Hello, I am PhD student and I intend to conduct performance experiments adopting pNFS. First of all, i need to build the pNFS Block Layout environment. I apologize for the long mail, but i need to explain all the steps conducted to build the environment. I followed the steps presented in http://wiki.linux-nfs.org/wiki/index.php/PNFS_Block_Server_Setup_Instructions. Steps. (1) Building and install the kernel. And these configurations on .config file i adopted this code: git clone git://linux-nfs.org/~bhalevy/linux-pnfs.git CONFIG_NFSD=m CONFIG_NFSD_V4=y CONFIG_PNFSD=y # CONFIG_PNFSD_LOCAL_EXPORT is not set CONFIG_PNFSD_BLOCK=y (2) Building the nfsutils and utils/blkmapd git clone git://linux-nfs.org/~bhalevy/pnfs-nfs-utils.git (3) Export the file system. ----------------------------------------------------------------- For the block access to work properly the disks must have a signature. Partitioned the disks using "parted". Disks partitioned with "fdisk" doesn't have the signatures. I have followed the below mentioned steps. parted /dev/sdb (parted) mklabel gpt (parted) mkpart 1 <Provide start and end of the partetions> (parted) print Model: VMware Virtual disk (scsi) Disk /dev/sdb: 53.7GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 17.4kB 53.7GB 53.7GB ext3 1 msftres I have tested with ext4 file system, create ext4 file system with 4K block size. # mkfs.ext4 -b 4096 /dev/sdb1 ----------------------------------------------------------------- The steps 1, 2 and 3 i did to all machines (data servers, metadata server and client). I adopted the export option in metadata server exports file. /mnt *(rw,sync,fsid=0,insecure,no_subtree_check,no_root_squash,pnfs) And run the following script to start the server. #/bin/bash # UMOUNT /mnt umount /mnt #start the service service tgtd restart sleep 8 # Create iSCSI target tgtadm --lld iscsi --op new --mode target --tid 1 -T iqn.1992-05.com.emc:openblock # Expose LUN as iSCSI target tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 1 --backing-store /dev/sdb # Allow acces of all initiator tgtadm --lld iscsi --mode target --op bind --tid 1 --initiator-address ALL # show all the details tgtadm --lld iscsi --op show --mode target # mount the partetion mount /dev/sdb1 /mnt sleep 3 # start the nfs server service nfs restart sleep 3 # start the deamon cd <CTL_SRC>/ctl/ ./ctl -u & If the data server and metadata server have been run on the same machine everything works normally. My question is how do I add other pNFS data servers in the environment. I know that is related to creating iscsi targets. But how the data servers are linked with the metadata server. There is some configuration file to inform the metadata server like in spNFS? How it works? Thanks in advance. -- Bruno Silva Computer Engineer Modcs Group --------------------------------------------------------------------- Facebook goo.gl/QHaZx Twitter goo.gl/yk4jf Google+ goo.gl/xIbgk -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
