The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
À medida que o armazenamento baseado em flash NAND foi estabelecido, uma camada de tradução flash (FTL) ficou encarregada de mapear endereços de dados na memória flash NAND. Muitos FTLs implementaram vários esquemas de mapeamento, mas a quantidade de dados de mapeamento depende do nível de mapeamento. No entanto, o FTL deve contemplar a consistência do mapeamento, independentemente da quantidade de dados de mapeamento que residem no armazenamento. Além disso, o custo de recuperação pela inconsistência precisa ser considerado para um tempo de reinicialização do armazenamento mais rápido. Esta carta propõe um novo método que melhora a consistência de um FTL de nível de mapeamento de página executando uma política de registro herdada. Além disso, o custo de recuperação dos mapeamentos de páginas também diminui. O novo método consiste em adotar um segmento virtualmente reduzido e desativar os logs de mapeamento de páginas montando e armazenando os segmentos. Este esquema de segmento já proporcionou ao armazenamento baseado em flash NAND integrado melhorar seu tempo de resposta em nosso estudo anterior. Além desse resultado melhorado, este novo plano maximiza a consistência do mapeamento de páginas e, portanto, melhora o custo de recuperação em comparação com o FTL de mapeamento de páginas legado.
Jung-Hoon KIM
Samsung Electronics Co., Ltd.
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Jung-Hoon KIM, "Rapid Recovery by Maximizing Page-Mapping Logs Deactivation" in IEICE TRANSACTIONS on Information,
vol. E104-D, no. 6, pp. 885-889, June 2021, doi: 10.1587/transinf.2020EDL8141.
Abstract: As NAND flash-based storage has been settled, a flash translation layer (FTL) has been in charge of mapping data addresses on NAND flash memory. Many FTLs implemented various mapping schemes, but the amount of mapping data depends on the mapping level. However, the FTL should contemplate mapping consistency irrespective of how much mapping data dwell in the storage. Furthermore, the recovery cost by the inconsistency needs to be considered for a faster storage reboot time. This letter proposes a novel method that enhances the consistency for a page-mapping level FTL running a legacy logging policy. Moreover, the recovery cost of page mappings also decreases. The novel method is to adopt a virtually-shrunk segment and deactivate page-mapping logs by assembling and storing the segments. This segment scheme already gave embedded NAND flash-based storage enhance its response time in our previous study. In addition to that improved result, this novel plan maximizes the page-mapping consistency, therefore improves the recovery cost compared with the legacy page-mapping FTL.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.2020EDL8141/_p
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@ARTICLE{e104-d_6_885,
author={Jung-Hoon KIM, },
journal={IEICE TRANSACTIONS on Information},
title={Rapid Recovery by Maximizing Page-Mapping Logs Deactivation},
year={2021},
volume={E104-D},
number={6},
pages={885-889},
abstract={As NAND flash-based storage has been settled, a flash translation layer (FTL) has been in charge of mapping data addresses on NAND flash memory. Many FTLs implemented various mapping schemes, but the amount of mapping data depends on the mapping level. However, the FTL should contemplate mapping consistency irrespective of how much mapping data dwell in the storage. Furthermore, the recovery cost by the inconsistency needs to be considered for a faster storage reboot time. This letter proposes a novel method that enhances the consistency for a page-mapping level FTL running a legacy logging policy. Moreover, the recovery cost of page mappings also decreases. The novel method is to adopt a virtually-shrunk segment and deactivate page-mapping logs by assembling and storing the segments. This segment scheme already gave embedded NAND flash-based storage enhance its response time in our previous study. In addition to that improved result, this novel plan maximizes the page-mapping consistency, therefore improves the recovery cost compared with the legacy page-mapping FTL.},
keywords={},
doi={10.1587/transinf.2020EDL8141},
ISSN={1745-1361},
month={June},}
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TY - JOUR
TI - Rapid Recovery by Maximizing Page-Mapping Logs Deactivation
T2 - IEICE TRANSACTIONS on Information
SP - 885
EP - 889
AU - Jung-Hoon KIM
PY - 2021
DO - 10.1587/transinf.2020EDL8141
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E104-D
IS - 6
JA - IEICE TRANSACTIONS on Information
Y1 - June 2021
AB - As NAND flash-based storage has been settled, a flash translation layer (FTL) has been in charge of mapping data addresses on NAND flash memory. Many FTLs implemented various mapping schemes, but the amount of mapping data depends on the mapping level. However, the FTL should contemplate mapping consistency irrespective of how much mapping data dwell in the storage. Furthermore, the recovery cost by the inconsistency needs to be considered for a faster storage reboot time. This letter proposes a novel method that enhances the consistency for a page-mapping level FTL running a legacy logging policy. Moreover, the recovery cost of page mappings also decreases. The novel method is to adopt a virtually-shrunk segment and deactivate page-mapping logs by assembling and storing the segments. This segment scheme already gave embedded NAND flash-based storage enhance its response time in our previous study. In addition to that improved result, this novel plan maximizes the page-mapping consistency, therefore improves the recovery cost compared with the legacy page-mapping FTL.
ER -