[Gluster-users] Cannot see all data in mount
Paul van der Vlis
paul at vandervlis.nl
Thu May 16 08:47:46 UTC 2019
Op 16-05-19 om 05:43 schreef Nithya Balachandran:
>
>
> On Thu, 16 May 2019 at 03:05, Paul van der Vlis <paul at vandervlis.nl
> <mailto:paul at vandervlis.nl>> wrote:
>
> Op 15-05-19 om 15:45 schreef Nithya Balachandran:
> > Hi Paul,
> >
> > A few questions:
> > Which version of gluster are you using?
>
> On the server and some clients: glusterfs 4.1.2
> On a new client: glusterfs 5.5
>
> Is the same behaviour seen on both client versions?
Yes.
> > Did this behaviour start recently? As in were the contents of that
> > directory visible earlier?
>
> This directory was normally used in the headoffice, and there is direct
> access to the files without Glusterfs. So I don't know.
>
>
> Do you mean that they access the files on the gluster volume without
> using the client or that these files were stored elsewhere
> earlier (not on gluster)? Files on a gluster volume should never be
> accessed directly.
The central server (this is the only gluster-brick) is a thin-client
server, people are working directly on the server using LTSP terminals:
http://ltsp.org/).
The data is exported using Gluster to some other machines in smaller
offices.
And to a new thin-client server what I am making (using X2go). The goal
is that this server will replace all of the excisting machines in the
future. X2go is something like "Citrix for Linux", you can use it over
the internet.
I did not setup Gluster and I have never met the old sysadmin. I guess
it's also very strange to use Gluster with only one brick. So when I
understand you right, the whole setup is wrong, and you may not access
the files without client?
> To debug this further, please send the following:
>
> 1. The directory contents when the listing is performed directly on the
> brick.
> 2. The tcpdump of the gluster client when listing the directory using
> the following command:
>
> tcpdump -i any -s 0 -w /var/tmp/dirls.pcap tcp and not port 22
>
>
> You can send these directly to me in case you want to keep the
> information private.
I have just heard (during writing this message) that the owner of the
firm where I make this for, is in hospital in very critical condition.
They've asked me to stop with the work at the moment.
I did also hear that there where more problems with the filesystem.
Especially when a directory was renamed.
And this directory was renamed in the past.
With regards,
Paul van der Vlis
> Regards,
> Nithya
>
>
>
> With regards,
> Paul van der Vlis
>
> > Regards,
> > Nithya
> >
> >
> > On Wed, 15 May 2019 at 18:55, Paul van der Vlis
> <paul at vandervlis.nl <mailto:paul at vandervlis.nl>
> > <mailto:paul at vandervlis.nl <mailto:paul at vandervlis.nl>>> wrote:
> >
> > Hello Strahil,
> >
> > Thanks for your answer. I don't find the word "sharding" in the
> > configfiles. There is not much shared data (24GB), and only 1
> brick:
> > ---
> > root at xxx:/etc/glusterfs# gluster volume info DATA
> >
> > Volume Name: DATA
> > Type: Distribute
> > Volume ID: db53ece1-5def-4f7c-b59d-3a230824032a
> > Status: Started
> > Snapshot Count: 0
> > Number of Bricks: 1
> > Transport-type: tcp
> > Bricks:
> > Brick1: xxx-vpn:/DATA
> > Options Reconfigured:
> > transport.address-family: inet
> > nfs.disable: on
> > ----
> > (I have edited this a bit for privacy of my customer).
> >
> > I think they have used glusterfs because it can do ACLs.
> >
> > With regards,
> > Paul van der Vlis
> >
> >
> > Op 15-05-19 om 14:59 schreef Strahil Nikolov:
> > > Most probably you use sharding , which splits the files into
> smaller
> > > chunks so you can fit a 1TB file into gluster nodes with
> bricks of
> > > smaller size.
> > > So if you have 2 dispersed servers each having 500Gb
> brick-> without
> > > sharding you won't be able to store files larger than the
> brick size -
> > > no matter you have free space on the other server.
> > >
> > > When sharding is enabled - you will see on the brick the first
> > shard as
> > > a file and the rest is in a hidden folder called ".shards" (or
> > something
> > > like that).
> > >
> > > The benefit is also viewable when you need to do some
> maintenance on a
> > > gluster node, as you will need to heal only the shards
> containing
> > > modified by the customers' data.
> > >
> > > Best Regards,
> > > Strahil Nikolov
> > >
> > >
> > > В сряда, 15 май 2019 г., 7:31:39 ч. Гринуич-4, Paul van der Vlis
> > > <paul at vandervlis.nl <mailto:paul at vandervlis.nl>
> <mailto:paul at vandervlis.nl <mailto:paul at vandervlis.nl>>> написа:
> > >
> > >
> > > Hello,
> > >
> > > I am the new sysadmin of an organization what uses Glusterfs.
> > > I did not set it up, and I don't know much about Glusterfs.
> > >
> > > What I do not understand is that I do not see all data in
> the mount.
> > > Not as root, not as a normal user who has privileges.
> > >
> > > When I do "ls" in one of the subdirectories I don't see any
> data, but
> > > this data exists at the server!
> > >
> > > In another subdirectory I see everything fine, the rights of the
> > > directories and files inside are the same.
> > >
> > > I mount with something like:
> > > /bin/mount -t glusterfs -o acl 10.8.0.1:/data /data
> > > I see data in /data/VOORBEELD/, and I don't see any data in
> > /data/ALGEMEEN/.
> > >
> > > I don't see something special in /etc/exports or in
> /etc/glusterfs on
> > > the server.
> > >
> > > Is there maybe a mechanism in Glusterfs what can exclude
> data from
> > > export? Or is there a way to debug this problem?
> > >
> > > With regards,
> > > Paul van der Vlis
> > >
> > > ----
> > > # file: VOORBEELD
> > > # owner: root
> > > # group: secretariaat
> > > # flags: -s-
> > > user::rwx
> > > group::rwx
> > > group:medewerkers:r-x
> > > mask::rwx
> > > other::---
> > > default:user::rwx
> > > default:group::rwx
> > > default:group:medewerkers:r-x
> > > default:mask::rwx
> > > default:other::---
> > >
> > > # file: ALGEMEEN
> > > # owner: root
> > > # group: secretariaat
> > > # flags: -s-
> > > user::rwx
> > > group::rwx
> > > group:medewerkers:r-x
> > > mask::rwx
> > > other::---
> > > default:user::rwx
> > > default:group::rwx
> > > default:group:medewerkers:r-x
> > > default:mask::rwx
> > > default:other::---
> > > ------
> > >
> > >
> > >
> > >
> > >
> > > --
> > > Paul van der Vlis Linux systeembeheer Groningen
> > > https://www.vandervlis.nl/
> > > _______________________________________________
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> > > Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>
> <mailto:Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>>
> > <mailto:Gluster-users at gluster.org
> <mailto:Gluster-users at gluster.org> <mailto:Gluster-users at gluster.org
> <mailto:Gluster-users at gluster.org>>>
> > > https://lists.gluster.org/mailman/listinfo/gluster-users
> >
> >
> >
> > --
> > Paul van der Vlis Linux systeembeheer Groningen
> > https://www.vandervlis.nl/
> > _______________________________________________
> > Gluster-users mailing list
> > Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>
> <mailto:Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>>
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> >
>
>
>
> --
> Paul van der Vlis Linux systeembeheer Groningen
> https://www.vandervlis.nl/
>
--
Paul van der Vlis Linux systeembeheer Groningen
https://www.vandervlis.nl/
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