[B! storage] kazuhookuã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

kazuhooku id:kazuhooku

storageã«é–¢ã™ã‚‹kazuhookuã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (11)

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iSCSI Initiatorã®ã‚¿ã‚¤ãƒ ã‚¢ã‚¦ãƒˆè¨å®š at nkjmkzk.net
Virtualization, Operating System, Storage, Cloud ComputingLinuxç’°å¢ƒã®iscsi-initiator-utilsã‚’ç”¨ã„ãŸéš›ã«é‡è¦ã¨ãªã‚‹ã‚¿ã‚¤ãƒ ã‚¢ã‚¦ãƒˆé–¢é€£ã®è¨å®šã«ã¤ã„ã¦ã€‚ ä¿¡é ¼æ€§ã®é«˜ã„ã‚·ã‚¹ãƒ†ãƒ ã§ã¯å½“ç„¶iSCSIã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã¸ã®æŽ¥ç¶šã‚‚å†—é•·åŒ–ã™ã‚‹ã¨ã„ã†è¦ä»¶ãŒã‚ã‚Šã¾ã™ã€‚æ±Žç”¨çš„ãªå®Ÿè£…ã ã¨device-mapper-multipathã‚’ä½¿ã£ã¦ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®éšœå®³ã«å¯¾ã—ã¦ã®å†—é•·æ§‹æˆã§ã¨ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ã¾ãŸã€Oracleã®ASMã‚’ä½¿ã£ãŸStorage GRIDæ§‹æˆã§ã¯è¤‡æ•°ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã‚’ã‚¹ãƒˆãƒ©ã‚¤ãƒ”ãƒ³ã‚°ï¼†ãƒŸãƒ©ãƒ¼ãƒªãƒ³ã‚°ã—ã€ä¾‹ãˆã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ãŒçä½“ã”ã¨ãƒ‘ãƒ¯ãƒ¼ãƒ€ã‚¦ãƒ³ã—ã¦ã‚‚ã‚ªãƒ³ãƒ©ã‚¤ãƒ³ã§å‡¦ç†ã‚’ç¶™ç¶šã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ã“ã®Storage GRIDæ§‹æˆã§é‡è¦ãªã®ãŒiSCSI Initiatorã®ã‚¿ã‚¤ãƒ ã‚¢ã‚¦ãƒˆè¨å®šã§ã™ã€‚ iSCSIã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã¸ã®æŽ¥ç¶šæ€§ã«ä¸å…·åˆãŒç™ºç”Ÿ
kazuhooku 2010/08/17
storage

administration
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FreeBSD 8/amd64ã§ZFSã‚’ä½¿ã†ã¨ãã®ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ - å·¥å¤«ã¨è¶£å‘ã¨åˆ†åˆ¥ã¨ã€‚
FreeBSDã«ãŠã‘ã‚‹ZFSã®ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°è³‡æ–™ã¨ã—ã¦ã€ã¾ãšè¦‹ã‚‹ã¹ãã¯ZFS Tuning Guideã ã¨æ€ã†ãŒã€ã“ã‚Œã«ã‚ˆã‚Œã°ã€ã“ã¨FreeBSD 8/amd64ã«é–¢ã—ã¦ã¯ç‰¹ã«è¨å®šä¸è¦ã§ã‚ã‚‹ã‚ˆã†ã«èªã‚ã‚‹ã€‚ ã—ã‹ã—ã€ZFSã¯é«˜è² è·ã«ãªã‚‹ã¨kmemã‚’æ¿€ã—ã„å‹¢ã„ã§æ¶ˆè²»ã™ã‚‹ã®ã§ã€ç‰¹ã«å¤šæ©Ÿèƒ½ã‚µãƒ¼ãƒã¨ã—ã¦ä½¿ã£ã¦ã„ã‚‹å ´åˆã¯ã€é©åˆ‡ãªè¨å®šã§kmemã®æ¶ˆè²»ã‚’æŠ‘ãˆã‚‹å¿…è¦ãŒã‚ã‚‹ã€‚é€šå¸¸ã®åˆ©ç”¨ã§ã¯å•é¡Œãªãã¨ã‚‚ã€bonnie++ãªã©ã§ã‚¹ãƒˆãƒ¬ã‚¹ã‚’ã‹ã‘ã‚‹ã¨ç°¡å˜ã«è½ã¡ã¦ã—ã¾ã†ã€‚ 8GBã®ãƒ¡ãƒ¢ãƒªã‚’ç©ã‚“ã æ‰‹å…ƒã®ã‚µãƒ¼ãƒã¯ã€ä»¥ä¸‹ã®ã‚ˆã†ãªè¨å®šï¼ˆ/boot/loader.confï¼‰ã«ã—ãŸã¨ã“ã‚ã€ç›¸å½“ã®è² è·ã«ã‚‚è€ãˆã‚‰ã‚Œã‚‹ã‚ˆã†ã«ãªã£ãŸã€‚ vm.kmem_size="1536M" vm.kmem_size_max="1536M" vfs.zfs.arc_min="128M" vfs.zfs.arc_max="512M"
kazuhooku 2010/04/15
freebsd

storage
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ZFSTuningGuide - FreeBSD Wiki
See also: Solaris: ZFS Evil Tuning Guide, loader.conf(5), sysctl(8). ZFS Tuning Guide OpenZFS documentation recommends a minimum of 2GB of memory for ZFS; additional memory is strongly recommended when the compression and deduplication features are enabled. Depending on your workload, it may be possible to use ZFS on systems with less memory, but it requires careful tuning to avoid panics from mem
kazuhooku 2010/04/14
freebsd

storage
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https://people.freebsd.org/~rse/iscsi/iscsi.txt
kazuhooku 2010/04/14
freebsd

storage
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ã‚µãƒ¼ãƒä»®æƒ³åŒ–ç’°å¢ƒã§ã®ãŠè–¦ã‚ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸æ§‹æˆ at nkjmkzk.net
A Place to discuss Oracle VM, Linux and Other Great Software.ã‚µãƒ¼ãƒä»®æƒ³åŒ–ç’°å¢ƒã§ã¯ã€Œãƒªã‚½ãƒ¼ã‚¹ãƒ—ãƒ¼ãƒ«ã€ã¨ã„ã†æ¦‚å¿µã‚’å®Ÿç¾ã™ã‚‹ãŸã‚ã«å…±æœ‰ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸æ§‹æˆãŒå¤šãæŽ¡ç”¨ã•ã‚Œã¾ã™ã€‚ã—ã‹ã—ã€ãã‚‚ãã‚‚ç¾åœ¨ã®CPUæ€§èƒ½ã¨DISK I/Oæ€§èƒ½ã‚’é‘‘ã¿ã‚Œã°ã€ãã‚‚ãã‚‚DISK I/Oæ€§èƒ½ã¯CPUæ€§èƒ½ã®é€²åŒ–ã«è¿½ã„ã¤ã„ã¦ãŠã‚‰ãšã€å…±æœ‰ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸æ§‹æˆã¨ã™ã‚Œã°è¿½ã„æ‰“ã¡ã‚’ã‹ã‘ã‚‹ã‚ˆã†ã«ãã“ãŒãƒœãƒˆãƒ«ãƒãƒƒã‚¯ã¨ãªã‚Šã¾ã™ã€‚å¤šãã®ç’°å¢ƒã§ã¯ã‚µãƒ¼ãƒä»®æƒ³åŒ–ç’°å¢ƒã§ã¯ã€Œå…±æœ‰ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸åž‹å‰æã€‚ã—ã‹ã—ã“ã‚Œã¾ã§ã®ä½•å€ã‚‚ã®I/Oæ€§èƒ½ãŒå¿…è¦ã€ã¨ã„ã†è¦ä»¶ã«å¯¾å¿œã™ã‚‹ãŸã‚ã€ãƒŸãƒ‰ãƒ«ã€œãƒã‚¤ã‚¨ãƒ³ãƒ‰ã®ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸è