Raspberry Pi vadná SD karta vs. OLIMEX a jiné jednodesky

[Václav Ovsík]

Jinak jsem zkusim pustit ten fstrim:

  root na rpi:~# fstrim -v /
  /: 1.8 GiB (1869180928 bytes) trimmed
  root na rpi:~# df -h
  Filesystem      Size  Used Avail Use% Mounted on
  /dev/root       7.3G  4.3G  2.7G  62% /
  devtmpfs        460M     0  460M   0% /dev
  tmpfs           464M     0  464M   0% /dev/shm
  tmpfs           464M   12M  452M   3% /run
  tmpfs           5.0M  4.0K  5.0M   1% /run/lock
  tmpfs           464M     0  464M   0% /sys/fs/cgroup
  /dev/mmcblk0p1  120M   19M  102M  16% /boot/firmware
  tmpfs            93M     0   93M   0% /run/user/1000
  root na rpi:~# fstrim -v /
  /: 0 B (0 bytes) trimmed

Nasledne jsem udelal reboot a zkusil znovu:

  root na rpi:~# fstrim -v /
  /: 1.8 GiB (1869180928 bytes) trimmed
  root na rpi:~# fstrim -v /
  /: 0 B (0 bytes) trimmed


  root na rpi:~# dd if=/dev/urandom of=xxx bs=4k count=1024
  1024+0 records in
  1024+0 records out
  4194304 bytes (4.2 MB) copied, 2.14613 s, 2.0 MB/s
  root na rpi:~# ll -h xxx
  -rw-r--r-- 1 root root 4.0M Jun  3 21:44 xxx
  root na rpi:~# sync
  root na rpi:~# rm xxx
  root na rpi:~# sync
  root na rpi:~# fstrim -v /
  /: 16 MiB (16818176 bytes) trimmed

tak nevim 

-- 
Zito