Changes between Version 49 and Version 50 of Other/Summer/2023/Distributed


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Timestamp:
Jul 10, 2023, 6:44:33 PM (12 months ago)
Author:
krs227
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  • Other/Summer/2023/Distributed

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    5354**Week Resources**
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    7374The RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks, while the MDADM is a Linux utility used to create, manage, as well as monitor software-based RAID devices. We used the concepts that we then learnt in order to test MDRAID as well as ZFS for disk failure. We did the following: exported /scratch file system (RAID 5) which is built on 3 drives from the nodes to our LXC containers, mounting it there in general. We then checked the I/O performance on /scratch on the file server, and the node, and we finally checked the I/O performance of the NFS mounted file system. Here are some diagrams with some of the statistics of the comparison between local vs remote performance as well as normal versus degraded performance.
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     76[[Image(WINLAB presentation week 6_19 (1).jpg)]]
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     78[[Image(WINLAB presentation week 6_19 (2).jpg)]]
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    7580We used the DD command to do the I/O scripting. After that, we captured an installation image on FOG after Debian 12 was installed in node03, and we learnt about the GRUB software for recovery purposes.