I have been through the other questions/answers regarding inode usage, mounting issues and others but none of those questions seem to apply...
df -h
/dev/sdd1 931G 100G 785G 12% /media/teradisk
df -ih
/dev/sdd1 59M 12M 47M 21% /media/teradisk
Basically, I have an EXT4 formatted drive 1TB in size, and am writing arount 12 million (12201106) files into one directory. I can't find any documentation on a files-per-directory limit for EXT4 but the filesystem reports no space left.
Oddly, I can still create new files on the drive and target folder but when doing a large cp/rsync, the calls to mkstemp and rename report no space left on device.
rsync: mkstemp "/media/teradisk/files/f.xml.No79k5" failed: No space left on device (28)
rsync: rename "/media/teradisk/files/f.xml.No79k5" -> "files/f.xml": No space left on device (28)
I know storing this many files in one directory isn't advised for a ton of reasons, but unless I can help it I don't wish to split them up.
Inode and space usage for tmpfs, the device and everything else looks fine. Any ideas of the cause?
Answer
The XFS filesystem would be a more supportable (long-term) solution for what you're trying to do now. Large file-count directories are not a problem for XFS. Of course, fixing this at the application level would also be helpful...
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