def execute(self, args: argparse.Namespace) -> None:
if args.d:
print("{:^5} {:^16} {:^10} {:^16} {:^5} {:^5} {:^5} {:^5}".format(
"MAJOR", "GENDISK", "NAME", "REQUEST_QUEUE", "TOTAL", "ASYNC",
"SYNC", "DRV"))
for disk in for_each_disk():
stats = queue_request_stats(disk['queue'])
print("{:5d} {:016x} {:<10} {:016x} {:5d} {:5d} {:5d} {:5d}".
format(int(disk['major']), int(disk.address),
gendisk_name(disk), int(disk['queue']),
stats[0] + stats[1], stats[0], stats[1],
stats[2] + stats[3]))
def test_for_each_disk(self):
for bdev in storage.for_each_disk():
self.assertTrue(type(bdev) is gdb.Value)
self.assertTrue(bdev.type == storage.types.gendisk_type)
# This script dumps stuck requests for every disk on the system
from crash.subsystem.storage import for_each_disk
from crash.subsystem.storage.decoders import for_each_bio_in_stack
from crash.subsystem.storage import gendisk_name
from crash.subsystem.storage.block import for_each_request_in_queue
from crash.types.list import list_for_each_entry
from crash.util import get_symbol_value
from crash.cache.syscache import kernel, jiffies_to_msec
empty = []
flush_end_io = get_symbol_value('flush_end_io')
for b in for_each_disk():
name = gendisk_name(b)
count = 0
for r in for_each_request_in_queue(b['queue']):
age_in_jiffies = kernel.jiffies - r['start_time']
age = float(int(kernel.jiffies_to_msec(age_in_jiffies))) / 1000
if count == 0:
print name
if r['bio']:
print "{}: {:x} request: age={}s, bio chain".format(
count, int(r.address), age, int(r['bio']))
n = 0
for entry in for_each_bio_in_stack(r['bio']):
print " {}: {}".format(n, entry['description'])
n += 1
else: