sent from mobile)
===============================
David F. Robinson, Ph.D.
President - Corvid Technologies
704.799.6944 x101 [office]
704.252.1310 [cell]
704.799.7974 [fax]
David.Robinson@xxxxxxxxxxxxx
http://www.corvidtechnologies.com
On Feb 5, 2015, at 4:55 PM, Ben Turner <bturner@xxxxxxxxxx> wrote:
----- Original Message -----
From: "Pranith Kumar Karampuri" <pkarampu@xxxxxxxxxx>
To: "Xavier Hernandez" <xhernandez@xxxxxxxxxx>, "David F. Robinson"
<david.robinson@xxxxxxxxxxxxx>, "Benjamin Turner"
<bennyturns@xxxxxxxxx>
Cc: gluster-users@xxxxxxxxxxx, "Gluster Devel"
<gluster-devel@xxxxxxxxxxx>
Sent: Thursday, February 5, 2015 5:30:04 AM
Subject: Re: [Gluster-users] missing files
On 02/05/2015 03:48 PM, Pranith Kumar Karampuri wrote:
I believe David already fixed this. I hope this is the same issue he
told about permissions issue.
Oops, it is not. I will take a look.
Yes David exactly like these:
data-brick02a-homegfs.log:[2015-02-03 19:09:34.568842] I
[server.c:518:server_rpc_notify] 0-homegfs-server: disconnecting
connection from
gfs02a.corvidtec.com-18563-2015/02/03-19:07:58:519134-homegfs-client-2-0-0
data-brick02a-homegfs.log:[2015-02-03 19:09:41.286551] I
[server.c:518:server_rpc_notify] 0-homegfs-server: disconnecting
connection from
gfs01a.corvidtec.com-12804-2015/02/03-19:09:38:497808-homegfs-client-2-0-0
data-brick02a-homegfs.log:[2015-02-03 19:16:35.906412] I
[server.c:518:server_rpc_notify] 0-homegfs-server: disconnecting
connection from
gfs02b.corvidtec.com-27190-2015/02/03-19:15:53:458467-homegfs-client-2-0-0
data-brick02a-homegfs.log:[2015-02-03 19:51:22.761293] I
[server.c:518:server_rpc_notify] 0-homegfs-server: disconnecting
connection from
gfs01a.corvidtec.com-25926-2015/02/03-19:51:02:89070-homegfs-client-2-0-0
data-brick02a-homegfs.log:[2015-02-03 20:54:02.772180] I
[server.c:518:server_rpc_notify] 0-homegfs-server: disconnecting
connection from
gfs01b.corvidtec.com-4175-2015/02/02-16:44:31:179119-homegfs-client-2-0-1
You can 100% verify my theory if you can correlate the time on the
disconnects to the time that the missing files were healed. Can you have
a look at /var/log/glusterfs/glustershd.log? That has all of the healed
files + timestamps, if we can see a disconnect during the rsync and a
self
heal of the missing file I think we can safely assume that the
disconnects
may have caused this. I'll try this on my test systems, how much data
did
you rsync? What size ish of files / an idea of the dir layout?
@Pranith - Could bricks flapping up and down during the rsync cause the
files to be missing on the first ls(written to 1 subvol but not the other
cause it was down), the ls triggered SH, and thats why the files were
there for the second ls be a possible cause here?
-b
Pranith
Pranith
On 02/05/2015 03:44 PM, Xavier Hernandez wrote:
Is the failure repeatable ? with the same directories ?
It's very weird that the directories appear on the volume when you do
an 'ls' on the bricks. Could it be that you only made a single 'ls'
on fuse mount which not showed the directory ? Is it possible that
this 'ls' triggered a self-heal that repaired the problem, whatever
it was, and when you did another 'ls' on the fuse mount after the
'ls' on the bricks, the directories were there ?
The first 'ls' could have healed the files, causing that the
following 'ls' on the bricks showed the files as if nothing were
damaged. If that's the case, it's possible that there were some
disconnections during the copy.
Added Pranith because he knows better replication and self-heal
details.
Xavi
On 02/04/2015 07:23 PM, David F. Robinson wrote:
Distributed/replicated
Volume Name: homegfs
Type: Distributed-Replicate
Volume ID: 1e32672a-f1b7-4b58-ba94-58c085e59071
Status: Started
Number of Bricks: 4 x 2 = 8
Transport-type: tcp
Bricks:
Brick1: gfsib01a.corvidtec.com:/data/brick01a/homegfs
Brick2: gfsib01b.corvidtec.com:/data/brick01b/homegfs
Brick3: gfsib01a.corvidtec.com:/data/brick02a/homegfs
Brick4: gfsib01b.corvidtec.com:/data/brick02b/homegfs
Brick5: gfsib02a.corvidtec.com:/data/brick01a/homegfs
Brick6: gfsib02b.corvidtec.com:/data/brick01b/homegfs
Brick7: gfsib02a.corvidtec.com:/data/brick02a/homegfs
Brick8: gfsib02b.corvidtec.com:/data/brick02b/homegfs
Options Reconfigured:
performance.io-thread-count: 32
performance.cache-size: 128MB
performance.write-behind-window-size: 128MB
server.allow-insecure: on
network.ping-timeout: 10
storage.owner-gid: 100
geo-replication.indexing: off
geo-replication.ignore-pid-check: on
changelog.changelog: on
changelog.fsync-interval: 3
changelog.rollover-time: 15
server.manage-gids: on
------ Original Message ------
From: "Xavier Hernandez" <xhernandez@xxxxxxxxxx>
To: "David F. Robinson" <david.robinson@xxxxxxxxxxxxx>; "Benjamin
Turner" <bennyturns@xxxxxxxxx>
Cc: "gluster-users@xxxxxxxxxxx" <gluster-users@xxxxxxxxxxx>; "Gluster
Devel" <gluster-devel@xxxxxxxxxxx>
Sent: 2/4/2015 6:03:45 AM
Subject: Re: missing files
On 02/04/2015 01:30 AM, David F. Robinson wrote:
Sorry. Thought about this a little more. I should have been
clearer.
