im running gentoo with EVMS/LVM on 2.4.19 and XFS on a loop-aes crypted
I have write cache disabled on the 3ware controller. I copied 300 gb
over network, I noticed that every 50mb or so, the controller stalled,
didnt accept more data while writing like crazy to disk.
it took me 24 h to copy 300 gb over 100mbit network. After that I tried
to turn write cache on, huge more performance. hmm well. I rebooted
couple of times, suddenley I could mount ther XFS partition any more
(bad superblock). I disabled write cache again and thank god I could fix
the issue with xfs_repair.
So, here I am , disbled write cache, ok. the performance as I stated
above is awfull, is this how its supposed to be ? disable write cache
and have terrible performance?
I just wonder how you guys do it.
also: Do I have to disable write cache on the drives themselfes too ?
I have another box with an SCSI ICP Controller and RAID5/XFS on it, I
quickly disabled write cache there too, had it running for a year with
thx for your input and help on this
Christophe Zwecker mail: doc@xxxxxxxxxx
Hamburg, Germany fon: +49 179 3994867
"Who is General Failure ? And why is he reading my disk ??"