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Parallel filesystem which schedules simultaneous file requests to mutually exclusive sets of OSSs

My environment is RHEL based, interconnect is infiniband. I have some experience with Lustre. What i want to know is: Is there a parallel file-system, where if simultaneous write request arrive, ...
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1answer
253 views

Beowulf cluster storage setup [closed]

I'm a Computer Engineering student working on a project with a Verari blade cluster, a bit outdated for today standards. I had acquired some Unix experience but I'm not an expert at all. This Verari ...
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283 views

Change the Hard Drive in RAID using tw_cli while lustre file system is mounted

I've setup RAID-5 array disk, but recently one of the Hard drives is reallocating excessive sectors: (Reallocated Sectors = 323) # tw_cli /c0/p1 show all /c0/p1 Status = OK /c0/p1 Model = ...
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Lustre OST physical volume failure

What happens when the physical volume of an OST is irrecoverably lost? What data is lost? Only the data stored on this OST, or everything? And, if the first is true, how can one control what data is ...
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125 views

Mongodb over Lustre?

I need to install a mongodb instance with a lot of data storage. We have a Lustre FS with hundreds of terabytes, but when monogdb start show me this error: Mon Jul 15 12:06:50.898 [initandlisten] ...
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256 views

Are snapshots and clones filesystem-wide in ZFS-backed Lustre clusters

My goal is to find a distributed filesystem on Linux that supports ZFS-like lightweight snapshots and snapshot clones. This StackOverflow question expresses what I'm looking for pretty well. I'm ...
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45 views

How do we configure Lustre to block client requests when under load, rather than failing?

We are using Lustre in a cluster with approximately 200TB of storage, 12 Object Storage Targets (that connect to a DDN storage system using QDR Infiniband), and roughly 160 quad and 8-core compute ...
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1answer
188 views

MySQL files on Lustre?

Our MySQL installation stores several Tb of data that doesn't get accessed too often. Over the next six months we're going to be moving to a Lustre based system for much of our data storage and Im ...
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461 views

Lustre - issues with simple setup

Issue: I'm trying to assess the (possible) use of Lustre for our group. To this end I've been trying to create a simple system to explore the nuances. I can't seem to get past the 'llmount.sh' test ...
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1answer
258 views

What makes Lustre faster and more scalable than NFS?

I have read in various places (e.g. here and here) that NFS' I/O performance does not scale, while Lustre's does, and that Lustre can deliver better I/O rates in general. There seem to be various ...
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1answer
302 views

Which is the fastest way to move 1Petabyte from one storage to a new one?

First of all, thanks for reading, and sorry for asking something related to my job. I understand that this is something that I should solve by myself but as you will see its something a bit difficult. ...