[Gluster-users] glusterfs missing files on ls
Xavier Hernandez
xhernandez at datalab.es
Fri May 31 09:03:05 UTC 2013
Hi Stefano,
I added some comments inline...
Al 31/05/13 10:23, En/na Stefano Sinigardi ha escrit:
> Dear Xavi,
> thank you so much. The volname is "data"
> # gluster volume info data
> Volume Name: data
> Type: Distributed-Replicate
> Volume ID: e3a99db0-8643-41c1-b4a1-6a728bb1d08c
> Status: Started
> Number of Bricks: 5 x 2 = 10
> Transport-type: tcp
> Bricks:
> Brick1: pedrillo.bo.infn.it:/storage/1/data
> Brick2: pedrillo.bo.infn.it:/storage/2/data
> Brick3: pedrillo.bo.infn.it:/storage/5/data
> Brick4: pedrillo.bo.infn.it:/storage/6/data
> Brick5: pedrillo.bo.infn.it:/storage/arc1/data
> Brick6: pedrillo.bo.infn.it:/storage/arc2/data
> Brick7: osmino:/storageOsmino/1/data
> Brick8: osmino:/storageOsmino/2/data
> Brick9: osmino:/storageOsmino/4/data
> Brick10: osmino:/storageOsmino/5/data
This is not a recommended setup. You have paired bricks of the same
server to create the replica sets. This means that if one server fails
for some reason, both members of a replica set will fail and its data
will be inaccessible. With this configuration, each server is a single
point of failure.
Anyway this shouldn't cause the problem with the missing files...
> # gluster volume status data
> Status of volume: data
> Gluster process Port Online Pid
> ------------------------------------------------------------------------------
> Brick pedrillo.bo.infn.it:/storage/1/data 24009 Y 1732
> Brick pedrillo.bo.infn.it:/storage/2/data 24010 Y 1738
> Brick pedrillo.bo.infn.it:/storage/5/data 24013 Y 1747
> Brick pedrillo.bo.infn.it:/storage/6/data 24014 Y 1758
> Brick pedrillo.bo.infn.it:/storage/arc1/data 24015 Y 1770
> Brick pedrillo.bo.infn.it:/storage/arc2/data 24016 Y 1838
> Brick osmino:/storageOsmino/1/data 24009 Y 1173
> Brick osmino:/storageOsmino/2/data 24010 Y 1179
> Brick osmino:/storageOsmino/4/data 24011 Y 1185
> Brick osmino:/storageOsmino/5/data 24012 Y 1191
> NFS Server on localhost 38467 Y 1847
> Self-heal Daemon on localhost N/A Y
> 1855
> NFS Server on castor.bo.infn.it <http://castor.bo.infn.it>
> 38467 Y 1582
> Self-heal Daemon on castor.bo.infn.it <http://castor.bo.infn.it>
> N/A Y 1588
> NFS Server on pollux.bo.infn.it <http://pollux.bo.infn.it>
> 38467 Y 1583
> Self-heal Daemon on pollux.bo.infn.it <http://pollux.bo.infn.it>
> N/A Y 1589
> NFS Server on osmino 38467 Y 1197
> Self-heal Daemon on osmino N/A Y
> 1203
All seems ok
> Then I decided to select a file, as you said. It's an executable,
> "leggi_particelle", that should be located at
> /data/stefano/leggi_particelle/leggi_particelle
> It's not there:
> # ll /data/stefano/leggi_particelle
> total 61
> drwxr-xr-x 3 stefano user 20480 May 29 05:00 ./
> drwxr-xr-x 14 stefano user 20480 May 28 11:32 ../
> -rwxr-xr-x 1 stefano user 286 Feb 25 17:24 Espec.plt*
> lrwxrwxrwx 1 stefano user 53 Feb 13 11:30 parametri.cpp
> drwxr-xr-x 3 stefano user 20480 May 24 17:16 test/
> but look at this:
> # ll /storage/5/data/stefano/leggi_particelle/
> total 892
> drwxr-xr-x 3 stefano user 4096 May 24 17:16 ./
> drwxr-xr-x 14 stefano user 4096 May 28 11:32 ../
> lrwxrwxrwx 2 stefano user 50 Apr 11 19:20 filtro.cpp
> lrwxrwxrwx 2 stefano user 70 Apr 11 19:20
> leggi_binario_ALaDyn_fortran.h
> -rwxr-xr-x 2 stefano user 705045 May 22 18:24 leggi_particelle*
> -rwxr-xr-x 2 stefano user 61883 Dec 16 17:20 leggi_particelle.old01*
> -rwxr-xr-x 2 stefano user 106014 Apr 11 19:20 leggi_particelle.old03*
> ---------T 2 root root 0 May 24 17:16 parametri.cpp
> drwxr-xr-x 3 stefano user 4096 Apr 11 19:19 test/
> # ll /storage/6/data/stefano/leggi_particelle/
> total 892
> drwxr-xr-x 3 stefano user 4096 May 24 17:16 ./
> drwxr-xr-x 14 stefano user 4096 May 28 11:32 ../
> lrwxrwxrwx 2 stefano user 50 Apr 11 19:20 filtro.cpp
> lrwxrwxrwx 2 stefano user 70 Apr 11 19:20
> leggi_binario_ALaDyn_fortran.h
> -rwxr-xr-x 2 stefano user 705045 May 22 18:24 leggi_particelle*
> -rwxr-xr-x 2 stefano user 61883 Dec 16 17:20 leggi_particelle.old01*
> -rwxr-xr-x 2 stefano user 106014 Apr 11 19:20 leggi_particelle.old03*
> ---------T 2 root root 0 May 24 17:16 parametri.cpp
> drwxr-xr-x 3 stefano user 4096 Apr 11 19:19 test/
It seems there are much more files that are not visible through the
mount point. There is also a file with attributes "----------T" that
means that this file should be in another brick (it is a pending
rebalance link), however I think this is not true (see later).
> So as you can see, "leggi_particelle" is there, in the fifth and sixth
> brick (some files of the folder are in other bricks, ls on the fuse
> mount point just lists the one on the first brick). It's the same
> executable, working in both location.
> Most of all, what I found is that calling
> /data/stefano/leggi_particelle/leggi_particelle correctly launches the
> executable!! So ls doesn't find it but the os does!
> Is it just a very bad "bug" in ls??? I don't think so, because even
> remote mounting the volume with nfs hides the same files.
It's a problem with gluster not being able to correctly identify the
file during an 'ls', so it does not appear. This generally means some
discrepancy in the information that gluster collects from all bricks.
It's interesting that you say that all files shown in an 'ls' come from
the first brick...
> Anyway, back with what you asked:
> this is the tail of data.log
> [2013-05-31 10:00:02.236397] W
> [rpc-transport.c:174:rpc_transport_load] 0-rpc-transport: missing
> 'option transport-type'. defaulting to "socket"
> [2013-05-31 10:00:02.283271] I
> [cli-rpc-ops.c:504:gf_cli3_1_get_volume_cbk] 0-cli: Received resp to
> get vol: 0
> [2013-05-31 10:00:02.283465] I
> [cli-rpc-ops.c:757:gf_cli3_1_get_volume_cbk] 0-cli: Returning: 0
> [2013-05-31 10:00:02.283613] I
> [cli-rpc-ops.c:504:gf_cli3_1_get_volume_cbk] 0-cli: Received resp to
> get vol: 0
> [2013-05-31 10:00:02.283816] I
> [cli-rpc-ops.c:757:gf_cli3_1_get_volume_cbk] 0-cli: Returning: 0
> [2013-05-31 10:00:02.283919] I
> [cli-rpc-ops.c:504:gf_cli3_1_get_volume_cbk] 0-cli: Received resp to
> get vol: 0
> [2013-05-31 10:00:02.283943] I
> [cli-rpc-ops.c:757:gf_cli3_1_get_volume_cbk] 0-cli: Returning: 0
> [2013-05-31 10:00:02.283951] I [input.c:46:cli_batch] 0-: Exiting with: 0
> [2013-05-31 10:00:07.279855] W
> [rpc-transport.c:174:rpc_transport_load] 0-rpc-transport: missing
> 'option transport-type'. defaulting to "socket"
> [2013-05-31 10:00:07.326202] I
> [cli-rpc-ops.c:504:gf_cli3_1_get_volume_cbk] 0-cli: Received resp to
> get vol: 0
> [2013-05-31 10:00:07.326484] I
