Bug 1286200 - DHT:REBALANCE- statfs failures are seen during rebalance
Summary: DHT:REBALANCE- statfs failures are seen during rebalance
Keywords:
Status: CLOSED WORKSFORME
Alias: None
Product: Red Hat Gluster Storage
Classification: Red Hat Storage
Component: distribute
Version: rhgs-3.1
Hardware: x86_64
OS: Linux
unspecified
medium
Target Milestone: ---
: ---
Assignee: Nithya Balachandran
QA Contact: Prasad Desala
URL:
Whiteboard: dht-rebalance-file, dht-fops-while-re...
: 1286207 (view as bug list)
Depends On: 1028287
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-11-27 12:28 UTC by Susant Kumar Palai
Modified: 2017-03-07 06:25 UTC (History)
10 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of: 1028287
Environment:
Last Closed: 2017-03-07 06:25:24 UTC
Embargoed:

Attachments (Terms of Use)

Comment 2 Nithya Balachandran 2016-01-11 10:04:39 UTC 
*** Bug 1286207 has been marked as a duplicate of this bug. ***
Comment 3 krishnaram Karthick 2016-07-01 13:01:57 UTC 
RCA:

dht_statfs_cbk should handle ENOENT/ESTALE errors just like dht_open_cbk/dht_stat_cbk as the file might've been moved out of the cached-subvol the client thinks.

regards,
Raghavendra
Comment 6 Prasad Desala 2017-02-01 07:42:53 UTC 
This issue still exists with glusterfs version: 3.8.4-13.el7rhgs.x86_64.

Steps:
1) Created a ganesha cluster and created a distributed-replicate volume.
2) Enabled nfs-ganesha on the volume with mdcache settings.
3) Mounted the volume on multiple clients.
4) Created files and folders.
5) From mount point, issued rm -rf * and started removing bricks.

During remove-brick rebalance, statfs failures are seen in rebalance logs.

ERROR SNIPPET in rebalance logs:
================================
[2017-02-01 06:45:27.197342] E [MSGID: 109023] [dht-rebalance.c:779:__dht_check_free_space] 0-distrep-dht: failed to get statfs of /2/linux-4.4.1/drivers/net/wireless/ath/ath5k/ani.h on distrep-replicate-2 (No such file or directory)
Comment 7 Nithya Balachandran 2017-02-01 08:51:24 UTC 
This is probably a valid scenario if the file is question was deleted just as the statfs was sent.

Do you see the issue with the steps listed in the description?
Comment 8 Prasad Desala 2017-03-06 17:04:13 UTC 
This issue is not reproduced on glusterfs version 3.8.4-15.el7rhgs.x86_64. Followed the same steps as in the description on both FUSE and NFS but the error reported in this BZ is not seen.
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