I should mention that the problem is not currently occurring and there are no heals (output appended). By restarting the gluster services, we can stop the crawl, which lowers the load for a while. Subsequent crawls seem to finish properly. For what it's worth, files/folders that show up in the 'volume info' output during a hung crawl don't seem to be anything out of the ordinary.
Over the past four days, the typical time before the problem recurs after suppressing it in this manner is an hour. Last night when we reached out to you was the last time it happened and the load has been low since (a relief). David believes that recursively listing the files (ls -alR or similar) from a client mount can force the issue to happen, but obviously I'd rather not unless we have some precise thing we're looking for. Let me know if you'd like me to attempt to drive the system unstable like that and what I should look for. As it's a production system, I'd rather not leave it in this state for long.
Over the past four days, the typical time before the problem recurs after suppressing it in this manner is an hour. Last night when we reached out to you was the last time it happened and the load has been low since (a relief). David believes that recursively listing the files (ls -alR or similar) from a client mount can force the issue to happen, but obviously I'd rather not unless we have some precise thing we're looking for. Let me know if you'd like me to attempt to drive the system unstable like that and what I should look for. As it's a production system, I'd rather not leave it in this state for long.
[root@gfs01a xattrop]# gluster volume heal homegfs info
Brick gfs01a.corvidtec.com:/data/brick01a/homegfs/
Number of entries: 0
Brick gfs01b.corvidtec.com:/data/brick01b/homegfs/
Number of entries: 0
Brick gfs01a.corvidtec.com:/data/brick02a/homegfs/
Number of entries: 0
Brick gfs01b.corvidtec.com:/data/brick02b/homegfs/
Number of entries: 0
Brick gfs02a.corvidtec.com:/data/brick01a/homegfs/
Number of entries: 0
Brick gfs02b.corvidtec.com:/data/brick01b/homegfs/
Number of entries: 0
Brick gfs02a.corvidtec.com:/data/brick02a/homegfs/
Number of entries: 0
Brick gfs02b.corvidtec.com:/data/brick02b/homegfs/
Number of entries: 0
Brick gfs01a.corvidtec.com:/data/brick01a/homegfs/
Number of entries: 0
Brick gfs01b.corvidtec.com:/data/brick01b/homegfs/
Number of entries: 0
Brick gfs01a.corvidtec.com:/data/brick02a/homegfs/
Number of entries: 0
Brick gfs01b.corvidtec.com:/data/brick02b/homegfs/
Number of entries: 0
Brick gfs02a.corvidtec.com:/data/brick01a/homegfs/
Number of entries: 0
Brick gfs02b.corvidtec.com:/data/brick01b/homegfs/
Number of entries: 0
Brick gfs02a.corvidtec.com:/data/brick02a/homegfs/
Number of entries: 0
Brick gfs02b.corvidtec.com:/data/brick02b/homegfs/
Number of entries: 0
On Thu, Jan 21, 2016 at 10:40 AM, Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx> wrote:
On 01/21/2016 08:25 PM, Glomski, Patrick wrote:
Hello, Pranith. The typical behavior is that the %cpu on a glusterfsd process jumps to number of processor cores available (800% or 1200%, depending on the pair of nodes involved) and the load average on the machine goes very high (~20). The volume's heal statistics output shows that it is crawling one of the bricks and trying to heal, but this crawl hangs and never seems to finish.
Thanks this info is helpful. I don't see a lot of files. Could you give output of "gluster volume heal <volname> info"? Is there any directory in there which is LARGE?The number of files in the xattrop directory varies over time, so I ran a wc -l as you requested periodically for some time and then started including a datestamped list of the files that were in the xattrops directory on each brick to see which were persistent. All bricks had files in the xattrop folder, so all results are attached.
Pranith
Please let me know if there is anything else I can provide.
Patrick
On Thu, Jan 21, 2016 at 12:01 AM, Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx> wrote:
hey,
Which process is consuming so much cpu? I went through the logs you gave me. I see that the following files are in gfid mismatch state:
<066e4525-8f8b-43aa-b7a1-86bbcecc68b9/safebrowsing-backup>,
<1d48754b-b38c-403d-94e2-0f5c41d5f885/recovery.bak>,
<ddc92637-303a-4059-9c56-ab23b1bb6ae9/patch0008.cnvrg>,
Could you give me the output of "ls <brick-path>/indices/xattrop | wc -l" output on all the bricks which are acting this way? This will tell us the number of pending self-heals on the system.
Pranith
On 01/20/2016 09:26 PM, David Robinson wrote:
resending with parsed logs...I am having issues with 3.6.6 where the load will spike up to 800% for one of the glusterfsd processes and the users can no longer access the system. If I reboot the node, the heal will finish normally after a few minutes and the system will be responsive, but a few hours later the issue will start again. It look like it is hanging in a heal and spinning up the load on one of the bricks. The heal gets stuck and says it is crawling and never returns. After a few minutes of the heal saying it is crawling, the load spikes up and the mounts become unresponsive.Any suggestions on how to fix this? It has us stopped cold as the user can no longer access the systems when the load spikes... Logs attached.System setup info is:[root@gfs01a ~]# gluster volume info homegfs
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: 42
storage.owner-gid: 100
geo-replication.indexing: off
geo-replication.ignore-pid-check: on
changelog.changelog: off
changelog.fsync-interval: 3
changelog.rollover-time: 15
server.manage-gids: on
diagnostics.client-log-level: WARNING[root@gfs01a ~]# rpm -qa | grep gluster
gluster-nagios-common-0.1.1-0.el6.noarch
glusterfs-fuse-3.6.6-1.el6.x86_64
glusterfs-debuginfo-3.6.6-1.el6.x86_64
glusterfs-libs-3.6.6-1.el6.x86_64
glusterfs-geo-replication-3.6.6-1.el6.x86_64
glusterfs-api-3.6.6-1.el6.x86_64
glusterfs-devel-3.6.6-1.el6.x86_64
glusterfs-api-devel-3.6.6-1.el6.x86_64
glusterfs-3.6.6-1.el6.x86_64
glusterfs-cli-3.6.6-1.el6.x86_64
glusterfs-rdma-3.6.6-1.el6.x86_64
samba-vfs-glusterfs-4.1.11-2.el6.x86_64
glusterfs-server-3.6.6-1.el6.x86_64
glusterfs-extra-xlators-3.6.6-1.el6.x86_64
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