Archive for the ‘NFS’ Category

  • InnoDB: Unable to lock ./ibdata1, error: 37

    Tuesday, June 1st, 2010

    InnoDB: Unable to lock ./ibdata1, error: 37 I recently faced the “error  InnoDB: Unable to lock ./ibdata1, error: 37 “ while moving my data directory to NFS from local disk , when I restarted the mysql , the restart failed and I got the error in the error log , all permissions were set properly [...]

  • MYSQL WITH LINUX OPERATING SYSTEMS

    Thursday, November 5th, 2009

    LINUX SETTINGS ENLARGING A CLIENT’S TRANSPORT SOCKET BUFFERS Enlarging the transport socket buffers that Linux uses for NFS traffic helps reduce resource contention on the client, reduces performance variance, and improves maximum data and operation throughput. In future releases of the client, the following procedure will not be necessary, because the client will automatically choose [...]

  • mount: wrong fs type, bad option

    Tuesday, November 3rd, 2009

    Basically following libraries are missing as it is required by nfs client. After installing following libraries, i am able to mount the nfs partition #yum install nfs-* #yum install nfs-common Installing: nfs-utils x86_64 1:1.0.9-42.el5 base 389 k nfs-utils-lib i386 1.0.8-7.6.el5 base 55 k nfs-utils-lib-devel i386 1.0.8-7.6.el5 base 57 k nfs-utils-lib-devel x86_64 1.0.8-7.6.el5 base 63 k

  • Optimizing NFS Performance

    Saturday, October 31st, 2009

    Optimizing NFS Performance Careful analysis of your environment, both from the client and from the server point of view, is the first step necessary for optimal NFS performance. The first sections will address issues that are generally important to the client. Later (Section 5.3 and beyond), server side issues will be discussed. In both cases, [...]

  • What values can be tuned to improve NFS performance?

    Saturday, October 31st, 2009

    In most situations the default NFS configuration should allow file access at acceptable speeds. However there may be situations that require tuning of the NFS client for specific circumstances. An example command to mount the remote export from a NFS server sharing large media files could be: mount -t nfs -o noacl,nocto, rsize=32768,wsize=32768 mediaserver:/exports /mnt/mediaserver/ [...]

  • NetApp NFS mount for Red Hat Linux 5.2

    Saturday, October 31st, 2009

    Just another post from my mails, where I have collected some Best Practices for mounting NFS share in RHRL. Automounter An automounter can cause a lot of network chatter, so it is best to disable the automounter on your client and set up static mounts before taking a network trace. Automounters depend on the availability [...]

  • Tuning on NFS and network

    Saturday, October 31st, 2009

    Without any tuning ########################################################## 192.168.1.1:/vol/data /data nfs rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,noac,vers=3,timeo=600 0 0 [root@server data]# [root@server /]# cd /data [root@server data]# time dd if=/dev/zero of=bigfile1 bs=1024k count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 156.126 seconds, 6.7 MB/s real 2m36.932s user 0m0.000s sys 0m1.476s After tuning vi /etc/fstab ######################################## 192.168.1.1:/vol/data /data nfs rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,noatime,vers=3,timeo=600 0 [...]