£…ç½®ã‚’æŽ¡ç”¨ã™ã‚‹ã¨ã„ã†é¸æŠžã‚’è¡Œã£ã¦ã„ã¾ã™ã€‚ãã®çµæžœåˆæœŸå°Žå…¥è²»ç”¨ãŒé«˜ä¾¡ãªã®ã¯ã‚‚ã¡ã‚ã‚“ã§ã™ãŒã€ãã®ã‚ã¨ã‚‚èŽ«å¤§ãªä¿å®ˆè²»ã‚’æ”¯æ‰•ã†ã“ã¨ã«ãªã‚Šã¾ã™ã€‚ãã—ã¦æ‹¡å¼µã§ãã‚‹ã‚‚ã®ã®ã€æ‹¡å¼µã™ã‚‹ãŸã‚ã®ãƒ‘ãƒ¼ãƒ„ãŒã¾ãŸé«˜ä¾¡ã€ã¨ã„ã†ã‚¹ãƒ‘ã‚¤ãƒ©ãƒ«ã«é™¥
kazuhooku 2010/02/07
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storage
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kumofs kumo fast storage å¤æ©‹ è²žä¹‹ è‡ªå·±ç´¹ä»‹ â€¢ å¤æ©‹ è²žä¹‹ï¼ˆãµã‚‹ã¯ã— ã•ã ã‚†ãï¼‰ â€¢ ç‘æ³¢å¤§å¦ æƒ…å ±å¦é¡ž3å¹´ â€¢ id:viverâ€ƒ â€¢ frsyuki@twitter è‡ªå·±ç´¹ä»‹ ãƒ‡ã‚£ã‚¹ã‚¯ãƒ¬ã‚¹ãƒ–ãƒ¼ãƒˆã‚·ã‚¹ãƒ†ãƒ ãƒšã‚¢ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚° ï¿½ï¿½
kumofs kumo fast storage å¤æ©‹ è²žä¹‹ è‡ªå·±ç´¹ä»‹ â€¢ å¤æ©‹ è²žä¹‹ï¼ˆãµã‚‹ã¯ã— ã•ã ã‚†ãï¼‰ â€¢ ç‘æ³¢å¤§å¦ æƒ…å ±å¦é¡ž3å¹´ â€¢ id:viverâ€ƒ â€¢ frsyuki@twitter è‡ªå·±ç´¹ä»‹ ãƒ‡ã‚£ã‚¹ã‚¯ãƒ¬ã‚¹ãƒ–ãƒ¼ãƒˆã‚·ã‚¹ãƒ†ãƒ ãƒšã‚¢ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚° æ”¯æ´ã‚·ã‚¹ãƒ†ãƒ å¤šäººæ•°éŸ³å£°ãƒãƒ£ãƒƒãƒˆã‚·ã‚¹ãƒ†ãƒ kumofs â€¢ èƒŒæ™¯ â€¢ kumo fast storageæ¦‚è¦ â€¢ ä¿è¨¼ç¯„å›² â€¢ æ€§èƒ½ï¼ˆç›®å®‰ï¼‰ â€¢ ãƒŽãƒ¼ãƒ‰è¿½åŠ ä¸ã®å‹•ä½œ â€¢ MessagePack-RPCâ€ƒ èƒŒæ™¯ â€¢ ãˆã¨ã‚‰ã¼æ ªå¼ä¼šç¤¾ã®ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã§ï¼š â€¢ å°ã•ã„key-valueã‚’å¤§é‡ã«ä¿å˜ â€¢ è½ã¡ãªã„ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ â€¢ ã‚ãƒ£ãƒƒã‚·ãƒ¥ã§ã¯ãªãã¦æ°¸ç¶šåŒ–ã—ãŸã„ â€¢ ã‚µãƒ¼ãƒãƒ¼ã‚’è¶³ã™ã¨èªã¿ãƒ»æ›¸ãæ€§èƒ½ãŒå‘ä¸Š â€¢ å°Žå…¥ãƒ»é‹ç”¨ãŒæ¥½ kumo fast storage â€¢ key-valueã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ â€¢ Consistent Hashingã§åˆ†æ•£ â€¢ ãƒ¬ãƒ—
kazuhooku 2009/05/01
saas

dev

storage
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SanDiskã€SSDã®ãƒ©ãƒ³ãƒ€ãƒ ãƒ©ã‚¤ãƒˆæ€§èƒ½ã‚’æœ€å¤§100å€å‘ä¸Šã•ã›ã‚‹æŠ€è¡“
11æœˆ5æ—¥(ç¾åœ°æ™‚é–“)ç™ºè¡¨ ç±³SanDiskã¯5æ—¥(ç¾åœ°æ™‚é–“)ã€WinHECä¼šå ´ã«ãŠã„ã¦ã€SSDå‘ã‘ã®ãƒ•ãƒ©ãƒƒã‚·ãƒ¥ãƒ¡ãƒ¢ãƒªç”¨ãƒ•ã‚¡ã‚¤ãƒ«ç®¡ç†ã‚·ã‚¹ãƒ†ãƒ ã€ŒExtremeFFSã€ã‚’ç™ºè¡¨ã—ãŸã€‚ ExtremeFFSã§ã¯ã€ãƒšãƒ¼ã‚¸ãƒ™ãƒ¼ã‚¹ã®ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã§å‹•ä½œã—ã€ãƒ‡ãƒ¼ã‚¿ã®ç‰©ç†ä½ç½®ã¨è«–ç†ä½ç½®ã¨ã‚’å›ºå®šã•ã›ã‚‹å¿…è¦ãŒãªã„ã€‚ã¾ãŸã€1ã‚»ã‚¯ã‚¿åˆ†ã®ãƒ‡ãƒ¼ã‚¿ã‚’æ›¸ãè¾¼ã‚€éš›ã¯ã€ã‚‚ã£ã¨ã‚‚ä¾¿åˆ©ã§åŠ¹çŽ‡çš„ãªå ´æ‰€ã«ä¿å˜ã™ã‚‹ã€‚ã“ã‚Œã«ã‚ˆã‚Šã€SSDã®ãƒ©ãƒ³ãƒ€ãƒ ãƒ©ã‚¤ãƒˆæ€§èƒ½ã‚’æœ€å¤§100å€ã«ã¾ã§å‘ä¸Šã•ã›ã€åŒæ™‚ã«è€ä¹…æ€§èƒ½ã‚‚å‘ä¸Šã™ã‚‹ã¨ã„ã†ã€‚ ã“ã®ã»ã‹åŒæŠ€è¡“ã§ã¯ã€1ã¤1ã¤ã®NANDãƒãƒ£ãƒãƒ«ãŒç‹¬ç«‹ã—ã¦ã€æ›¸ãè¾¼ã¿ã‚„èªã¿è¾¼ã¿ã‚’è¡Œãªãˆã‚‹éžãƒ–ãƒãƒƒã‚ãƒ³ã‚°ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã‚„ã€ãƒ¦ãƒ¼ã‚¶ãƒ¼ã®è¡Œå‹•ãƒ‘ã‚¿ãƒ¼ãƒ³ã‚’å¦ç¿’ã—ã¦ãƒ‡ãƒ¼ã‚¿ã®é…ç½®ã‚’è¡Œãªã†æŠ€è¡“ã‚’ç››ã‚Šè¾¼ã‚“ã§ã„ã‚‹ã€‚ã“ã®æŠ€è¡“ã‚’æè¼‰ã—ãŸè£½å“ã¯2009å¹´ã«å‡ºè·ã•ã‚Œã‚‹è¦‹è¾¼ã¿ã€‚ ã¾ãŸã€åŒç¤¾ã¯SSDã¨HDDã®æ€§èƒ½ã‚’æ¯”è¼ƒã™ã‚‹æŒ‡æ¨™ã§ã‚ã‚‹ã€ŒvR PMã€ã‚„ã€å¯¿å‘½ã®æŒ‡æ¨™ã§
kazuhooku 2008/11/06
SanDiskã¯SSDå¾Œç™ºã ã‹ã‚‰ãªãã€‚åŸºæœ¬çš„ã«ã¯è¿½ã„ä¸Šã’ã‚‹ã‚ˆã£ã¦è©±ã ã‚ˆã

storage
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An Interview With Linus Torvalds: Linux and Git - Part 1 30 Years Of Linux
kazuhooku 2008/09/29
OpenBSDã«UBCãŒå…¥ã‚‹ã®ã¯2002å¹´

dev

unix

storage
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Freenix 2000 USENIX Annual Technical Conference Paper
UBC: An Efficient Unified I/O and Memory Caching Subsystem for NetBSD Chuck Silvers The NetBSD Project [email protected], https://www.netbsd.org/ Abstract This paper introduces UBC ("Unified Buffer Cache"), a design for unifying the filesystem and virtual memory caches of file data, thereby providing increased system performance. In this paper we discuss both the traditional BSD caching interfaces and
kazuhooku 2008/09/29
ã„ã¾ã©ã Unified ã˜ã‚ƒãªã„ OS ãŒæ®‹ã£ã¦ã‚‹ã®ã‹ãªã orz

dev

unix

storage
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Wear leveling - Wikipedia
Wear leveling (also written as wear levelling) is a technique[1] for prolonging the service life of some kinds of erasable computer storage media, such as flash memory, which is used in solid-state drives (SSDs) and USB flash drives, and phase-change memory. There are several wear leveling mechanisms that provide varying levels of longevity enhancement in such memory systems.[2][3] The term preemp
kazuhooku 2008/09/27
dev

