[Gluster-users] Question about "Possibly undergoing heal" on a file being reported.

[Joe Julian]

FYI, that's not "no activity". The file is clearly changing. The dirty 
state flipping back and forth between 1 and 0 is a byproduct of writes 
occurring. The clients set the flag, do the write, then clear the flag. 
My guess is that's why it's only "possibly" undergoing self-heal. The 
write may have still been pending at the moment of the check.

On 05/05/2016 10:22 AM, Richard Klein (RSI) wrote:
> There are 2 hosts involved and we have a replica value of 2.  The hosts are called n1c1cl1 and n1c2cl1.  Below is the info you requested. The file name in gluster is "/97f52c71-80bd-4c2b-8e47-3c8c77712687".
>
> -- From the n1c1cl1 brick --
>
> [root at n1c1cl1 ~]# ll -h /data/brick0/gv0cl1/97f52c71-80bd-4c2b-8e47-3c8c77712687
> -rwxr--r--. 2 root root 3.7G May  5 12:10 /data/brick0/gv0cl1/97f52c71-80bd-4c2b-8e47-3c8c77712687
>
> [root at n1c1cl1 ~]# getfattr -d -m . -e hex /data/brick0/gv0cl1/97f52c71-80bd-4c2b-8e47-3c8c77712687
> getfattr: Removing leading '/' from absolute path names
> # file: data/brick0/gv0cl1/97f52c71-80bd-4c2b-8e47-3c8c77712687
> security.selinux=0x73797374656d5f753a6f626a6563745f723a64656661756c745f743a733000
> trusted.afr.dirty=0xe68000000000000000000000
> trusted.bit-rot.version=0x020000000000000057196a8d000e1606
> trusted.gfid=0xb1a49bd1ea01479f9a8277992461e85f
>
> -- From the n1c2cl1 brick --
>
> [root at n1c2cl1 ~]# ll -h /data/brick0/gv0cl1/97f52c71-80bd-4c2b-8e47-3c8c77712687
> -rwxr--r--. 2 root root 3.7G May  5 12:16 /data/brick0/gv0cl1/97f52c71-80bd-4c2b-8e47-3c8c77712687
>
> [root at n1c2cl1 ~]# getfattr -d -m . -e hex /data/brick0/gv0cl1/97f52c71-80bd-4c2b-8e47-3c8c77712687
> getfattr: Removing leading '/' from absolute path names
> # file: data/brick0/gv0cl1/97f52c71-80bd-4c2b-8e47-3c8c77712687
> security.selinux=0x73797374656d5f753a6f626a6563745f723a64656661756c745f743a733000
> trusted.afr.dirty=0xd38000000000000000000000
> trusted.bit-rot.version=0x020000000000000057196a8d000e20ae
> trusted.gfid=0xb1a49bd1ea01479f9a8277992461e85f
>
> --
>
> The "trusted.afr.dirty" is changing about 2 or 3 times a minute on both files.  Let me know if you need further info and thanks.
>
> Richard Klein
> RSI
>
>
>
> From: Ravishankar N [mailto:ravishankar at redhat.com]
> Sent: Wednesday, May 04, 2016 8:52 PM
> To: Richard Klein (RSI); gluster-users at gluster.org
> Subject: Re: [Gluster-users] Question about "Possibly undergoing heal" on a file being reported.
>
>
>> On 05/05/2016 01:50 AM, Richard Klein (RSI) wrote:
>> First time e-mailer to the group, greetings all.  We are using Gluster 3.7.6 in Cloudstack on CentOS7 with KVM.  Gluster is our primary storage.  All is going well >but we have a test VM QCOW2 volume that gets stuck in the "Possibly undergoing healing".  By stuck I mean it stays in that state for over 24 hrs.  This is a test VM >with no activity on it and we have removed the swap file on the guest as well thinking that may be causing high I/O.  All the tools show that the VM is basically idle >with low I/O.  The only way I can clear it up is to power the VM off, move the QCOW2 volume from the Gluster mount then back (basically remove and recreate it) >then power the VM back on.  Once I do this process all is well again but then it happened again on the same volume/file.
>>   
>> One additional note, I have even powered off the VM completely and the QCOW2 file still stays in this state.
>>   
>> When this happens, can you share the output of the extended attributes of the file in question from all the bricks of the replica in which the file resides?
> `getfattr -d -m . -e hex /path/to/bricks/file-name`
>
> Also what is the size of this VM image file?
>
> Thanks,
> Ravi
>
>
>
>> Is there a way to stop/abort or force the heal to finish?  Any help with a direction would be appreciated.
>>   
>> Thanks,
>>   
>> Richard Klein
>> RSI
>   
>
>
>
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