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IOError Errno 28 No space left on device

Error while OTU picking ...

IOError: [Errno 28] No space left on device

/tmp/ directory might be too small (for many samples or large sequence reference database)

create new bigger directory for temporary files and tell path to qiime (a) and python (b)
    (a) add path to QIIME default setting file .qiime_config
    → Edit .qiime_config
    (b) for python, set path to shell variable TMPDIR (add command to your .bashrc file)
    export TMPDIR=/my/new/tmp/directory