Buna,
Am o problema ciudata cu software raid pe un sistem Linux:
Distributie: Gentoo 2005.0
Kernel: 2.6.11-gentoo-r9
glibc: 2.3.4.20041102-r1
$ cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid5] [multipath] [raid10]
[faulty]
md1 : active raid0 hdh1[3] hdg1[2] hde1[1] hdc1[0]
87168256 blocks 64k chunks
md0 : active raid5 hdh2[3] hdg2[2] hde2[1] hdc2[0] hda4[4]
1084708352 blocks level 5, 64k chunk, algorithm 2 [5/5] [UUUUU]
unused devices: <none>
$ mdadm --misc -D /dev/md0
/dev/md0:
Version : 00.90.01
Creation Time : Fri May 27 03:34:20 2005
Raid Level : raid5
Array Size : 1084708352 (1034.46 GiB 1110.74 GB)
Device Size : 271177088 (258.61 GiB 277.69 GB)
Raid Devices : 5
Total Devices : 5
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Tue May 31 03:19:58 2005
State : clean
Active Devices : 5
Working Devices : 5
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
UUID : 1f9feaed:d48e56c8:d68e1f66:0ff88b64
Events : 0.8483
Number Major Minor RaidDevice State
0 22 2 0 active sync /dev/hdc2
1 33 2 1 active sync /dev/hde2
2 34 2 2 active sync /dev/hdg2
3 34 66 3 active sync /dev/hdh2
4 3 4 4 active sync /dev/hda4
Problema:
1) formatez /dev/md0 cu ext3 si o montez
- copii un fisier de vreo 33 de GB, e ok
- cand verific cu md5sum obtin dupa o vreme I/O error si in logs:
May 27 05:16:07 linux attempt to access beyond end of device
May 27 05:16:07 linux md0: rw=0, want=26573911976, limit=2169416704
May 27 05:16:07 linux attempt to access beyond end of device
May 27 05:16:07 linux md0: rw=0, want=6145266608, limit=2169416704
May 27 05:16:07 linux attempt to access beyond end of device
May 27 05:16:07 linux md0: rw=0, want=9338278840, limit=2169416704
May 27 05:16:07 linux attempt to access beyond end of device
May 27 05:16:07 linux md0: rw=0, want=25422267320, limit=2169416704
May 27 05:16:07 linux attempt to access beyond end of device
2) demontez, formatez cu xfs, si montez
- copii acelasi fisier de 33 GB cu scp de pe alta mashina, e ok
- verifc md5-sum-urile de pe mashina sursa si de aici => DIFERITE
3) mai am un /dev/md1 care este raid 0
- aceasi problema: md5sum-urile sunt diferite
- daca copii fisierul de 33 de GB in / (care e o partitie ext3 obisnuita,
nu e pe raid), md5sum-urile corespund.
Am cautat o multime pe Google dar mai toate raspunsurile sugeraul probleme
de memorie. Am verificat cu memtest86 vreo doua ore, nici o eroare.
Any ideas? Mersi
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