Any ideas on why this corruption might be happening?
From: nicoya@xxxxxx Subject: RAID1 Corruption Date: July 30, 2004 10:44:53 AM GMT-05:00 To: linux-kernel@xxxxxxxxxxxxxxx
Ok, here's the deal. My friend has a Dual-CPU PowerMac 9600, and it's randomly corrupting it's filesystem. Kernel is 2.6.5, unpatched.
Currently it's set up as thus:
IDE Harddrives -> MD RAID1 -> LVM -> XFS
Everything works fine with only one drive in the RAID1 (not that it's much of a RAID1 that way). Add in a second drive (100% clean), sync it up, and it eats the filesystem.
I'm really quite baffled as to why this is happening, and my friend is getting understandably frustrated.
# uname -a Linux egunn 2.6.5 #4 SMP Thu Jun 24 22:15:21 CDT 2004 ppc GNU/Linux
# cat /proc/ide/pdc202xx
Ultra66 Chipset.
------------------------------- General Status ---------------------------------
Burst Mode : enabled
Host Mode : Tri-Stated
Bus Clocking : 100 External
IO pad select : 10 mA
Status Polling Period : 15
Interrupt Check Status Polling Delay : 15
--------------- Primary Channel ---------------- Secondary Channel -------------
disabled disabled
66 Clocking enabled enabled
Mode MASTER Mode MASTER
Error Error
--------------- drive0 --------- drive1 -------- drive0 ---------- drive1 ------
DMA enabled: yes yes yes yes
DMA Mode: UDMA 4 NOTSET UDMA 4 NOTSET
PIO Mode: PIO 4 NOTSET PIO 4 NOTSET
# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid5]
md0 : active raid1 hde[0] hdg[1]
40146560 blocks [2/2] [UU]unused devices: <none>
# pvdisplay --- Physical volume --- PV Name /dev/md0 VG Name raid40gs PV Size 38.29 GB / not usable 0 Allocatable yes (but full) PE Size (KByte) 4096 Total PE 9801 Free PE 0 Allocated PE 9801 PV UUID lKMk7i-S9Ex-OWsl-tp1Y-ujvy-GrgS-sINUpT # vgdisplay --- Volume group --- VG Name raid40gs System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 3 Open LV 3 Max PV 0 Cur PV 1 Act PV 1 VG Size 38.29 GB PE Size 4.00 MB Total PE 9801 Alloc PE / Size 9801 / 38.29 GB Free PE / Size 0 / 0 VG UUID 96IWfR-zm53-3qD8-ZilV-9zW6-VG87-36QqDI
# lvdisplay --- Logical volume --- LV Name /dev/raid40gs/var VG Name raid40gs LV UUID jgdM0R-fp4I-LgAl-s1vI-63i0-WHX6-OfnU69 LV Write Access read/write LV Status available # open 1 LV Size 4.88 GB Current LE 1250 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:0
--- Logical volume --- LV Name /dev/raid40gs/usr VG Name raid40gs LV UUID hWtNL5-gfaq-jwj4-R6XD-Sew2-TKCy-fxLKrW LV Write Access read/write LV Status available # open 1 LV Size 4.88 GB Current LE 1250 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:1
--- Logical volume --- LV Name /dev/raid40gs/home VG Name raid40gs LV UUID myekKQ-eXR7-0dGV-ZMg6-ISPG-Hijh-ZmDA5V LV Write Access read/write LV Status available # open 1 LV Size 28.52 GB Current LE 7301 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:2
-- Tony 'Nicoya' Mantler -- Master of Code-fu -- nicoya@xxxxxx -- http://nicoya.feline.pp.se/ -- http://www.ubb.ca/ --
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