Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems最新文献_第2页

Understanding configuration dependencies of file systems 了解文件系统的配置依赖关系

Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems Pub Date : 2022-06-27 DOI: 10.1145/3538643.3539756

Tabassum Mahmud, Duo Zhang, Om Rameshwar Gatla, Mai Zheng

引用次数: 6

What you can't forget: exploiting parallelism for zoned namespaces 您不能忘记的是:利用分区名称空间的并行性

Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems Pub Date : 2022-06-27 DOI: 10.1145/3538643.3539744

H. Bae, Jiseon Kim, Miryeong Kwon, Myoungsoo Jung

引用次数: 15

Wear leveling in SSDs considered harmful 被认为有害的ssd损耗均衡

Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems Pub Date : 2022-06-27 DOI: 10.1145/3538643.3539750

Ziyang Jiao, J. Bhimani, B. Kim

引用次数: 5

A principled approach for selecting block I/O traces 一种选择块I/O轨迹的原则性方法

Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems Pub Date : 2022-06-27 DOI: 10.1145/3538643.3539754

Omkar Desai, Seungmin Shin, Eunji Lee, B. Kim

引用次数: 1

When poll is more energy efficient than interrupt 当轮询比中断更节能时

Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems Pub Date : 2022-06-27 DOI: 10.1145/3538643.3539747

B. Harris, Nihat Altiparmak

引用次数: 1

When F2FS meets address remapping 当F2FS遇到地址重映射时

Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems Pub Date : 2022-06-27 DOI: 10.1145/3538643.3539755

Y. Lee, Jonghyeok Park, Jonggyu Park, Hyunho Gwak, Dongkun Shin, Y. Eom, Sang-Won Lee

引用次数: 1

Compaction-aware zone allocation for LSM based key-value store on ZNS SSDs 在ZNS ssd上基于键值存储的LSM的紧凑感知区域分配

Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems Pub Date : 2022-06-27 DOI: 10.1145/3538643.3539743

Hee-Rock Lee, Chang-Gyu Lee, Seungjin Lee, Youngjae Kim

{"title":"Compaction-aware zone allocation for LSM based key-value store on ZNS SSDs","authors":"Hee-Rock Lee, Chang-Gyu Lee, Seungjin Lee, Youngjae Kim","doi":"10.1145/3538643.3539743","DOIUrl":"https://doi.org/10.1145/3538643.3539743","url":null,"abstract":"Unlike traditional block-based SSDs, Zoned Namespace (ZNS) SSDs expose storage through the zoned block interface, completely eliminating the need for in-device garbage collection (GC) and relinquishing this responsibility to applications. As a result, application-aware data placement decisions give the opportunity for applications on the host to perform efficient GC. Meanwhile, RocksDB for ZNS SSD places data with similar invalidation times (lifetimes) in the same zone through ZenFS (a user-level file system) using the Lifetime-based Zone Allocation algorithm (LIZA), and minimizes the GC overhead of valid data copy when reclaiming a zone. However, LIZA, which allocates zones by predicting the lifetime of each SSTable according to the level of the hierarchical structure of the LSM-tree, is very inefficient in minimizing the write amplification (WA) problem due to inaccurate predictions of SSTable lifetimes. Instead, based on our observation that the deletion time of SSTables in the LSM-tree is solely determined by the compaction process, we propose a novel Compaction-Aware Zone Allocation algorithm (CAZA) that allows the newly created SSTables to be deleted together after merging in the future. CAZA is implemented in RocksDB's ZenFS and our extensive evaluations show that CAZA significantly reduces the WA overhead compared to LIZA.","PeriodicalId":159120,"journal":{"name":"Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127729402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

PiF

Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems Pub Date : 2022-06-27 DOI: 10.1007/978-1-4020-6754-9_12859

Myungjun Chun, Jaeyong Lee, Sanggu Lee, Myung-Seok Kim, Jihong Kim

引用次数: 0

Hello bytes, bye blocks: PCIe storage meets compute express link for memory expansion (CXL-SSD) Hello字节，bye块:PCIe存储满足内存扩展的计算express链路(CXL-SSD)

Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems Pub Date : 2022-06-27 DOI: 10.1145/3538643.3539745

Myoungsoo Jung

引用次数: 22

Rethinking block storage encryption with virtual disks 重新思考虚拟磁盘块存储加密

Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems Pub Date : 2022-05-31 DOI: 10.1145/3538643.3539748

Danny Harnik, O. Naor, Effi Ofer, Or Ozery

{"title":"Rethinking block storage encryption with virtual disks","authors":"Danny Harnik, O. Naor, Effi Ofer, Or Ozery","doi":"10.1145/3538643.3539748","DOIUrl":"https://doi.org/10.1145/3538643.3539748","url":null,"abstract":"Disk encryption today uses standard encryption methods that are length preserving and do not require storing any additional information with an encrypted disk sector. This significantly simplifies disk encryption management as the disk mapping does not change with encryption. On the other hand, it forces the encryption to be deterministic when data is being overwritten and it disallows integrity mechanisms, thus lowering security guarantees. Moreover, because the most widely used standard encryption methods (like AES-XTS) work at small sub-blocks of no more than 32 bytes, deterministic overwrites form an even greater security risk. Overall, today's standard practice forfeits some security for ease of management and performance considerations. This shortcoming is further amplified in a virtual disk setting that supports versioning and snapshots so that overwritten data remains accessible. In this work, we address these concerns and stipulate that especially with virtual disks, there is motivation and potential to improve security at the expense of a small performance overhead. Specifically, adding per-sector metadata to a virtual disk allows running encryption with a random initialization vector (IV) as well as potentially adding integrity mechanisms. We explore how best to implement additional per-sector information in Ceph RBD, a popular open-source distributed block storage with client-side encryption. We implement and evaluate several approaches and show that one can run AES-XTS encryption with a random IV at a manageable overhead ranging from 1%--22%, depending on the IO size.","PeriodicalId":159120,"journal":{"name":"Proceedings of the 14th ACM Workshop on Hot Topics in Storage and File Systems","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123676157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1