Linux下如何查看USB闪存的擦除块大小？
有人说 /proc/mtd 可能会有帮助，而对于我的 Centos7 服务器，没有这样的文件。
提前致谢。
2016 年 1 月 28 日更新：
下面是我的flashbench输出，有人能确认我的擦除块大小是否为4M吗？ （实际上，我的sdb是金士顿DTSE9G2 128G USB闪存。）
# ./flashbench -a /dev/sdb
sched_setscheduler: Operation not permitted
align 34359738368 pre 461µs on 584µs post 443µs diff 132µs
align 17179869184 pre 468µs on 598µs post 463µs diff 133µs
align 8589934592 pre 473µs on 598µs post 467µs diff 128µs
align 4294967296 pre 476µs on 602µs post 470µs diff 129µs
align 2147483648 pre 473µs on 599µs post 462µs diff 131µs
align 1073741824 pre 463µs on 601µs post 465µs diff 137µs
align 536870912 pre 463µs on 595µs post 469µs diff 129µs
align 268435456 pre 463µs on 581µs post 452µs diff 124µs
align 134217728 pre 467µs on 585µs post 454µs diff 125µs
align 67108864 pre 452µs on 580µs post 458µs diff 125µs
align 33554432 pre 471µs on 604µs post 463µs diff 137µs
align 16777216 pre 457µs on 588µs post 473µs diff 123µs
align 8388608 pre 459µs on 603µs post 471µs diff 138µs
align 4194304 pre 465µs on 569µs post 465µs diff 104µs
align 2097152 pre 467µs on 584µs post 473µs diff 114µs
align 1048576 pre 450µs on 579µs post 474µs diff 118µs
align 524288 pre 472µs on 581µs post 454µs diff 117µs
align 262144 pre 465µs on 581µs post 462µs diff 117µs
align 131072 pre 461µs on 583µs post 471µs diff 117µs
align 65536 pre 453µs on 573µs post 465µs diff 114µs
align 32768 pre 453µs on 561µs post 454µs diff 107µs
答案1
你可以看看闪存测试台工具。我认为设备不能可靠地导出这种属性。