Yesterday I've reproduced this situation two times.
The setup:
1. Hardware and network
a. Disks INTEL SSDSC2BB240G4
b1. Network cards: X540-AT2
b2. Netgear 10g switch
2. Software setup:
a. OS: Debian wheezy
b. Glusterfs: 3.4.4 (latest 3.4.4 from gluster repository)
c. Promox VE with update glusterfs from gluster repository
3. Software Configuration
a. create replicated volume with cluster.self-heal-daemon: off; nfs.disable: off; network.ping-timeout: 2 opts
b. mount it on proxmox VE (via proxmox gui, it mouts with these opts: stor1:HA-fast-150G-PVE1 on /mnt/pve/FAST-TESt type fuse.glusterfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072) )
c. install VM with qcow2 or raw disk image.
d. disable port / remove network cable from one of storage servers
e. wait and put cable back
f. keep waiting for sync (pointless, it won't ever start)
g. disable another port for second server (or remove cable from second server)
h. profit.
Maybe I could use 3.5.2 from debian sid (testing) repository to test with?
2014-08-06 9:39 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
Roman,
The file went into split-brain. I think we should do these tests with 3.5.2. Where monitoring the heals is easier. Let me also come up with a document about how to do this testing you are trying to do.
Humble/Niels,
Do we have debs available for 3.5.2? In 3.5.1 there was packaging issue where /usr/bin/glfsheal is not packaged along with the deb. I think that should be fixed now as well?
Pranith
On 08/06/2014 11:52 AM, Roman wrote:
good morning,
root@stor1:~# getfattr -d -m. -e hex /exports/fast-test/150G/images/127/vm-127-disk-1.qcow2getfattr: Removing leading '/' from absolute path names# file: exports/fast-test/150G/images/127/vm-127-disk-1.qcow2trusted.afr.HA-fast-150G-PVE1-client-0=0x000000000000000000000000trusted.afr.HA-fast-150G-PVE1-client-1=0x000001320000000000000000trusted.gfid=0x23c79523075a4158bea38078da570449
getfattr: Removing leading '/' from absolute path names# file: exports/fast-test/150G/images/127/vm-127-disk-1.qcow2trusted.afr.HA-fast-150G-PVE1-client-0=0x000000040000000000000000trusted.afr.HA-fast-150G-PVE1-client-1=0x000000000000000000000000trusted.gfid=0x23c79523075a4158bea38078da570449
2014-08-06 9:20 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
What is the getfattr output?
On 08/06/2014 11:30 AM, Roman wrote:
Also, this time files are not the same!
root@stor1:~# md5sum /exports/fast-test/150G/images/127/vm-127-disk-1.qcow232411360c53116b96a059f17306caeda /exports/fast-test/150G/images/127/vm-127-disk-1.qcow2
root@stor2:~# md5sum /exports/fast-test/150G/images/127/vm-127-disk-1.qcow265b8a6031bcb6f5fb3a11cb1e8b1c9c9 /exports/fast-test/150G/images/127/vm-127-disk-1.qcow2
Pranith
2014-08-05 16:33 GMT+03:00 Roman <romeo.r@xxxxxxxxx>:
Nope, it is not working. But this time it went a bit other way
root@gluster-client:~# dmesgSegmentation fault
I was not able even to start the VM after I done the tests
Could not read qcow2 header: Operation not permitted
And it seems, it never starts to sync files after first disconnect. VM survives first disconnect, but not second (I waited around 30 minutes). Also, I've got network.ping-timeout: 2 in volume settings, but logs react on first disconnect around 30 seconds. Second was faster, 2 seconds.
Reaction was different also:
slower one:[2014-08-05 13:26:19.558435] W [socket.c:514:__socket_rwv] 0-glusterfs: readv failed (Connection timed out)[2014-08-05 13:26:19.558485] W [socket.c:1962:__socket_proto_state_machine] 0-glusterfs: reading from socket failed. Error (Connection timed out), peer (10.250.0.1:24007)[2014-08-05 13:26:21.281426] W [socket.c:514:__socket_rwv] 0-HA-fast-150G-PVE1-client-0: readv failed (Connection timed out)[2014-08-05 13:26:21.281474] W [socket.c:1962:__socket_proto_state_machine] 0-HA-fast-150G-PVE1-client-0: reading from socket failed. Error (Connection timed out), peer (10.250.0.1:49153)[2014-08-05 13:26:21.281507] I [client.c:2098:client_rpc_notify] 0-HA-fast-150G-PVE1-client-0: disconnected
the fast one:2014-08-05 12:52:44.607389] C [client-handshake.c:127:rpc_client_ping_timer_expired] 0-HA-fast-150G-PVE1-client-1: server 10.250.0.2:49153 has not responded in the last 2 seconds, disconnecting.[2014-08-05 12:52:44.607491] W [socket.c:514:__socket_rwv] 0-HA-fast-150G-PVE1-client-1: readv failed (No data available)[2014-08-05 12:52:44.607585] E [rpc-clnt.c:368:saved_frames_unwind] (-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_notify+0xf8) [0x7fcb1b4b0558] (-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_connection_cleanup+0xc3) [0x7fcb1b4aea63] (-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(saved_frames_destroy+0xe) [0x7fcb1b4ae97e]))) 0-HA-fast-150G-PVE1-client-1: forced unwinding frame type(GlusterFS 3.3) op(LOOKUP(27)) called at 2014-08-05 12:52:42.463881 (xid=0x381883x)[2014-08-05 12:52:44.607604] W [client-rpc-fops.c:2624:client3_3_lookup_cbk] 0-HA-fast-150G-PVE1-client-1: remote operation failed: Transport endpoint is not connected. Path: / (00000000-0000-0000-0000-000000000001)[2014-08-05 12:52:44.607736] E [rpc-clnt.c:368:saved_frames_unwind] (-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_notify+0xf8) [0x7fcb1b4b0558] (-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(rpc_clnt_connection_cleanup+0xc3) [0x7fcb1b4aea63] (-->/usr/lib/x86_64-linux-gnu/libgfrpc.so.0(saved_frames_destroy+0xe) [0x7fcb1b4ae97e]))) 0-HA-fast-150G-PVE1-client-1: forced unwinding frame type(GlusterFS Handshake) op(PING(3)) called at 2014-08-05 12:52:42.463891 (xid=0x381884x)[2014-08-05 12:52:44.607753] W [client-handshake.c:276:client_ping_cbk] 0-HA-fast-150G-PVE1-client-1: timer must have expired[2014-08-05 12:52:44.607776] I [client.c:2098:client_rpc_notify] 0-HA-fast-150G-PVE1-client-1: disconnected
I've got SSD disks (just for an info).Should I go and give a try for 3.5.2?
2014-08-05 13:06 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
reply along with gluster-users please :-). May be you are hitting 'reply' instead of 'reply all'?
Pranith
On 08/05/2014 03:35 PM, Roman wrote:
To make sure and clean, I've created another VM with raw format and goint to repeat those steps. So now I've got two VM-s one with qcow2 format and other with raw format. I will send another e-mail shortly.
2014-08-05 13:01 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
It is the rpc (over the network data structures) version, which is not changed at all from 3.3 so thats not a problem. So what is the conclusion? Is your test case working now or not?
On 08/05/2014 03:07 PM, Roman wrote:
really, seems like the same file
stor1:a951641c5230472929836f9fcede6b04 /exports/fast-test/150G/images/127/vm-127-disk-1.qcow2
stor2:a951641c5230472929836f9fcede6b04 /exports/fast-test/150G/images/127/vm-127-disk-1.qcow2
one thing I've seen from logs, that somehow proxmox VE is connecting with wrong version to servers?[2014-08-05 09:23:45.218550] I [client-handshake.c:1659:select_server_supported_programs] 0-HA-fast-150G-PVE1-client-0: Using Program GlusterFS 3.3, Num (1298437), Version (330)
Pranith
but if I issue:root@pve1:~# glusterfs -Vglusterfs 3.4.4 built on Jun 28 2014 03:44:57seems ok.
server use 3.4.4 meanwhile[2014-08-05 09:23:45.117875] I [server-handshake.c:567:server_setvolume] 0-HA-fast-150G-PVE1-server: accepted client from stor1-9004-2014/08/05-09:23:45:93538-HA-fast-150G-PVE1-client-1-0 (version: 3.4.4)
[2014-08-05 09:23:49.103035] I [server-handshake.c:567:server_setvolume] 0-HA-fast-150G-PVE1-server: accepted client from stor1-8998-2014/08/05-09:23:45:89883-HA-fast-150G-PVE1-client-0-0 (version: 3.4.4)
if this could be the reason, of course.I did restart the Proxmox VE yesterday (just for an information)
2014-08-05 12:30 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
According to the changelogs, the file doesn't need any healing. Could you stop the operations on the VMs and take md5sum on both these machines?