> [cli-rpc-ops.c:757:gf_cli3_1_get_volume_cbk] 0-cli: Returning: 0
> [2013-05-31 10:00:07.326493] I [input.c:46:cli_batch] 0-: Exiting with: 0
> [2013-05-31 10:01:29.718428] W
> [rpc-transport.c:174:rpc_transport_load] 0-rpc-transport: missing
> 'option transport-type'. defaulting to "socket"
> [2013-05-31 10:01:29.767990] I [input.c:46:cli_batch] 0-: Exiting with: 0
> but calling for many ls or ll didn't touch it
> and this is the tail of storage-5-data.log and storage-6-data.log
> (they're almost the same)
> [2013-05-31 07:59:19.090790] I
> [server-handshake.c:571:server_setvolume] 0-data-server: accepted
> client from pedrillo-2510-2013/05/31-07:59:15:067773-data-client-3-0
> (version: 3.3.1)
> [2013-05-31 08:00:56.935205] I
> [server-handshake.c:571:server_setvolume] 0-data-server: accepted
> client from pollux-2361-2013/05/31-08:00:52:937577-data-client-3-0
> (version: 3.3.1)
> [2013-05-31 08:01:03.611506] I
> [server-handshake.c:571:server_setvolume] 0-data-server: accepted
> client from castor-2629-2013/05/31-08:00:59:614003-data-client-3-0
> (version: 3.3.1)
> [2013-05-31 08:02:15.940950] I
> [server-handshake.c:571:server_setvolume] 0-data-server: accepted
> client from osmino-1844-2013/05/31-08:02:11:932993-data-client-3-0
> (version: 3.3.1)
> Except for the warning in the data.log, they seem legit.
Nothing interesting here. Have you looked at the bricks logs ? is there
anything ?
> Here are the attributes:
> # getfattr -m. -e hex -d
> /storage/5/data/stefano/leggi_particelle/leggi_particelle
> getfattr: Removing leading '/' from absolute path names
> # file: storage/5/data/stefano/leggi_particelle/leggi_particelle
> trusted.afr.data-client-2=0x000000000000000000000000
> trusted.afr.data-client-3=0x000000000000000000000000
> trusted.gfid=0x883c343b9366478da660843da8f6b87c
> # getfattr -m. -e hex -d
> /storage/6/data/stefano/leggi_particelle/leggi_particelle
> getfattr: Removing leading '/' from absolute path names
> # file: storage/6/data/stefano/leggi_particelle/leggi_particelle
> trusted.afr.data-client-2=0x000000000000000000000000
> trusted.afr.data-client-3=0x000000000000000000000000
> trusted.gfid=0x883c343b9366478da660843da8f6b87c
> # getfattr -m. -e hex -d /storage/5/data/stefano/leggi_particelle
> getfattr: Removing leading '/' from absolute path names
> # file: storage/5/data/stefano/leggi_particelle
> trusted.afr.data-client-2=0x000000000000000000000000
> trusted.afr.data-client-3=0x000000000000000000000000
> trusted.gfid=0xb62a16f0bdb94e3f8563ccfb278c2105
> trusted.glusterfs.dht=0x00000001000000003333333366666665
> # getfattr -m. -e hex -d /storage/6/data/stefano/leggi_particelle
> getfattr: Removing leading '/' from absolute path names
> # file: storage/6/data/stefano/leggi_particelle
> trusted.afr.data-client-2=0x000000000000000000000000
> trusted.afr.data-client-3=0x000000000000000000000000
> trusted.gfid=0xb62a16f0bdb94e3f8563ccfb278c2105
> trusted.glusterfs.dht=0x00000001000000003333333366666665
Based on this attributes, the file 'leggi_particelle' should not be on
these bricks. Are you sure the file is not on any other brick ? (even
with other attributes). Also the file 'parametri.cpp' should be in these
bricks, but there is only a link file (the one with '----------T'). The
other files also do not seem to be placed in the right place.
