EMMC flash storage wear level: различия между версиями
(Новая страница: «The following commands are used to get the estimated wear level of the eMMC flash storage chip used in Wiren Board 5 controllers: Mount debugfs <pre> mount -t…») |
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Mount debugfs | Mount debugfs | ||
< | <syntaxhighlight lang="bash"> | ||
mount -t debugfs none /sys/kernel/debug/ | mount -t debugfs none /sys/kernel/debug/ | ||
</ | </syntaxhighlight> | ||
Read the wear level estimation | Read the wear level estimation | ||
< | <syntaxhighlight lang="bash"> | ||
cat /sys/kernel/debug/mmc0/mmc0\:0001/ext_csd | python -c 'import binascii, sys; print "~%d%% wear" % (ord(binascii.unhexlify(sys.stdin.read().strip())[0x5e])*10)' | cat /sys/kernel/debug/mmc0/mmc0\:0001/ext_csd | python -c 'import binascii, sys; print "~%d%% wear" % (ord(binascii.unhexlify(sys.stdin.read().strip())[0x5e])*10)' | ||
< | </syntaxhighlight> | ||
Example output: | Example output: | ||
Версия 01:59, 22 января 2016
The following commands are used to get the estimated wear level of the eMMC flash storage chip used in Wiren Board 5 controllers:
Mount debugfs
mount -t debugfs none /sys/kernel/debug/
Read the wear level estimation
cat /sys/kernel/debug/mmc0/mmc0\:0001/ext_csd | python -c 'import binascii, sys; print "~%d%% wear" % (ord(binascii.unhexlify(sys.stdin.read().strip())[0x5e])*10)'
Example output:
~10% wear
The level is returned in multiplies of 10 percent. The minimum wear is 0% (new device), the maximum is supposed to be 100%.