[CentOS] Sluggish server with big array [SOLVED]
boisvert.guy at videotron.ca
Sun Jan 20 21:59:43 UTC 2013
Le 2013-01-15 10:35, Paul Heinlein a écrit :
> On Tue, 15 Jan 2013, Guy Boisvert wrote:
>> I have a couple of samba shares from the 11 TB array (all of them
>> are on the 11TB array). The strange behavior is that if i "ls -al
>> /home/data", i have to wait 7-8 seconds to see the output. If i do a
>> simple ls, output is instantaneous. I see about the same delay when
>> i access the samba shares from the server (related ?). I don't know
>> where to start with this!
> This sounds like it might be an issue with cacheing user info.
> Do you have a remote authentication server, e.g., LDAP? Are you
> running nscd or sssd? Does re-starting the cacheing daemon help?
You were right: I turned off SMB, NMB & Winbind and ls -al on the
large array become fast as usual. Digging a little deeper, i found that
some of the sub-directories in /home/data had been restored from another
server and that they showed in unknown group "10432" in ls -al . So i
[root at radium home]# chgrp -R "domain users" /home/data
So in conclusion, it seems that my "ls -al" on the filesystem
containing unknown GID translated into queries to Active Directory and
for whatever reason, resulted in a delay of several seconds (like 10-15
Thanks Paul again.
More information about the CentOS