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Forum Discussion
NV+ V2 stalling when 80%+ full (20047616)
i've recently purchased one of the Netgear ReadyNAS NV+ V2 units and have become very unhappy with it. it started out ok and could copy files to it at good rate, now that the unit is over 80% full i'v...
hauser wrote: Found another bug/glitch/weirdness with the unit, if i've got a backup of my firefox cache folder on the nas (47.9 MB (50,267,577 bytes), 529 Files, 2,799 Folders) IOWait goes really high continously and times out some times. Removing this collection of folders and copy starts again at the normal speed. maybe there's an issue with number of folders on EXT3 or the file system driver in use in the firmware. i've got about ~1.13mil files and about 137k folders on the drive currently.
currently i've gotten to 94% used (336G free of 5.5Tb) still trying to see how far i can fill the unit before it has an issue again.
currently with the nas modifyed as below
Firmware: 5.3.7
Write Cache=OFF
/dev/c/c formatted as EXT3
tune2fs -O ^dir_index /dev/c/c
tune2fs -O ^dir_index turns off B-tree indexing for the volume. so far it's never had any real advatages to file systems unless you are reading only and you know the file in a directory you haven't browsed to yet and are directly accessing that file.
dir_index can be turned on again by
tune2fs -O dir_index /dev/c/c
umount /dev/c/c
e2fsck -fD /dev/c/c
seems to be working a little better for me than stock so far. waiting to see how full i can get before any more issues, if i an fill to <1gb free i'll be happyer. but if there is a limit to the number of folders able to be stored on the nas, as with having my Firefox profile backup it pushes total folder count over 140k. EXT3 has a limit of 31,998 sub-directories in any single folder so it shouldn't be that and there is still heaps of free inodes (89,921,695 of 91,185,152 used) it would seem like there is yet another bug with NETGEAR's firmware.
EDIT: with all the above changes i've just been able to fill the drive to ~30mb free. at which point (expectably IOWait skyrockets) but during the last ~15% of filling the drive IOWaits have been getting quite long when starting to write largish files (1-3gb)
Wau, so extreme case :lol:, but turning off directory index and write cache isn't good... this must hurt normal performance so much.
30MB free on volume is absolutely crazy situation.
Anyway you can try droping journal in filesystem and mount it as ext2 (without data loss). :rofl:
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