Re: FW: ATTN: nbalacha IRC - Gluster - BlackoutWNCT requested info for 0byte file issue

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Hey Nithya,

 

root@PB-WA-AA-00-A:/# glusterfs -V

glusterfs 3.10.1

Repository revision: git://git.gluster.org/glusterfs.git

Copyright (c) 2006-2016 Red Hat, Inc. <https://www.gluster.org/>

GlusterFS comes with ABSOLUTELY NO WARRANTY.

It is licensed to you under your choice of the GNU Lesser

General Public License, version 3 or any later version (LGPLv3

or later), or the GNU General Public License, version 2 (GPLv2),

in all cases as published by the Free Software Foundation.

 

We have also set the performance.parallel-readdir option to off, based on the information provided in the Bugzilla report you included.

We’re currently pending confirmation as to if this has resolved the issue for the short term. I’ll update you with this once I’ve received confirmation.

 

We’re also planning an upgrade to 3.10.2 shortly.

 

Regards,

Probax

Joshua Coyle

P

1300 885 117

E

joshua.coyle@xxxxxxxxx

W

probax.io

A

QV1 Perth,

Level 33/250 St Georges Tce,

Perth WA 6000

smart safe local cloud

 

 

From: Nithya Balachandran [mailto:nbalacha@xxxxxxxxxx]
Sent: Wednesday, May 31, 2017 6:20 PM
To: Joshua Coyle <joshua.coyle@xxxxxxxxx>
Cc: gluster-users@xxxxxxxxxxx; Gurusiddaiah, Poornima <pgurusid@xxxxxxxxxx>; Raghavendra Gowdappa <rgowdapp@xxxxxxxxxx>; Ravishankar Narayanankutty <ranaraya@xxxxxxxxxx>
Subject: Re: [Gluster-users] FW: ATTN: nbalacha IRC - Gluster - BlackoutWNCT requested info for 0byte file issue

 

CCing Ravi (arbiter) , Poornima and Raghavendra (parallel readdir)

 

Hi Joshua,

 

I had a quick look at the files you sent across.  To summarize the issue, you see empty linkto files on the mount point. 

 

From the logs I see  that parallel readdir is enabled for this volume:

 

performance.readdir-ahead: on

performance.parallel-readdir: on

 

There was a similar issue reported earlier [1] and fixed as part of [2]. Which version of gluster are you running? Poornima and Raghavendra, can you take a look and see if it is the same issue?

 

 

 

An interesting observation - the value of the  trusted.glusterfs.dht.linkto xattr is different on the one of the bricks of the replica set for some of the files(Ravi, any idea why ?)

 

---------T 2 root root 0 May 18 16:49 /arbiterAA01/gvAA01/brick1/vaultAA01/support-couplers/CPL-SBS01 (CPL-SBS01)/D_VOL-b002-i1873-cd.md5

 

root@PB-WA-AA-00-A:/# getfattr -e hex -m . -d /arbiterAA01/gvAA01/brick1/vaultAA01/support-couplers/CPL-SBS01\ \(CPL-SBS01\)/D_VOL-b002-i1873-cd.md5

getfattr: Removing leading '/' from absolute path names

# file: arbiterAA01/gvAA01/brick1/vaultAA01/support-couplers/CPL-SBS01 (CPL-SBS01)/D_VOL-b002-i1873-cd.md5

trusted.gfid=0xfc31c380697a4c70b6af1af35822e519

trusted.glusterfs.dht.linkto=0x6776414130312d726561646469722d61686561642d3100

 

This value is "gvAA01-readdir-ahead-1"

 

 

 

---------T 2 root root 0 May 18 16:49 /brick1/gvAA01/brick/vaultAA01/support-couplers/CPL-SBS01 (CPL-SBS01)/D_VOL-b002-i1873-cd.md5

 

root@PB-WA-AA-01-B:/# getfattr -e hex -m . -d /brick1/gvAA01/brick/vaultAA01/support-couplers/CPL-SBS01\ \(CPL-SBS01\)/D_VOL-b002-i1873-cd.md5

getfattr: Removing leading '/' from absolute path names

# file: brick1/gvAA01/brick/vaultAA01/support-couplers/CPL-SBS01 (CPL-SBS01)/D_VOL-b002-i1873-cd.md5

trusted.gfid=0xfc31c380697a4c70b6af1af35822e519

trusted.glusterfs.dht.linkto=0x6776414130312d726561646469722d61686561642d3100

 

This value is "gvAA01-readdir-ahead-1"

 

 

 

---------T 2 root root 0 May 30 14:25 /brick1/gvAA01/brick/vaultAA01/support-couplers/CPL-SBS01 (CPL-SBS01)/D_VOL-b002-i1873-cd.md5

 

root@PB-WA-AA-02-B:/# getfattr -e hex -m . -d /brick1/gvAA01/brick/vaultAA01/support-couplers/CPL-SBS01\ \(CPL-SBS01\)/D_VOL-b002-i1873-cd.md5

getfattr: Removing leading '/' from absolute path names

# file: brick1/gvAA01/brick/vaultAA01/support-couplers/CPL-SBS01 (CPL-SBS01)/D_VOL-b002-i1873-cd.md5

trusted.afr.dirty=0x000000000000000000000000

trusted.bit-rot.version=0x020000000000000058df0ab7000710ee

trusted.gfid=0xfc31c380697a4c70b6af1af35822e519

trusted.glusterfs.dht.linkto=0x6776414130312d7265706c69636174652d3100

 

This value is "gvAA01-replicate-1"

 

 

 

On 30 May 2017 at 14:20, Joshua Coyle <joshua.coyle@xxxxxxxxx> wrote:

 

 

Probax

Joshua Coyle

P

1300 885 117

E

joshua.coyle@xxxxxxxxx

W

probax.io

A

QV1 Perth,

Level 33/250 St Georges Tce,

Perth WA 6000

smart safe local cloud

 

 

From: Joshua Coyle
Sent: Tuesday, May 30, 2017 3:27 PM
To: 'gluster-devel@xxxxxxxxxxx' <gluster-devel@xxxxxxxxxxx>
Subject: ATTN: nbalacha IRC - Gluster - BlackoutWNCT requested info for 0byte file issue

 

Hey nbalacha,

 

Please find the requested information attached for the issue being discussed in IRC.

 

If you need any further info, please let me know.

 

Thanks,

 

BlackoutWNCT

Probax

Joshua Coyle

P

1300 885 117

E

joshua.coyle@xxxxxxxxx

W

probax.io

A

QV1 Perth,

Level 33/250 St Georges Tce,

Perth WA 6000

smart safe local cloud

 

 


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