Hello everybody, I'd like to ask few questions about dir_index on ext4. On one of my servers running 2.6.32.14, we were experiencing performance problems, especially accessing directory with huge (hundreds of thousands) amount of files was pain. The filesystem had dir_index enabled, so I tried running fsck -D on it in order to force reindexation. It helped A LOT - ls -1 on this directory took about 5 minutes, after reindexation, it took about 10 seconds! So my question is - is it really needed to force reindexation from time to time? I'm pretty sure dir_index has been enabled since the creation of filesystem, so shouldn't index be maintained automatically? Is it possible to check somehow whether optimization is needed, without umounting fs and running fsck? And possibly also do this optimization? Thanks a lot in advance! Cheers! nik -- ------------------------------------- Ing. Nikola CIPRICH LinuxBox.cz, s.r.o. 28. rijna 168, 709 01 Ostrava tel.: +420 596 603 142 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: servis@xxxxxxxxxxx -------------------------------------
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