storage
ãƒªãƒ³ã‚¯
ãƒ•ãƒ©ãƒƒã‚·ãƒ¥ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã€Œï¼¦ï½•ï½‡ï½•ï½…ã€ - æŠ€è¡“æƒ…å ± ãƒ•ãƒ©ãƒƒã‚·ãƒ¥ãƒ»ãƒ¡ãƒ¢ãƒªã®åŸºç¤Žã¨é›»æºéšœå®³ã«å¼·ã„ãƒ•ã‚¡ã‚¤ãƒ«ãƒ»ã‚·ã‚¹ãƒ†ãƒ ã®æ§‹ç¯‰ - ã‚¦ã‚§ã‚¢ãƒ»ãƒ¬ãƒ™ãƒªãƒ³ã‚°
ãƒ•ãƒ©ãƒƒã‚·ãƒ¥ã¯ãƒ‡ãƒã‚¤ã‚¹ã®ä»•æ§˜ã¨ã—ã¦æ›¸ãæ›ãˆã«å¯¾ã—ã¦ä¸€å®šã®ä¸è‰¯ãƒ–ãƒãƒƒã‚¯æ•°ã®ç¯„å›²å†…ã§10ä¸‡å›žã¨ã„ã†å›žæ•°ã®ä¸Šé™ãŒã‚ã‚Šã¾ã™ï¼Ž è¨€ã„æ›ãˆã‚‹ã¨ï¼Œ10ä¸‡å›žã®æ›¸ãæ›ãˆã«å¯¾ã—ã¦ï¼Œãƒ–ãƒãƒƒã‚¯ä¸è‰¯çŽ‡ã¯ç´„2%ä»¥ä¸‹ã§ã‚ã‚‹ã“ã¨ã‚’ãƒ‡ãƒã‚¤ã‚¹ãƒ»ãƒ¡ãƒ¼ã‚«ãŒä¿è¨¼ã—ã¦ã„ã‚‹ã“ã¨ã«ãªã‚Šã¾ã™ï¼Ž é€šå¸¸ã®è¨è¨ˆã§ã¯ï¼Œãƒ•ãƒ©ãƒƒã‚·ãƒ¥ã‚’æè¼‰ã—ãŸæ©Ÿå™¨è‡ªèº«ã®è£½å“å¯¿å‘½ã¨ãƒ•ãƒ©ãƒƒã‚·ãƒ¥ã«å¯¾ã™ã‚‹æ›¸ãæ›ãˆé »åº¦ã‚’è€ƒæ…®ã—ã¦ ã‚·ã‚¹ãƒ†ãƒ ã®ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ãƒ»ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ ã‚’çµ„ã¿ç«‹ã¦ã¾ã™ï¼Ž ãã“ã§ç”¨ã„ã‚‰ã‚Œã‚‹ã‚¦ã‚§ã‚¢ãƒ»ãƒ¬ãƒ™ãƒªãƒ³ã‚°ï¼ˆå›³4ï¼‰ã¨ã¯ï¼Œãƒ•ãƒ©ãƒƒã‚·ãƒ¥ã®æ›¸ãæ›ãˆæ“ä½œãŒç‰¹å®šã®ãƒ–ãƒãƒƒã‚¯ã«é›†ä¸ã—ã¦ï¼Œ ãã®ãƒ–ãƒãƒƒã‚¯ãŒæ¥µç«¯ã«æ¶ˆè€—ã—ã¦å¯¿å‘½ãŒå°½ãã‚‹ã“ã¨ã‚’é¿ã‘ã‚‹ãŸã‚ã«å®Ÿæ–½ã•ã‚Œã‚‹å‡¦ç†ã§ã™ï¼Žã‚‚ã£ã¨ã‚‚ã‚ªãƒ¼ã‚½ãƒ‰ãƒƒã‚¯ã‚¹ãªæ–¹æ³•ã¯ï¼Œãƒ–ãƒãƒƒã‚¯ã”ã¨ã®æ›¸ãæ›ãˆå›žæ•°ã‚’ç®¡ç†ã—ã¦ï¼Œ æ›¸ãæ›ãˆå¯¾è±¡ã®ãƒ–ãƒãƒƒã‚¯ã‚’é¸æŠžã™ã‚‹æ™‚ç‚¹ã§ï¼Œã‚«ã‚¦ãƒ³ã‚¿ã®å€¤ã®å°‘ãªã„ãƒ–ãƒãƒƒã‚¯ã‚’é¸ã³å‡ºã™ã‚„ã‚Šæ–¹ã§ã™ï¼Ž ã‚¦ã‚§ã‚¢ãƒ»ãƒ¬ãƒ™ãƒªãƒ³ã‚°æ©Ÿèƒ½ã‚’çµ„ã¿è¾¼ã‚€ã“ã¨ã§ï¼Œãƒ•ãƒ©ãƒƒã‚·ãƒ¥å…¨ä½“ã®å¯¿
kazuhooku 2008/09/27
cold block ã‹ã

storage
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