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Created attachment 1472001[details]
tcpdump
Description of problem:
The customer has an NFS mount for backups. The same mount (which is hosted on a NetApp filer) is used by RHEL6 clients and these do not any issue. On RHEL7.5 when writing a simple file (eg. "echo test > test") it takes around 2 minutes to get the command prompt back.
Version-Release number of selected component (if applicable):
How reproducible:
It is reproducible easily with netapp filer.
The customer says RHEL6 do not have any a problem but I am verifying this again and update.
[root@srdadora0233 ~]# mount -t nfs -o vers=4.1,sec=sys 192.168.112.15:/Backup_D /mnt/nfs/backup -vvv
mount.nfs: timeout set for Tue Jul 31 12:35:09 2018
mount.nfs: trying text-based options 'vers=4.1,sec=sys,addr=192.168.112.15,clientaddr=192.168.112.29'
[root@srdadora0233 ~]# mount | grep Backup_D
192.168.112.15:/Backup_D on /mnt/nfs/backup type nfs4 (rw,relatime,vers=4.1,rsize=65536,wsize=65536,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.112.29,local_lock=none,addr=192.168.112.15)
[root@srdadora0233 ~]# dd if=/dev/urandom of=/mnt/nfs/backup/testfile_without_cache bs=1M count=1000 oflag=direct
^C^C^C^C
2+0 records in
2+0 records out
2097152 bytes (2.1 MB) copied, 781.646 s, 2.7 kB/s
Steps to Reproduce:
1. Mount the share with nfs4.1
2. Try dd command
3.
Actual results:
The dd command should complete quickly but it takes much longer then expected.
Expected results:
Additional info:
Looks to me they are the same issue.
Closing this as there's customer tracker on another one.
*** This bug has been marked as a duplicate of bug 1610632 ***
Created attachment 1472001 [details] tcpdump Description of problem: The customer has an NFS mount for backups. The same mount (which is hosted on a NetApp filer) is used by RHEL6 clients and these do not any issue. On RHEL7.5 when writing a simple file (eg. "echo test > test") it takes around 2 minutes to get the command prompt back. Version-Release number of selected component (if applicable): How reproducible: It is reproducible easily with netapp filer. The customer says RHEL6 do not have any a problem but I am verifying this again and update. [root@srdadora0233 ~]# mount -t nfs -o vers=4.1,sec=sys 192.168.112.15:/Backup_D /mnt/nfs/backup -vvv mount.nfs: timeout set for Tue Jul 31 12:35:09 2018 mount.nfs: trying text-based options 'vers=4.1,sec=sys,addr=192.168.112.15,clientaddr=192.168.112.29' [root@srdadora0233 ~]# mount | grep Backup_D 192.168.112.15:/Backup_D on /mnt/nfs/backup type nfs4 (rw,relatime,vers=4.1,rsize=65536,wsize=65536,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.112.29,local_lock=none,addr=192.168.112.15) [root@srdadora0233 ~]# dd if=/dev/urandom of=/mnt/nfs/backup/testfile_without_cache bs=1M count=1000 oflag=direct ^C^C^C^C 2+0 records in 2+0 records out 2097152 bytes (2.1 MB) copied, 781.646 s, 2.7 kB/s Steps to Reproduce: 1. Mount the share with nfs4.1 2. Try dd command 3. Actual results: The dd command should complete quickly but it takes much longer then expected. Expected results: Additional info: