Bug 990897 - ' Short read ' on calculating are equal check sum on mount point , while trying to create files which are greater than the brick size
' Short read ' on calculating are equal check sum on mount point , while tryi...
Status: CLOSED DEFERRED
Product: Red Hat Gluster Storage
Classification: Red Hat
Component: glusterfs (Show other bugs)
2.1
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Bug Updates Notification Mailing List
storage-qa-internal@redhat.com
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Depends On:
Blocks: 1286095
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Reported: 2013-08-01 03:33 EDT by senaik
Modified: 2015-11-27 05:46 EST (History)
3 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 1286095 (view as bug list)
Environment:
Last Closed: 2015-11-27 05:44:50 EST
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


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Description senaik 2013-08-01 03:33:08 EDT
Description of problem:
======================== 
I/O error on calculating are equal check sum on mount point , while trying to create files which are greater than the brick size 


Version-Release number of selected component (if applicable):
=============================================================
3.4.0.14rhs-1.el6rhs.x86_64

How reproducible:
=================
always


Steps to Reproduce:
=================== 

1.Create a distribute volume with 2 bricks (each brick is 1GB in size)
2.Fuse mount the volume and create files which are greater than the brick size 
for i in {1..500} ; do dd if=/dev/urandom of=f"$i" bs=10M count=1; done

Files are created and after some time , we get 'No Space left on device'

3.[root@RHEL6 sample]# du -sh 
1.9G

4. Are equal check sum on the mount point fails with short read :
/opt/qa/tools/arequal-checksum /mnt/sample/
md5sum: /mnt/sample/f164: No such file or directory
/mnt/sample/f164: short read
ftw (/mnt/sample/) returned -1 (Success), terminating

 
Are equal check sum fails with short read for /f164 . 
As per our understanding , f164 was being created when the first brick was full and it creates a link file on the other brick for creation of file f164 and then continues with the creation of other files and so are equal fails with short read . 
Please correct me if I am wrong .   

-------------------------Part of the Log----------------------------
[2013-08-01 06:38:28.874289] W [fuse-bridge.c:2384:fuse_create_cbk] 0-glusterfs-fuse: 17599: /f500 => -1 (No space left on device)
[2013-08-01 06:38:28.874375] W [defaults.c:1291:default_release] (-->/usr/lib64/glusterfs/3.4.0.14rhs/xlator/protocol/client.so(client3_3_create_cbk+0xa01) [0x7f662567fe51] (-->/usr/lib64/glusterfs/3.4.0.14rhs/xlator/protocol/client.so(client_local_wipe+0x28) [0x7f662566ec98] (-->/usr/lib64/libglusterfs.so.0(fd_unref+0x13b) [0x3ee5a3975b]))) 0-fuse: xlator does not implement release_cbk
[2013-08-01 06:58:46.387644] W [client-rpc-fops.c:1170:client3_3_fgetxattr_cbk] 0-sample-client-0: remote operation failed: No data available
[2013-08-01 06:58:46.387704] E [dht-helper.c:761:dht_migration_complete_check_task] 0-sample-dht: (null): failed to get the 'linkto' xattr No data available
[2013-08-01 06:58:46.387960] W [page.c:991:__ioc_page_error] 0-sample-io-cache: page error for page = 0x7f6618021900 & waitq = 0x7f661802dbe0
[2013-08-01 06:58:46.388191] W [fuse-bridge.c:2603:fuse_readv_cbk] 0-glusterfs-fuse: 26162: READ => -1 (No such file or directory)
[2013-08-01 07:26:23.319505] E [dht-helper.c:761:dht_migration_complete_check_task] 0-sample-dht: /f164: failed to get the 'linkto' xattr No data available


Actual results:
================
Are equal check sum on the mount point fails with short read 

Expected results:



Additional info:
Comment 2 senaik 2013-08-01 03:45:43 EDT
Volume info : 
============ 

[root@jay tmp]# gluster v i sample
 
Volume Name: sample
Type: Distribute
Volume ID: 1895ec09-a451-4182-acd6-b258519c8c8e
Status: Started
Number of Bricks: 2
Transport-type: tcp
Bricks:
Brick1: 10.70.34.86:/BRICK1/b1
Brick2: 10.70.34.87:/BRICK1/b2


===================================================================== 

sosreports at : 
http://rhsqe-repo.lab.eng.blr.redhat.com/bugs_necessary_info/990897/

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