On 08/05/2014 02:33 PM, Roman wrote:
Waited long enough for now, still different sizes and no logs about healing :(
stor1# file: exports/fast-test/150G/images/127/vm-127-disk-1.qcow2trusted.afr.HA-fast-150G-PVE1-client-0=0x000000000000000000000000trusted.afr.HA-fast-150G-PVE1-client-1=0x000000000000000000000000trusted.gfid=0xf10ad81b58484bcd9b385a36a207f921
root@stor1:~# du -sh /exports/fast-test/150G/images/127/1.2G /exports/fast-test/150G/images/127/
stor2# file: exports/fast-test/150G/images/127/vm-127-disk-1.qcow2trusted.afr.HA-fast-150G-PVE1-client-0=0x000000000000000000000000trusted.afr.HA-fast-150G-PVE1-client-1=0x000000000000000000000000trusted.gfid=0xf10ad81b58484bcd9b385a36a207f921
root@stor2:~# du -sh /exports/fast-test/150G/images/127/1.4G /exports/fast-test/150G/images/127/
Pranith
2014-08-05 11:49 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
Yes, it should take around 10-15 minutes. Could you provide 'getfattr -d -m. -e hex <file-on-brick>' on both the bricks.
On 08/05/2014 02:06 PM, Roman wrote:
Well, it seems like it doesn't see the changes were made to the volume ? I created two files 200 and 100 MB (from /dev/zero) after I disconnected the first brick. Then connected it back and got these logs:
[2014-08-05 08:30:37.830150] I [glusterfsd-mgmt.c:1584:mgmt_getspec_cbk] 0-glusterfs: No change in volfile, continuing[2014-08-05 08:30:37.830207] I [rpc-clnt.c:1676:rpc_clnt_reconfig] 0-HA-fast-150G-PVE1-client-0: changing port to 49153 (from 0)[2014-08-05 08:30:37.830239] W [socket.c:514:__socket_rwv] 0-HA-fast-150G-PVE1-client-0: readv failed (No data available)[2014-08-05 08:30:37.831024] I [client-handshake.c:1659:select_server_supported_programs] 0-HA-fast-150G-PVE1-client-0: Using Program GlusterFS 3.3, Num (1298437), Version (330)[2014-08-05 08:30:37.831375] I [client-handshake.c:1456:client_setvolume_cbk] 0-HA-fast-150G-PVE1-client-0: Connected to 10.250.0.1:49153, attached to remote volume '/exports/fast-test/150G'.[2014-08-05 08:30:37.831394] I [client-handshake.c:1468:client_setvolume_cbk] 0-HA-fast-150G-PVE1-client-0: Server and Client lk-version numbers are not same, reopening the fds[2014-08-05 08:30:37.831566] I [client-handshake.c:450:client_set_lk_version_cbk] 0-HA-fast-150G-PVE1-client-0: Server lk version = 1
[2014-08-05 08:30:37.830150] I [glusterfsd-mgmt.c:1584:mgmt_getspec_cbk] 0-glusterfs: No change in volfile, continuing
this line seems weird to me tbh.I do not see any traffic on switch interfaces between gluster servers, which means, there is no syncing between them.I tried to ls -l the files on the client and servers to trigger the healing, but seems like no success. Should I wait more?
Pranith
2014-08-05 11:25 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
Seems like these are the messages where you took down the bricks before self-heal. Could you restart the run waiting for self-heals to complete before taking down the next brick?
On 08/05/2014 01:10 PM, Roman wrote:
Ahha! For some reason I was not able to start the VM anymore, Proxmox VE told me, that it is not able to read the qcow2 header due to permission is denied for some reason. So I just deleted that file and created a new VM. And the nex message I've got was this:
Pranith
[2014-08-05 07:31:25.663412] E [afr-self-heal-common.c:197:afr_sh_print_split_brain_log] 0-HA-fast-150G-PVE1-replicate-0: Unable to self-heal contents of '/images/124/vm-124-disk-1.qcow2' (possible split-brain). Please delete the file from all but the preferred subvolume.- Pending matrix: [ [ 0 60 ] [ 11 0 ] ][2014-08-05 07:31:25.663955] E [afr-self-heal-common.c:2262:afr_self_heal_completion_cbk] 0-HA-fast-150G-PVE1-replicate-0: background data self-heal failed on /images/124/vm-124-disk-1.qcow2
2014-08-05 10:13 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
I just responded to your earlier mail about how the log looks. The log comes on the mount's logfile
Pranith
On 08/05/2014 12:41 PM, Roman wrote:
Ok, so I've waited enough, I think. Had no any traffic on switch ports between servers. Could not find any suitable log message about completed self-heal (waited about 30 minutes). Plugged out the other server's UTP cable this time and got in the same situation:root@gluster-test1:~# cat /var/log/dmesg-bash: /bin/cat: Input/output error
brick logs:[2014-08-05 07:09:03.005474] I [server.c:762:server_rpc_notify] 0-HA-fast-150G-PVE1-server: disconnecting connectionfrom pve1-27649-2014/08/04-13:27:54:720789-HA-fast-150G-PVE1-client-0-0[2014-08-05 07:09:03.005530] I [server-helpers.c:729:server_connection_put] 0-HA-fast-150G-PVE1-server: Shutting down connection pve1-27649-2014/08/04-13:27:54:720789-HA-fast-150G-PVE1-client-0-0[2014-08-05 07:09:03.005560] I [server-helpers.c:463:do_fd_cleanup] 0-HA-fast-150G-PVE1-server: fd cleanup on /images/124/vm-124-disk-1.qcow2[2014-08-05 07:09:03.005797] I [server-helpers.c:617:server_connection_destroy] 0-HA-fast-150G-PVE1-server: destroyed connection of pve1-27649-2014/08/04-13:27:54:720789-HA-fast-150G-PVE1-client-0-0
2014-08-05 9:53 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
Do you think it is possible for you to do these tests on the latest version 3.5.2? 'gluster volume heal <volname> info' would give you that information in versions > 3.5.1.
