[Gluster-users] Hundreds of duplicate files
Joe Julian
joe at julianfamily.org
Mon Dec 22 06:34:23 UTC 2014
Have you tried upgrading the older server so all are running the same
version? Even though it's supposed to work with mixed versions, the goal
should always be to have everything running the same version (clients
and servers).
On 12/20/2014 09:37 PM, tbenzvi at 3vgeomatics.com wrote:
> Hi Joe,
> Thanks for the reply. That worked; I probably forgot to do this as
> root last time. Yet, the files still show up twice in a directory
> listing on the mounted volume. And it seems to be random whether
> reading the file will succeed or not. I've tried with several files
> and it sometimes works and sometimes fails; I assume this depends on
> whether it locates the actual file on the brick or the link file. Let
> me know if you have any idea what's going on.
> Output of the command:
>
> $ getfattr -m . -d -e hex
> /data/glusterfs/safari/brick01/brick/rsc/tsx/montreal_smaller/sm_asc/stack/slc/20130210.slc.ras
> getfattr: Removing leading '/' from absolute path names
> # file:
> data/glusterfs/safari/brick01/brick/rsc/tsx/montreal_smaller/sm_asc/stack/slc/20130210.slc.ras
> system.posix_acl_access=0x0200000001000600ffffffff04000600ffffffff10000600ffffffff20000400ffffffff
> trusted.SGI_ACL_FILE=0x0000000400000001ffffffff0006000000000004ffffffff0006000000000010ffffffff0006000000000020ffffffff00040000
> trusted.gfid=0x52c2aed77d09412d8bfd7ca70e87b196
> trusted.glusterfs.dht.linkto=0x7361666172692d636c69656e742d3200
>
> Cheers,
> Tom
>
> --------- Original Message ---------
> Subject: Re: [Gluster-users] Hundreds of duplicate files
> From: "Joe Julian" <joe at julianfamily.org>
> Date: 12/20/14 8:53 pm
> To: gluster-users at gluster.org
>
> Try 'getfattr -m . -d -e hex' (dot instead of dash) and, of
> course, do that as root.
>
> On 12/20/2014 06:02 PM, tbenzvi at 3vgeomatics.com wrote:
>
> Hi everyone,
> We have a distributed Gluster volume on five bricks over two
> servers (first server running gluster 3.4.2, second server
> running gluster 3.5.1, both running Fedora 20)
> Starting last week, doing a file listing on the mounted volume
> shows many files with the same name appearing twice (and they
> are listed with the same inode). Doing a search for these
> files, I have found 290,000 of them!!
> If I do a listing of these files on the bricks themselves, it
> looks like most are link files (du will show the file on the
> first server as 0 bytes, and the sticky bit set). The file is
> fine on the second server. Unfortunately, running "getfattr -m
> - -e hex -d" on the file shows NO gluster-related attributes
> and I believe this is why both files appear in the listing.
> The files cannot be read by any programs as it is trying to
> read the link file. I assume the metadata became corrupted.
> This is a production server so we really need to know:
> 1. How did this happen, and how can we prevent it going
> forward? There was a server crash a week ago and I believe
> that was the cause.
> 2. How can we heal the Gluster volume/bricks and link files.
> If there is some straightforward way of restoring the link
> file pointer I can write a script to do it, obviously doing
> this manually will be impossible.
> Thanks very much for any and all help - much appreciated!
> Regards,
> Tom
> On Wed, Dec 17, 2014 at 4:07 AM, <tbenzvi at 3vgeomatics.com> wrote:
> > Hi everyone, we have noticed some extremely odd behaviour
> with our
> > distributed Gluster volume where duplicate files (same name,
> same or
> > different content) are being created and stored on multiple
> bricks. The only
> > consistent clue is that one of the duplicate files has the
> sticky bit set. I
> > am hoping someone will be able to shed some light on why
> this is happening
> > and how we can restore the volume as there appear to be
> hundreds of such
> > files. I will try to provide as much pertinent information
> as I can.
> >
> > We have a 130TB Gluster volume consisting of two 20TB bricks
> on server1, and
> > three 40TB bricks on a server2 which were added at a later
> date (and
> > rebalancing was done). The volume is mounted on server1, and
> accessed only
> > through this server but by many users. Both servers went
> down due to power
> > loss several days ago after which this problem was first
> noticed. We ran a
> > rebalance command on the volumes, this has not fixed the
> problem.
> >
> >
> > Gluster volume info:
> > Volume Name: safari
> > Type: Distribute
> > Volume ID: d48d0e6b-4389-4c2c-8fd1-cd2854121eda
> > Status: Started
> > Number of Bricks: 5
> > Transport-type: tcp
> > Bricks:
> > Brick1: server1:/data/glusterfs/safari/brick00/brick
> > Brick2: server1:/data/glusterfs/safari/brick01/brick
> > Brick3: server2:/data/glusterfs/safari/brick02/brick
> > Brick4: server2:/data/glusterfs/safari/brick03/brick
> > Brick5: server2:/data/glusterfs/safari/brick04/brick
> >
> >
> > Size information:
> > /dev/sdc 37T 16T 22T 42% /data/glusterfs/safari/brick02
> > /dev/sdd 37T 16T 22T 42% /data/glusterfs/safari/brick03
> > /dev/sde 37T 17T 21T 45% /data/glusterfs/safari/brick04
> > /dev/md126 11T 7.7T 2.8T 74% /data/glusterfs/safari/brick00
> > /dev/md124 11T 8.0T 2.5T 77% /data/glusterfs/safari/brick01
> > server2:/safari 130T 63T 68T 48% /sar
> >
> >
> > Example 1:
> > -Two files with the same name exist in one directory
> > -They have different contents and attributes
> > -A file listing on the mounted volume shows the same inode
> > -The newer file has sticky bit set
> > -Neither file is corrupted, they can both be viewed by using
> the absolute
> > path (on the bricks)
> >
> > File listing on the mounted volume
> > 13036730497538635177 -rw-rw-r-T 1 jon users 924 Dec 15 10:42
> RSLC_tab
> > 13036730497538635177 -rw-rw-r-- 1 jon users 418 Mar 18 2013
> RSLC_tab
> >
> > Listing of the files on the bricks:
> > 8925798411 -rw-rw-r-T+ 2 jon users 924 Dec 15 10:42
> >
> /data/glusterfs/safari/brick00/brick/complete/shm/rs2/ottawa/mf6_asc/stack_org/RSLC_tab
> > 51541886672 -rw-rw-r--+ 2 1002 users 418 Mar 18 2013
> >
> /data/glusterfs/safari/brick02/brick/complete/shm/rs2/ottawa/mf6_asc/stack_org/RSLC_tab
> >
> >
> > Example 2:
> > -Two files with the same name exist in one directory
> > -They have the same content and attributes
> > -No sticky bit is set when looking at file listing on the
> mounted volume
> > -Sticky bit is set for one while when looking at file
> listing on the bricks
> > -Files are corrupted
> >
> > File listing on the mounted volume:
> > 13012555852904096080 -rw-rw-r-- 1 tom users 2393848 Dec 8 2013
> > ifg_lr/20130226_20130813.diff.phi.ras
> > 13012555852904096080 -rw-rw-r-- 1 tom users 2393848 Dec 8 2013
> > ifg_lr/20130226_20130813.diff.phi.ras
> >
> > Listing of the files on the bricks:
> > 17058578 -rw-rw-r-T+ 2 tom users 2393848 Dec 13 17:11
> >
> /data/glusterfs/safari/brick00/brick/rsc/rs2/calgary/u22_dsc/stack_org/ifg_lr/20130226_20130813.diff.phi.ras
> > 57986922129 -rw-rw-r--+ 2 1010 users 2393848 Dec 8 2013
> >
> /data/glusterfs/safari/brick02/brick/rsc/rs2/calgary/u22_dsc/stack_org/ifg_lr/20130226_20130813.diff.phi.ras
> >
> >
> > Additionally, only some files in this directory are
> duplicated. The
> > duplicated files are corrupted (can not be viewed as Raster
> images: the
> > original file type)
> > The files which are not duplicated are not corrupted.
> >
> > File command: (notice duplicate and singleton files)
> > ifg_lr/20091021_20100218.diff.phi.ras: Sun raster image
> data, 1208 x 1981,
> > 8-bit, RGB colormap
> > ifg_lr/20091021_20101016.diff.phi.ras: data
> > ifg_lr/20091021_20101016.diff.phi.ras: data
> > ifg_lr/20091021_20101109.diff.phi.ras: Sun raster image
> data, 1208 x 1981,
> > 8-bit, RGB colormap
> > ifg_lr/20091021_20101203.diff.phi.ras: Sun raster image
> data, 1208 x 1981,
> > 8-bit, RGB colormap
> > ifg_lr/20091021_20101227.diff.phi.ras: Sun raster image
> data, 1208 x 1981,
> > 8-bit, RGB colormap
> > ifg_lr/20091021_20110120.diff.phi.ras: Sun raster image
> data, 1208 x 1981,
> > 8-bit, RGB colormap
> > ifg_lr/20091021_20110213.diff.phi.ras: data
> > ifg_lr/20091021_20110213.diff.phi.ras: data
> > ifg_lr/20091021_20110309.diff.phi.ras: data
> > ifg_lr/20091021_20110309.diff.phi.ras: sticky data
> > ifg_lr/20091021_20110402.diff.phi.ras: Sun raster image
> data, 1208 x 1981,
> > 8-bit, RGB colormap
>
>
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