Re:No Space Left on Device
by caf on Tuesday September 06, 2016 @05:36AM
(#12434651)
This does not seem like the exactly correct diagnosis.
ext4 doesn't care if there's collisions in the dir_index hash - they're entirely expected. The dir_index hashes are just used to look up in a tree, the lowest level of which points you to the directory block that contains all the directory entries for names with hashes in a given range.
However, those hashes do get used for the directory position used by telldir() / seekdir() - and those are only 32 bits on 32 bit architectures. So I suspect that something involving those calls is generating the ENOSPC.
ext4 doesn't care if there's collisions in the dir_index hash - they're entirely expected. The dir_index hashes are just used to look up in a tree, the lowest level of which points you to the directory block that contains all the directory entries for names with hashes in a given range.
However, those hashes do get used for the directory position used by telldir() / seekdir() - and those are only 32 bits on 32 bit architectures. So I suspect that something involving those calls is generating the ENOSPC.