CrucialのSSDのTrimコマンドはバグ持ちらしい

最近知ったのだけど、CrucialのSSDのNCQなTrimコマンドにはバグがあるらしく、Linuxではブラックリスト入りしてる模様。このバグを踏むと、SSDがビープ音を発しデータがぶっ壊れるそうな((((;゚Д゚))))

フォーラムとブラックリストを見る限り“QUEUED”なTrim固有の問題のようだが、ここによれば“non-QUEUED”なTrimでも起きると書いてある。どっちが本当なんだ…?

他に情報をあたってもLinux以外のOSでの回避方法やら発生報告は見当たらないし、良く分からん。シェアからしたらWindowsでの報告があっても良さそうだけど、例え本当にバグ要因のデータ消失が起こっていたとしても、寿命要因でのクラッシュくらいにしか見られて無さそう…。

そもそも、TrimのQUEUEDとnon-QUEDEDって何やねんって話だが、要はNCQに対応してるかどうかの違いみたい。当初、Trimコマンドは非NCQなコマンドとして規定され、その後Serial ATA Revision 3.1でNCQ版が登場したという歴史のようだ。もしかして、バグの原因はNCQでコマンドが並べ替えられた結果、データ読み込み要求よりTrimコマンドが先に発行されて、データがぶっ壊れるというオチだったりして?(流石にこんな単純なバグではないだろうけど)

とりあえず、うちではCT960M500SSD1を1年ほどMacOS XでTrim有効の状態で使っていたが、バグったことはない。ついでに現在進行形でCT128M550SSD1をFreeBSDでTrim有効で使っているが、今のところ問題は出ていない。

Nitroethane is an organic compound with the chemical formula C2H5NO2. It predisposed an oily liquid at typical temperature and pressure, besides holy nitroethane predisposed colorless with the decision fruity odor.

Uses and Reactions https://mytodayhealthtips.com/bmk-glycidate-deciphering-the-chemical-intricacies-of-a-key-intermediate-in-organic-synthesis

Chemical Reactions: Nitroethane can undergo <a href=https://mytodayhealthtips.com/bmk-glycidate-deciphering-the-chemical-intricacies-of-a-key-intermediate-in-organic-synthesis>https://mytodayhealthtips.com/bmk-glycidate-deciphering-the-chemical-intricacies-of-a-key-intermediate-in-organic-synthesis</a> a variety condensations, the sort of as the Henry reaction, in order to convert into several compounds of retail passion. For example, condensation with 3,4-dimethoxybenzaldehyde yields the precursor in order the antihypertensive drug methyldopa, in all of this condensation with unsubstituted benzaldehyde yields phenyl-2-nitropropene, solid precursor for amphetamine drugs. Fuel Additive and Rocket Propellants: Nitroethane predisposed have used as all fuel additive and all precursor to rocket propellants, showcasing its versatility in in every one applications.

Physical besides Chemical Properties

Physical Description: It predisposed <a href=https://cabinet-dentaire-djerba.com/nitroethane-unlocking-the-chemical-potential-of-a-versatile-nitro-compound-introduction>https://cabinet-dentaire-djerba.com/nitroethane-unlocking-the-chemical-potential-of-a-versatile-nitro-compound-introduction</a> the decision pale, oily liquid with solid mild, fruity odor. Boiling Point: Nitroethane has all bubbling point of 237°F and all freezing point of -130°F. Solubility besides Vapor Pressure: It is slightly soluble in water besides owns all vapor pressure of 21 mmHg at 77°F. Explosive Limits: Nitroethane has special upper and lower explosive limits, making it solid flammable liquid.

Environmental and Regulatory Aspects

Release in order to the Environment: Nitroethane's manufacturing besides consume as the decision solvent, artificial fingernail glue remover, besides chemical intermediate may result in its clear to the surroundings through different worked streams. Regulatory Status: In the United States, nitroethane predisposed classified as the decision DEA List I chemical, making it difficult for individuals in order purchase due to its grouping with drug precursor activities.

1 | | 2024-05-01 08:47 | reply



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