DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Won, Youjip | - |
dc.contributor.advisor | 원유집 | - |
dc.contributor.author | Yoo, Seung Won | - |
dc.date.accessioned | 2023-06-26T19:34:19Z | - |
dc.date.available | 2023-06-26T19:34:19Z | - |
dc.date.issued | 2023 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1032906&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/309956 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 전기및전자공학부, 2023.2,[iii, 34 p. :] | - |
dc.description.abstract | In this work, we present a new order-preserving mechanism for software RAID, called Order-Preserving All Flash Array, O-AFA. O-AFA is designed for barrier-compliant devices in a RAID system. Our contributions are four-fold. First, Barrier Stripe is employed to preserve the storage order in individual storage devices in the storage array. The cache barrier command stripe is dispatched to a flash array. Second, Inter-stripe epoch management is employed to follow the ordering constraint imposed by the filesystem. When the Linux MD dispatches the current stripe, it receives the information on whether there is a remaining write request among un-dispatched stripes. Based on this information, the Linux MD converts the current stripe to dispatch to the Barrier Stripe or not. Third, we use a shadow-page aware dispatch mechanism to replace the transfer overhead with the dispatch overhead. It brings the performance gain for the IO handling by 19%. Fourth, we use a Stripe-Width Checksum to guarantee inter-disk atomicity. The new order-preserving mechanism of O-AFA brings 69% performance gain at varmail and 80% for OLTP-Insert on MySQL. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Software RAID▼aOperating Systems▼aLinux Kernels | - |
dc.subject | 소프트웨어 레이드▼a운영 체제▼a리눅스 커널 | - |
dc.title | Designing order preserving all flash array | - |
dc.title.alternative | 순서 보장 플래시 디스크 어레이 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :전기및전자공학부, | - |
dc.contributor.alternativeauthor | 유승원 | - |
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