I think there is a problem with the layout of the volume. I need to see
the attributes from this directory on all other bricks. Also, how was
this volume created ? with a single replica and then growing with more
replicas and doing rebalances ?
Best regards,
Xavi
> Sorry for the very long email. But your help is very much appreciated
> and I hope I'm clear enough.
> Best regards,
> Stefano
>
>
> On Fri, May 31, 2013 at 4:34 PM, Xavier Hernandez
> <xhernandez at datalab.es <mailto:xhernandez at datalab.es>> wrote:
>
> Hi Stefano,
>
> it would help to see the results of the following commands:
>
> gluster volume info <volname>
> gluster volume status <volname>
>
> It would also be interesting to see fragments of the logs
> containing Warnings or Errors generated while the 'ls' command was
> executing (if any). The logs from the mount point are normally
> located at /var/log/glusterfs/<mount point>.log. Logs from the
> bricks are at /var/log/glusterfs/bricks/<brick name>.log.
>
> Also, identify a file (I'll call it <file>, and its parent
> directory <parent>) that does not appear in an 'ls' from the mount
> point. Then execute the following command on all bricks:
>
> getfattr -m. -e hex -d <brick root>/<parent>
>
> On all bricks that contain the file, execute the following command:
>
> getfattr -m. -e hex -d <brick root>/<parent>/<file>
>
> This information might help to see what is happening.
>
> Best regards,
>
> Xavi
>
> Al 31/05/13 08:53, En/na Stefano Sinigardi ha escrit:
>
> Dear all,
> Thanks again for your support.
> Files are already and exactly duplicated (diff confirms it) on the
> bricks, so I'd like not to mess with them directly (in order
> to not do
> anything worse to the volume than what it's already suffering).
> I found out, thanks to your help, that in order to trigger the
> self-healing there's no more the request of doing a find on
> all the
> files, but that there's the
>
> gluster volume heal VOLNAME full
>
> command to run. So I did a it and it said "Launching Heal
> operation on
> volume data has been successful. Use heal info commands to check
> status". But then asking for
>
> gluster volume heal VOLNAME info
>
> it reported each and every entry at zero, like "gluster volume
> heal
> VOLNAME info heal-failed" and "gluster volume heal VOLNAME info
> split-brain". It should be a positive news, or no?
> If I requested a "gluster volume heal VOLNAME info healed", on the
> other hand, revealed 1023 files per couple of bricks that got
> healed
> (very strange that the number is always the same. Is it an upper
> bound?). For sure all of them are missing from the volume
> itself (not
> sure if just 1023 per couple are missing from the total, maybe
> more).
> I thought that now at least those should have become visible,
> but in
> fact those are not. How to check logs for this healing
> process? Doing
> a "ls -ltr /var/log/glusterfs/" says that no logs are being
> touched,
> and even looking at the most recent ones reveals that just healing
> command launch is reported into them.
> I rebooted the nodes but still nothing changed, files are still
> missing from the FUSE mount point but not from bricks. I
> relaunched
> the healing and again, 1023 files per couple of bricks got
> self-healed. But still, I think that they are the same as
> before and
> those are still missing from the fuse mount point (just tried
> a few
> reported by the gluster volume heal VOLNAME info healed).
>
> Do you have any other suggestion? Things are looking very bad
> for me
> now because of the time that I'm forcing others to loose (as I
> said,
> we don't have any system administrator and I do it just "for
> fun", but
> still people look at you as the main responsible)...
>
> Best regards,
>
> Stefano
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>
> http://supercolony.gluster.org/mailman/listinfo/gluster-users
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://supercolony.gluster.org/pipermail/gluster-users/attachments/20130531/6654a306/attachment.html>
More information about the Gluster-users
mailing list