Keyword Analysis & Research: lustre flr
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File Level Replication High Level Design - Lustre Wiki
File Level Redundancy Solution Architecture - Lustre Wiki
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Category:FLR - Lustre Wiki
Prior to the File Level Redundancy (FLR) feature, availability and resilience of a Lustre file system relied entirely on the availability and resilience of its backend …
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[lustre-devel] [PATCH 128/622] lustre: flr: add 'nosync ...
From: James Simmons <[email protected]> To: [email protected] Subject: [lustre-devel] [PATCH 128/622] lustre: flr: add 'nosync' flag for FLR mirrors Date: Thu, 27 Feb 2020 16:09:56 -0500 [thread overview] Message-ID: <[email protected]> () In-Reply-To: <[email protected]> From: Bobi Jam …
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[lustre-devel] [PATCH 504/622] lustre: flr: avoid reading ...
From: James Simmons <[email protected]> To: [email protected] Subject: [lustre-devel] [PATCH 504/622] lustre: flr: avoid reading unhealthy mirror Date: Thu, 27 Feb 2020 16:16:12 -0500 [thread overview] Message-ID: <[email protected]> () In-Reply-To: <[email protected]> From: Bobi Jam …
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Policy Engine Proposal - Lustre Wiki
Similar to erasure coded striping, FLR needs to get a list of files being written recently so that policy engine can launch a series of jobs to resync them. Lustre Modules As we can see from the above sections, policy engine depends on how much information it can get from Lustre file system as input.
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How does Lustre File Level Redundancy ( FLR ) work?
With Lustre File Level Redundancy (FLR), a user or administrator can store the same file data on multiple independent OSTs so that these files can avoid a single point of failure and transparently tolerate short- or long-term storage unavailability with lower latency than HA failover, or permanent loss of an OST filesystem.
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What kind of file system does lustre use?
Lustre includes an enhanced version of the ext4 file system, called ldiskfs, with additional functional and performance enhancements. It is also possible to use the OpenZFS file system to increase the scalability and robustness of the back-end file system. Why did Lustre choose ext4 for the backing filesystem?
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Can a lustre system cause a data loss?
However, no matter how good the underlying storage hardware is, applications using Lustre still can experience failures (short- or long-term data unavailability, or total data loss) due to hardware errors or OST filesystem corruption.
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Is it possible to make lustre more reliable?
However, despite the expense and complexity of these storage systems, storage failures still occur and Lustre cannot currently be more reliable than the individual storage and servers components on which it is based.
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