Otherwise you will have to check it from either the logs, there will be self-heal completed message on the mount logs (or) by observing 'getfattr -d -m. -e hex <image-file-on-bricks>'
Pranith
On 08/05/2014 12:09 PM, Roman wrote:
Ok, I understand. I will try this shortly.How can I be sure, that healing process is done, if I am not able to see its status?
2014-08-05 9:30 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
Mounts will do the healing, not the self-heal-daemon. The problem I feel is that whichever process does the healing has the latest information about the good bricks in this usecase. Since for VM usecase, mounts should have the latest information, we should let the mounts do the healing. If the mount accesses the VM image either by someone doing operations inside the VM or explicit stat on the file it should do the healing.
Pranith.
On 08/05/2014 10:39 AM, Roman wrote:
Hmmm, you told me to turn it off. Did I understood something wrong? After I issued the command you've sent me, I was not able to watch the healing process, it said, it won't be healed, becouse its turned off.
2014-08-05 5:39 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
You didn't mention anything about self-healing. Did you wait until the self-heal is complete?
Pranith
On 08/04/2014 05:49 PM, Roman wrote:
Hi!Result is pretty same. I set the switch port down for 1st server, it was ok. Then set it up back and set other server's port off. and it triggered IO error on two virtual machines: one with local root FS but network mounted storage. and other with network root FS. 1st gave an error on copying to or from the mounted network disk, other just gave me an error for even reading log.files.
cat: /var/log/alternatives.log: Input/output error
then I reset the kvm VM and it said me, there is no boot device. Next I virtually powered it off and then back on and it has booted.
By the way, did I have to start/stop volume?
>> Could you do the following and test it again?>> gluster volume set <volname> cluster.self-heal-daemon off
>>Pranith
2014-08-04 14:10 GMT+03:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:
Could you do the following and test it again?
On 08/04/2014 03:33 PM, Roman wrote:
Hello!Facing the same problem as mentioned here:
my set up is up and running, so i'm ready to help you back with feedback.
setup:proxmox server as client2 gluster physical servers
server side and client side both running atm 3.4.4 glusterfs from gluster repo.
the problem is:
1. craeted replica bricks.2. mounted in proxmox (tried both promox ways: via GUI and fstab (with backup volume line), btw while mounting via fstab I'm unable to launch a VM without cache, meanwhile direct-io-mode is enabled in fstab line)3. installed VM4. bring one volume down - ok5. bringing up, waiting for sync is done.6. bring other volume down - getting IO errors on VM guest and not able to restore the VM after I reset the VM via host. It says (no bootable media). After I shut it down (forced) and bring back up, it boots.
gluster volume set <volname> cluster.self-heal-daemon off
Pranith
Need help. Tried 3.4.3, 3.4.4.Still missing pkg-s for 3.4.5 for debian and 3.5.2 (3.5.1 always gives a healing error for some reason)--
Best regards,
Roman.
_______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://supercolony.gluster.org/mailman/listinfo/gluster-users
--
Best regards,
Roman.
--
Best regards,
Roman.
--
Best regards,
Roman.
--
Best regards,
Roman.
--
Best regards,
Roman.
--
Best regards,
Roman.
--
Best regards,
Roman.
--
Best regards,
Roman.
--
Best regards,
Roman.
--
Best regards,
Roman.
--
Best regards,
Roman.
--
Best regards,
Roman.
Best regards,
Roman.
_______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://supercolony.gluster.org/mailman/listinfo/gluster-users
