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• Architecture - Metadata API
  ...access and manipulate metadata. This page starts from describing existing API. As time goes MdAPI should evolve to become clear and sufficiently portable # UPDATE - protects all metadata attributes except permissions
  11 KB (1,588 words) - 14:16, 22 January 2010
• Architecture - New Metadata API
  # MDAPI consists of primitive metadata operations like lookup, getattr by fid, readdir, create, unlink, open, clos # MDD uses same API so that client can talk to MDD directly
  6 KB (919 words) - 14:18, 22 January 2010

Page text matches

• Clustered Metadata
  This document describes the design of the clustered metadata handling * Metadata Write Back caching
  5 KB (760 words) - 11:36, 10 September 2010
• Architecture Descriptions
  [[Architecture - Changelogs|''Changelogs'' ]] (Per-server logs of data or metadata changes) [[Architecture - Clustered Metadata|''Clustered Metadata'' ]] (Clustered metadata server capability)
  9 KB (1,200 words) - 12:09, 20 January 2011
• Architecture - MPI IO and NetCDF
  ...are libraries and machine-independent standard for storing scientific data(metadata and array data) in files. Here, it specially means the HDF5 library. |Scenario: || MPI collective open call this collective open API to open the file
  6 KB (861 words) - 14:17, 22 January 2010
• Architecture - New Metadata API
  # MDAPI consists of primitive metadata operations like lookup, getattr by fid, readdir, create, unlink, open, clos # MDD uses same API so that client can talk to MDD directly
  6 KB (919 words) - 14:18, 22 January 2010
• Architecture - Clustered Metadata
  == Clustering Metadata == ...r to provide enhanced scalability and performance, Lustre offers clustered metadata servers. This section will give an outline of the architecture.
  20 KB (3,407 words) - 14:00, 22 January 2010
• Architecture - Metadata API
  ...access and manipulate metadata. This page starts from describing existing API. As time goes MdAPI should evolve to become clear and sufficiently portable # UPDATE - protects all metadata attributes except permissions
  11 KB (1,588 words) - 14:16, 22 January 2010
• Architecture - Fileset
  ...es matching these criteria will be added to a fileset via a Lustre fileset API. |colspan=2|'''Business Goals:''' || Provide an API to facilitate filesystem operations based on database search output
  12 KB (1,742 words) - 14:10, 22 January 2010
• Architecture - MDS striping format
  ...ject storage servers (OSTs) is defined in extended attributes (EAs) on the metadata server (MDS). This information, called the “striping EA”, is described In a Lustre file system, metadata and data are stored separately, in the metadata server (MDS) and in the object storage server (OST) respectively. When acce
  31 KB (4,814 words) - 14:15, 22 January 2010
• Architecture - Changelogs
  A '''changelog''' is a log of data or metadata changes. In general, these will track filesystem operations conveyed via o ...cenario:''' || external database is kept up to date with global filesystem metadata changes
  16 KB (2,263 words) - 13:58, 22 January 2010
• Architecture - ZFS for Lustre
  ...advantages in file systems that store data on separate block devices from metadata. Some users of Lustre already place the journal on a separate device. ...he block allocator would choose a metadata class vdev if it was allocating metadata and an file-data class if it was allocating for file data. See Jeff Bonwic
  7 KB (1,243 words) - 14:26, 22 January 2010
• Architecture - Feature FS Replication
  ...r. This article does not address replication in the presence of clustered metadata. ...for (i) ldiskfs (ii) Lustre 1.8 (ldiskfs with MDS&OSS) (iii) Lustre 1.10 (new MDS with OSD based fids)
  28 KB (4,289 words) - 11:40, 21 January 2010
• Lustre Project List
  ...Lustre kernel patches to allow Lustre servers to be more easily ported to new kernels, and to be built against vendor kernels without changing the vendor |fallocate() API
  11 KB (1,762 words) - 09:25, 9 May 2013
• Architecture - Migration (2)
  Migration is a process of data and metadata moving within one cluster (one namespace) as well as to/from external non-L * '''IMP1''' all IO involving Lustre servers uses client API (exploit existing locking and sync '''LLITE''' infrastructure)
  8 KB (1,123 words) - 14:17, 22 January 2010
• Subsystem Map
  '''NOTE''': An updated subsystem map, with links to Doxygen-generated API documentation and other documentation, is available in the [http://wiki.lus ...port which is used throughout LNET, Lustre, and associated utilities. This API defines a portable runtime environment that is implemented consistently on
  51 KB (8,203 words) - 06:28, 11 April 2010
• Architecture - HSM Migration
  ; I/O request : This term groups read requests, write requests and other metadata accesses like truncate or unlink. ...has been removed by Lustre after being copied to the HSM. The MDT retains metadata info for the file.
  25 KB (3,874 words) - 14:12, 22 January 2010
• Architecture - Security
  avoid this by using existing API’s as much as possible, API’s for accessing such data for ordinary users.
  52 KB (8,446 words) - 14:23, 22 January 2010
• Change Log 1.6
  ...d transparently, but releases older than 1.6.6/1.8.0 don't understand this new format. The automatic format conversion can be avoided by running the follo A new Lustre ADIO driver is available for MPICH2-1.0.7.
  166 KB (24,668 words) - 06:38, 22 February 2010