晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : //lib/python3.6/site-packages/sos/report/plugins/block.py
# This file is part of the sos project: https://github.com/sosreport/sos
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# version 2 of the GNU General Public License.
#
# See the LICENSE file in the source distribution for further information.

from sos.report.plugins import Plugin, IndependentPlugin


class Block(Plugin, IndependentPlugin):

    short_desc = 'Block device information'

    plugin_name = 'block'
    profiles = ('storage', 'hardware')
    verify_packages = ('util-linux',)
    files = ('/sys/block',)

    def setup(self):
        self.add_forbidden_path("/sys/block/*/queue/iosched")

        self.add_file_tags({
            '/sys/block/.*/queue/scheduler': 'scheduler'
        })

        self.add_dir_listing('/dev', tags=['ls_dev'], recursive=True)
        self.add_dir_listing('/sys/block', recursive=True)

        self.add_cmd_output("blkid -c /dev/null", tags="blkid")
        self.add_cmd_output("lsblk", tags="lsblk")
        self.add_cmd_output("lsblk -O -P", tags="lsblk_pairs")
        self.add_cmd_output([
            "lsblk -t",
            "lsblk -D",
            "blockdev --report",
            "losetup -a",
        ])

        # legacy location for non-/run distributions
        self.add_copy_spec([
            "/etc/blkid.tab",
            "/run/blkid/blkid.tab",
            "/proc/partitions",
            "/proc/diskstats",
            "/sys/block/*/queue/",
            "/sys/block/sd*/device/timeout",
            "/sys/block/hd*/device/timeout",
            "/sys/block/sd*/device/state",
            "/sys/block/loop*/loop/",
        ])

        cmds = [
            "parted -s %(dev)s unit s print",
            "udevadm info %(dev)s",
            "udevadm info -a %(dev)s"
        ]
        self.add_device_cmd(cmds, devices='block', blacklist='ram.*')
        self.add_device_cmd("fdisk -l %(dev)s", blacklist="ram.*",
                            devices="block", tags="fdisk_l_sos")

        lsblk = self.collect_cmd_output("lsblk -f -a -l")
        # for LUKS devices, collect cryptsetup luksDump
        if lsblk['status'] == 0:
            for line in lsblk['output'].splitlines():
                if 'crypto_LUKS' in line:
                    dev = line.split()[0]
                    self.add_cmd_output(f'cryptsetup luksDump /dev/{dev}')
                    self.add_cmd_output(f'clevis luks list -d /dev/{dev}')

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