Bug 1258782 - DHT: After deletion of all files, still "ls" shows few files
DHT: After deletion of all files, still "ls" shows few files
Product: Red Hat Gluster Storage
Classification: Red Hat
Component: distribute (Show other bugs)
Unspecified Unspecified
medium Severity unspecified
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Assigned To: Nithya Balachandran
triaged, rebalance-readdir-race
: ZStream
Depends On:
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Reported: 2015-09-01 05:38 EDT by RajeshReddy
Modified: 2018-02-23 02:12 EST (History)
4 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2018-02-23 02:12:02 EST
Type: Bug
Regression: ---
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Documentation: ---
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Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description RajeshReddy 2015-09-01 05:38:02 EDT
Document URL: 
DHT: After deletion of all files, still "ls" shows few files 

1. Create distributed volume (3 bricks) and mount it on client using FUSE 
2. On the client create 50k files 
3. Remove one of the brick, and as part of the removal of brick, re-balance triggered and while files are migrating run rm -rf * on mount though command exit without any error but ls on the same direcotry shows files 

Expected Result:
After removal of files, all files needs to be deleted 

[root@rhs-client9 dht7]# gluster vol status dht7
Status of volume: dht7
Gluster process                             TCP Port  RDMA Port  Online  Pid
Brick rhs-client9.lab.eng.blr.redhat.com:/r
hs/brick4/dht7                              49173     0          Y       11879
Brick rhs-client4.lab.eng.blr.redhat.com:/r
hs/brick4/dht7                              49172     0          Y       5051 
Brick rhs-client39.lab.eng.blr.redhat.com:/
rhs/brick4/dht7                             49162     0          Y       28520
NFS Server on localhost                     2049      0          Y       12217
NFS Server on rhs-client4.lab.eng.blr.redha
t.com                                       2049      0          Y       5564 
NFS Server on rhs-client39.lab.eng.blr.redh
at.com                                      2049      0          Y       28636
Task Status of Volume dht7
Task                 : Remove brick        
ID                   : 714849d5-ee98-4833-952e-af4509d4198e
Removed bricks:     
Status               : completed           

On the client

[root@scarface data]# ls | wc -l

Attaching the sos reports
Comment 2 Sakshi 2015-09-23 01:25:46 EDT
It is possible that the files which are remaining are the ones that were migrated from the brick that you are removing. However the files were migrated only after the rm -rf had completed reading from the remaining subvols. Hence some of the migrated files may not be a part of the readdirp that happened as a part of rm -rf and hence did not get deleted.

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