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fix: Корректировка вычисления Use%, как это делает df

This commit is contained in:
Iu 2024-03-31 11:10:47 +03:00
parent 0bcb0af57e
commit 17d3e3bf7b
2 changed files with 22 additions and 12 deletions
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2
.gitignore vendored
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@ -160,3 +160,5 @@ cython_debug/
# option (not recommended) you can uncomment the following to ignore the entire idea folder. # option (not recommended) you can uncomment the following to ignore the entire idea folder.
#.idea/ #.idea/
/mnt/
/img

32
src/main.py
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@ -5,30 +5,38 @@ import time
BS = 1024**2 BS = 1024**2
def set_utilization(du, utilization_percent=0.6, baloon_filename='baloon'): def set_utilization(fs, utilization_percent=0.6, baloon_filename='baloon', hysteresis_percent=0.01):
fs = os.path.realpath(du) fs = os.path.realpath(fs)
du = disk_usage(fs) du = disk_usage(fs)
print(f'total: {int(du.total/ 2**30)}GB, used: {int(du.used/ 2**30)}GB, free: {int(du.free/ 2**30)}GB') if utilization_percent < 0.1 or utilization_percent > 0.9:
to_be_wasted = int((du.total * utilization_percent) - du.used) raise ValueError('utilization_percent must be between 0.1 and 0.9')
print(f'to_be_wasted: {int(to_be_wasted/ 2**30)}GB') if hysteresis_percent < 0.0001 or hysteresis_percent > 0.1:
if to_be_wasted < 0: raise ValueError('hysteresis_percent must be between 0.0001 and 0.1')
hysteresis = int(du.total * hysteresis_percent)
if hysteresis < BS: hysteresis = BS
print(f'hysteresis: {hysteresis}bytes')
print(f'total: {round(du.total/ 2**30, 3)}GB, used: {round(du.used/ 2**30, 3)}GB, free: {round(du.free/ 2**30, 3)}GB usage: {round(du.used * 100 / (du.used+du.free), 3)}%')
to_be_wasted = int(((du.used+du.free) * utilization_percent) - ((du.used+du.free) - du.free))
print(f'to_be_wasted: {round(to_be_wasted/ 2**30, 3)}GB ')
if to_be_wasted < -hysteresis:
to_be_trimmed = abs(to_be_wasted) to_be_trimmed = abs(to_be_wasted)
baloon_size = os.path.getsize(os.path.join(fs, baloon_filename)) baloon_size = os.path.getsize(os.path.join(fs, baloon_filename))
if baloon_size> to_be_trimmed: if baloon_size> to_be_trimmed:
os.truncate(os.path.join(fs, baloon_filename), baloon_size - to_be_trimmed) os.truncate(os.path.join(fs, baloon_filename), baloon_size - to_be_trimmed)
else: print(f'can\'t trim {baloon_size} > {to_be_trimmed}') print(f'trimmed {to_be_trimmed} Bytes')
elif to_be_wasted > 0: else: print(f'can\'t trim {baloon_size} < {to_be_trimmed}Bytes')
elif to_be_wasted > hysteresis:
with open(os.path.join(fs, baloon_filename) , 'ab') as f: with open(os.path.join(fs, baloon_filename) , 'ab') as f:
last = 0 last = 0
writed = to_be_wasted
while to_be_wasted > 0: while to_be_wasted > 0:
if time.time() - last > 1: if time.time() - last > 1:
print('\r', end='') print(f'left {int(to_be_wasted/ 2**30)}GB \r', end='')
print(f'left {int(to_be_wasted/ 2**30)}GB ', end='')
last = time.time() last = time.time()
write_size = min(to_be_wasted, BS) write_size = min(to_be_wasted, BS)
f.write(b'x' * write_size) f.write(b'x' * write_size)
to_be_wasted -= write_size to_be_wasted -= write_size
print('Done ') print(f'Done, added {writed} bytes')
set_utilization('.')