The files were on both bricks of the replica, not just one side.
So,
both bricks had to have been up... The files/directories just
don't show
up on the mount.
I was reading and saw a related bug
(https://bugzilla.redhat.com/show_bug.cgi?id=1159484). I saw it
suggested to run:
find <mount> -d -exec getfattr -h -n trusted.ec.heal {} \;
This command is specific for a dispersed volume. It won't do
anything
(aside from the error you are seeing) on a replicated volume.
I think you are using a replicated volume, right ?
In this case I'm not sure what can be happening. Is your volume a
pure
replicated one or a distributed-replicated ? on a pure replicated it
doesn't make sense that some entries do not show in an 'ls' when the
file is in both replicas (at least without any error message in the
logs). On a distributed-replicated it could be caused by some
problem
while combining contents of each replica set.
What's the configuration of your volume ?
Xavi
I get a bunch of errors for operation not supported:
[root@gfs02a homegfs]# find wks_backup -d -exec getfattr -h -n
trusted.ec.heal {} \;
find: warning: the -d option is deprecated; please use -depth
instead,
because the latter is a POSIX-compliant feature.
wks_backup/homer_backup/backup: trusted.ec.heal: Operation not
supported
wks_backup/homer_backup/logs/2014_05_20.log: trusted.ec.heal:
Operation
not supported
wks_backup/homer_backup/logs/2014_05_21.log: trusted.ec.heal:
Operation
not supported
wks_backup/homer_backup/logs/2014_05_18.log: trusted.ec.heal:
Operation
not supported
wks_backup/homer_backup/logs/2014_05_19.log: trusted.ec.heal:
Operation
not supported
wks_backup/homer_backup/logs/2014_05_22.log: trusted.ec.heal:
Operation
not supported
wks_backup/homer_backup/logs: trusted.ec.heal: Operation not
supported
wks_backup/homer_backup: trusted.ec.heal: Operation not supported
------ Original Message ------
From: "Benjamin Turner" <bennyturns@xxxxxxxxx
<mailto:bennyturns@xxxxxxxxx>>
To: "David F. Robinson" <david.robinson@xxxxxxxxxxxxx
<mailto:david.robinson@xxxxxxxxxxxxx>>
Cc: "Gluster Devel" <gluster-devel@xxxxxxxxxxx
<mailto:gluster-devel@xxxxxxxxxxx>>; "gluster-users@xxxxxxxxxxx"
<gluster-users@xxxxxxxxxxx <mailto:gluster-users@xxxxxxxxxxx>>
Sent: 2/3/2015 7:12:34 PM
Subject: Re: missing files
It sounds to me like the files were only copied to one replica,
werent
there for the initial for the initial ls which triggered a self
heal,
and were there for the last ls because they were healed. Is there
any
chance that one of the replicas was down during the rsync? It
could
be that you lost a brick during copy or something like that. To
confirm I would look for disconnects in the brick logs as well as
checking glusterfshd.log to verify the missing files were actually
healed.
-b
On Tue, Feb 3, 2015 at 5:37 PM, David F. Robinson
<david.robinson@xxxxxxxxxxxxx
<mailto:david.robinson@xxxxxxxxxxxxx>>
wrote:
I rsync'd 20-TB over to my gluster system and noticed that I
had
some directories missing even though the rsync completed
normally.
The rsync logs showed that the missing files were transferred.
I went to the bricks and did an 'ls -al
/data/brick*/homegfs/dir/*' the files were on the bricks.
After I
did this 'ls', the files then showed up on the FUSE mounts.
1) Why are the files hidden on the fuse mount?
2) Why does the ls make them show up on the FUSE mount?
3) How can I prevent this from happening again?
Note, I also mounted the gluster volume using NFS and saw the
same
behavior. The files/directories were not shown until I did the
"ls" on the bricks.
David
===============================
David F. Robinson, Ph.D.
President - Corvid Technologies
704.799.6944 x101 <tel:704.799.6944%20x101> [office]
704.252.1310 <tel:704.252.1310> [cell]
704.799.7974 <tel:704.799.7974> [fax]
David.Robinson@xxxxxxxxxxxxx
<mailto:David.Robinson@xxxxxxxxxxxxx>
http://www.corvidtechnologies.com
<http://www.corvidtechnologies.com/>
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