Beating the I/O bottleneck: a case for log-structured virtual disks
Beating the I/O bottleneck: a case for log-structured virtual disks
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DOI：
10.1145/3492321.3524271
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发表时间：
2022-03
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通讯作者：
Mohammad Hossein Hajkazemi;Vojtech Aschenbrenner;Mania Abdi;E. Kaynar;Amin Mossayebzadeh;Orran Krieger;Peter Desnoyers
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作者：
Mohammad Hossein Hajkazemi;Vojtech Aschenbrenner;Mania Abdi;E. Kaynar;Amin Mossayebzadeh;Orran Krieger;Peter Desnoyers
随着SSD在本地存储中的占主导地位，当今的网络安装的虚拟磁盘无法再提供竞争性能。我们提出了一个对数结构化的虚拟磁盘（LSVD），该磁盘将在缓存和存储层上伴随着对数结构的方法，以在类似于S3的存储的顶部提供虚拟磁盘。 CACHE和后端商店都具有订单保存，使LSVD能够在失败时提供强大的一致性保证。我们的原型表明，该方法保留了虚拟磁盘的所有优势，同时提供了与常用的虚拟磁盘相比，提供了巨大的性能改进，而且相同的磁盘与不一致的（即不安全）本地缓存相同。
With the increasing dominance of SSDs for local storage, today's network mounted virtual disks can no longer offer competitive performance. We propose a Log-Structured Virtual Disk (LSVD) that couples log-structured approaches at both the cache and storage layer to provide a virtual disk on top of S3-like storage. Both cache and backend store are order-preserving, enabling LSVD to provide strong consistency guarantees in case of failure. Our prototype demonstrates that the approach preserves all the advantages of virtual disks, while offering dramatic performance improvements over not only commonly used virtual disks, but the same disks combined with inconsistent (i.e. unsafe) local caching.