This morning I rsynced my system to an USB HDD via some scripts utilizing rsync. The machine froze when a big file was transfered (updated on the backup device). The host as well as the backup use ext4. My machine froze with no logs at all. The system just stalled and anything using the host disk was unusable. No new shell, no closing of running apps (probably due to stalled config writes on exit). acpid shutdown via power button worked but the init scripts suffered a lot of problems. Finally (after some minutes) the disk could be unmounted by the init script and the machine powered off. I don't know what I could do to repeat that problem. I was unable to ssh in and switch to vt1 as well.
Please advise how to test again/what info is required. Logs are 'empty' besides this: === 2.6.38-rc6 Feb 22 08:32:36 marc kernel: [ 41.527852] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready Feb 22 08:32:46 marc kernel: [ 52.104662] wlan0: no IPv6 routers present Feb 22 08:33:33 marc kernel: [ 99.008401] fuse init (API version 7.16) Feb 22 08:42:34 marc kernel: [ 638.643602] usb 2-1.1: new high speed USB device using ehci_hcd and address 5 Feb 22 08:42:35 marc kernel: [ 638.732119] usb 2-1.1: New USB device found, idVendor=04cf, idProduct=8818 Feb 22 08:42:35 marc kernel: [ 638.732125] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Feb 22 08:42:35 marc kernel: [ 638.732130] usb 2-1.1: Product: USB Mass Storage Device Feb 22 08:42:35 marc kernel: [ 638.732133] usb 2-1.1: Manufacturer: Myson Century, Inc. Feb 22 08:42:35 marc kernel: [ 638.732137] usb 2-1.1: SerialNumber: 100 Feb 22 08:42:35 marc kernel: [ 638.733036] scsi6 : usb-storage 2-1.1:1.0 Feb 22 08:42:36 marc kernel: [ 639.733360] scsi 6:0:0:0: Direct-Access SAMSUNG HM160HC LQ10 PQ: 0 ANSI: 0 CCS Feb 22 08:42:36 marc kernel: [ 639.734122] sd 6:0:0:0: [sdb] 312581808 512-byte logical blocks: (160 GB/149 GiB) Feb 22 08:42:36 marc kernel: [ 639.734586] sd 6:0:0:0: [sdb] Write Protect is off Feb 22 08:42:36 marc kernel: [ 639.734592] sd 6:0:0:0: [sdb] Mode Sense: 00 14 00 00 Feb 22 08:42:36 marc kernel: [ 639.735484] sd 6:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA Feb 22 08:42:36 marc kernel: [ 639.793900] sdb: sdb1 Feb 22 08:42:36 marc kernel: [ 639.796339] sd 6:0:0:0: [sdb] Attached SCSI disk Feb 22 08:42:40 marc kernel: [ 644.366257] EXT4-fs (sdb1): mounted filesystem with ordered data mode. Opts: (null) ... rsync no ran for ~ 10 minutes ... === hang + acpid shutdown === reboot into stable again immediately Feb 22 09:06:06 marc kernel: [ 0.000000] Linux version 2.6.37-ck2-dezzy (marc@marc) (gcc version 4.5.2 (Gentoo 4.5.2 p1.0) ) #1 SMP PREEMPT Mon Feb 14 06:05:25 CET 2011 Feb 22 09:06:06 marc kernel: [ 0.000000] BIOS-provided physical RAM map:
OK, I retested some more and think this was related to #29022. When no X is running there were no probs.