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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Directory :  /usr/share/doc/nfs-utils/

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Current File : //usr/share/doc/nfs-utils/KNOWNBUGS
nfsd:

 *	We currently keep the inode in the exports struct. This is
	a bad idea with directories that are intended to be used as
	a mount point. Must store the file name instead and do a
	lookup when getfh is called. Yuck!

	Even yuckier: what do we do about exports matching when we
	can't keep the inode number?

 *	stating a file on remote cdrom returns st_blocks == 0 for some
	apps.

 *	Should allow multiple exports per dev if one of the directories
	isn't a subdir of the other.

nfsclnt:

 *	On some occasions, an EAGAIN reported by the transport layer
	will be propagated to the VFS.
 *	Some operations do not seem to release the inode properly, so
	unmounting the device fails.

lockd:

 *	Handle portmap registration in a separate thread. portmap may
	not be running when we try to mount the first NFS volume (esp.
	when mounting /usr).

 *	Does not inform rpc.statd when hosts no longer require
	monitoring; hosts are incorrectly monitored until next system
	reboot.

exportfs/mountd:

 *	Export handling is reported to do odd things at times.

haha - 2025