Re: [Gluster-devel] self heal fails

[Pranith Kumar Karampuri]

>>After bringing the brick back online self heal fails with the error below.
<where is the error?>
>>From what I can tell, self heal only fails on symlinks (that didn’t change) 
>>in the folder where the changes have been mad.

Could you please provide the logs.

Pranith
----- Original Message -----
From: "Robert Hassing" <address@hidden>
To: address@hidden
Sent: Monday, June 11, 2012 3:37:39 PM
Subject: Re: [Gluster-devel] self heal fails





Hi



Did someone find the cause of this problem?

I got into the same situation.



Setup:



Brink1

Brick2

Several clients



After shutting doen one of the bricks, we write some data to the shared 
filesystem

After bringing the brick back online self heal fails with the error below. 

>From what I can tell, self heal only fails on symlinks (that didn’t change) in 
>the folder where the changes have been made.



Regards

Robert Hassing





>From :

Pranith Kumar Karampuri


Subject :

Re: [Gluster-devel] self heal fails


Date :

Tue, 05 Jun 2012 10:19:15 -0400 (EDT)



Emmanuel,

For some reason /manu/netbsd/usr/src/lib/libkafs/libkafs.so.9 and its

parent dir have trusted.gfid all zero, this is worse. This is brand new for me.

Do let me know if you have a test case to get into this situation.



Pranith

----- Original Message -----

From: "Emmanuel Dreyfus" <address@hidden>

To: "Pranith Kumar Karampuri" <address@hidden>

Cc: "Emmanuel Dreyfus" <address@hidden>, address@hidden

Sent: Tuesday, June 5, 2012 7:01:24 PM

Subject: Re: [Gluster-devel] self heal fails



On Tue, Jun 05, 2012 at 07:57:16AM -0400, Pranith Kumar Karampuri wrote:

> If lookup triggers self-heal and the self-heal fails, lookup

> wont fail unless it is a splitbrain on the entry i.e. gfid mismatch.

> There seems to be a problem in the logs you have mentioned. For

> some reason the gfid is all zeros, I wonder how you hit this case.

> Do you have a testcase that can re-create this case.



It keeps going on for now, but I do not know how I got this situation.



> Could you post the output of

> 'getfattr -d -m . -e hex' for /manu/netbsd/usr/src/lib/libkafs,

> /manu/netbsd/usr/src/lib/libkafs/libkafs.so.9,

> /manu/netbsd/usr/src/lib/libkafs/libkafs.so On both the bricks.



The commands are a bit different, but here is the info:

brick0

manu/netbsd/usr/src/lib/libkafs/

trusted.afr.pfs-client-1

00 00 00 00 00 00 00 00 00 00 00 03 00

trusted.afr.pfs-client-0

00 00 00 00 00 00 00 00 00 00 00 00 00

trusted.gfid

00 00 00 00 00 00 00 00 00 00 00 00 00

manu/netbsd/usr/src/lib/libkafs/libkafs.so.9

trusted.afr.pfs-client-1

00 00 00 00 00 00 00 00 00 00 00 00 00

trusted.afr.pfs-client-0

00 00 00 00 00 00 00 00 00 00 00 00 00

trusted.gfid

00 00 00 00 00 00 00 00 00 00 00 00 00

manu/netbsd/usr/src/lib/libkafs/libkafs.so

trusted.afr.pfs-client-1

be 77 68 6e ba d2 45 d2 8c c2 1a 0e 37 9a 44 0a

trusted.afr.pfs-client-0

a4 19 75 e7 f9 be 44 09 bb e8 70 76 6a 04 95 46

trusted.gfid

a4 19 75 e7 f9 be 44 09 bb e8 70 76 6a 04 95 46



brick1

manu/netbsd/usr/src/lib/libkafs/

trusted.afr.pfs-client-1

ENODATA

trusted.afr.pfs-client-0

ENODATA

trusted.gfid

be 77 68 6e ba d2 45 d2 8c c2 1a 0e 37 9a 44 0a

manu/netbsd/usr/src/lib/libkafs/libkafs.so.9

trusted.afr.pfs-client-1

00 00 00 00 00 00 00 00 00 00 00 00 00

trusted.afr.pfs-client-0

00 00 00 00 00 00 00 00 00 00 00 00 00

trusted.gfid

a4 19 75 e7 f9 be 44 09 bb e8 70 76 6a 04 95 46

manu/netbsd/usr/src/lib/libkafs/libkafs.so

trusted.afr.pfs-client-1

00 00 00 00 00 00 00 00 00 00 00 00 00

trusted.afr.pfs-client-0

00 00 00 00 00 00 00 00 00 00 00 00 00

trusted.gfid

a4 19 75 e7 f9 be 44 09 bb e8 70 76 6a 04 95 46



I am a bit suprised that libkafs.so and libkafs.so.9.0 have the

same gfid: They are just symlinks to the same node. Bug?

Here is ls -lid on brick1:



17407737 drwxr-xr-x 3 manu manu 1024 Jun 5 13:31

manu/netbsd/usr/src/lib/libkafs/

17434245 lrwxrwxrwx 2 manu manu 14 Jun 4 07:38

manu/netbsd/usr/src/lib/libkafs/libkafs.so -> libkafs.so.9.0

17433620 lrwxrwxrwx 2 manu manu 14 Jun 4 07:38

manu/netbsd/usr/src/lib/libkafs/libkafs.so.9 -> libkafs.so.9.0



I wonder if my recent chang with linkat could have introduced a bug.



--

Emmanuel Dreyfus

address@hidden






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