Folks, Since approx. a half year I have run two servers with CentOS4, all was running very stable. Then I upgraded to CentOS5 (fresh install). The servers are running quite unstable since the upgrade. The system is freezing after short uptime. I suspect the driver for the 3ware controller, because I got such error messages: 3w-xxxx: scsi0: Character ioctl (0x1f) timed out, resetting card. 3w-xxxx: scsi0: Character ioctl (0x1f) timed out, resetting card. 3w-xxxx: scsi0: Character ioctl (0x1f) timed out, resetting card. (lots of repeats of this messages) sd 0:0:0:0: rejecting I/O to offline device sd 0:0:0:0: rejecting I/O to offline device sd 0:0:0:0: rejecting I/O to offline device EXT3-fs error (device sda6): ext3_find_entry: reading directory #2 offset 0 sd 0:0:0:0: rejecting I/O to offline device sd 0:0:0:0: rejecting I/O to offline device sd 0:0:0:0: rejecting I/O to offline device After some time (few hours) the systems are completely freezing, no display of errors on the console or logs Here some relevant data of my system: 00:0a.0 RAID bus controller: 3ware Inc 7xxx/8xxx-series PATA/SATA-RAID (rev 01) Subsystem: 3ware Inc 7xxx/8xxx-series PATA/SATA-RAID Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (2250ns min), Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 185 Region 0: I/O ports at e100 [size=16] Region 1: Memory at fa824000 (32-bit, non-prefetchable) [size=16] Region 2: Memory at fa000000 (32-bit, non-prefetchable) [size=8M] [virtual] Expansion ROM at 80060000 [disabled] [size=64K] Capabilities: [40] Power Management version 1 Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Kernel: 2.6.18-8.1.6.el5 It cannot be a 3ware hardware error, because the controller was exchanged with the same results afterwards. Any hints are very welcome. Thanks, Luc _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos