Hello, i executed the command "ls -al /pvfs2-storage-space" and the output is drwxrwxrwx 3 root root 4096 .drwxr-xr-x 26 root root 4096 ..drwxr-xr-x 4 root root 4096 55a24509-rw------- 1 root root 8192 collections.db-rw------- 1 root root 8192 storage_attributes.db So, am i going to create a new file named DB_CONFIG file in /pvfs2-storage-space and use some methods inside?Cause in the folder there is no db_config file. If i create the db_config file, is the pvfs2-server going to see the new updates for berkeley?Shall i do any "make" after i do the updates? Thanks, in advanceDate: Wed, 14 Dec 2011 18:16:56 -0500 Subject: Re: [Pvfs2-users] Where it the DB_CONFIG file of berkeley db located under pvfs? From: [email protected] To: [email protected] CC: [email protected]
/pvfs2-storage-space is the default StorageSpace value, so we'll use that. I'm not 100% sure what the layout of /pvfs2-storage-space was back in 2.8.1. Please run "ls -al /pvfs2-storage-space" on one of the metadata servers. Thanks,Michael 2011/12/14 g_p g_p <[email protected]> Hello and thanks for replying.Actually, i don't have any directory named orangefs.I have downloaded the version pvfs-2.8.1 and the version 4.8.30 of Berkeley db. In /pvfs2-storage-space there are some files such as collection_attributes.db,dataspace_attributes.db, log.0000000005 etc In /pvfs2-storage-space there is no DB_CONFIG file. 1) Shall i create a DB_CONFIG file in that specific dir /pvfs2-storage-space for berkeley db? 2) Is berkeley going to read that specific configuration when in starts?3) Shall i use "make" or "make install" after i make the modifications to the db_config file? (shall i do these modifications to every metadata server?) 4) Is /pvfs2-storage-space used in order to store the metadata of each metadata server? Thanks, in advance Date: Tue, 13 Dec 2011 09:57:33 -0500 Subject: Re: [Pvfs2-users] Where it the DB_CONFIG file of berkeley db located under pvfs? From: [email protected] To: [email protected] CC: [email protected] Hi, Berkeley DB should be searching DB_HOME for a DB_CONFIG file. In OrangeFS, DB_HOME is the MetadataStorageSpace (or StorageSpace value in older versions) plus a sub directory whose name is a hex value. An example of DB_HOME, assuming MetadataStorageSpace is set to /orangefs/meta, would be /orangefs/meta/783070ef. So, place your DB_CONFIG in that directory and you should be good. One another note, I'm don't know what parameters you're interested in changing but some (cache size and type) can be configured through the OrangeFS configuration file. Good luck,Michael 2011/12/11 g_p g_p <[email protected]> Hello, i'm using PVFS and i would like to make some modifications in the Berkeley configuration fileof PVFS. I'm using db4.8.30 Berkeley db. All the metadata servers consist of a file named pvfs2-server which is located under /usr/sbin/ directory. If we open that specific file "/usr/sbin/pvfs2-server" we see some methods of berkeley database in it(with some flags set). Of course, the file has some non-readable characters but if we read some lines carefully, we can recognise that there are methods of berkeley in it. I would like to make some modifications in the Berkeley db of pvfs. As i have read in the documentations i shall modify the DB_CONFIG file in the db home directory but i can't find that file "DB_CONFIG". Where can i locate the DB_CONFIG file of PVFS in order to make some modifications? Also, shall i modify all the DB_CONFIG files of all the metadata servers,datanodes and clients? Thanks, in advance! _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
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