SW RAID 1 na RH-6.2 en
Vaclav Dusek
Vaclav.Dusek na upce.cz
Pátek Duben 14 10:18:45 CEST 2000
Hi,
poprve zapasim s RAIDem na Linuxu.
Na nove masine (syst. disk na IDE a 2x SCSI) bych chtel na SCSI discich
rozjet Raid-1
Myslim si, ze podporu SCSI a Raidu mam OK - viz vypis dmesg:
md driver 0.36.6 MAX_MD_DEV=4, MAX_REAL=8
linear personality registered
raid0 personality registered
raid1 personality registered
raid5 personality registered
(scsi0) <Adaptec AIC-7895 Ultra SCSI host adapter> found at PCI 12/0
(scsi0) Wide Channel A, SCSI ID=7, 32/255 SCBs
(scsi0) Downloading sequencer code... 374 instructions downloaded
(scsi1) <Adaptec AIC-7895 Ultra SCSI host adapter> found at PCI 12/1
(scsi1) Wide Channel B, SCSI ID=7, 32/255 SCBs
(scsi1) Downloading sequencer code... 374 instructions downloaded
scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.21/3.2.4
<Adaptec AIC-7895 Ultra SCSI host adapter>
scsi1 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.21/3.2.4
<Adaptec AIC-7895 Ultra SCSI host adapter>
scsi : 2 hosts.
(scsi0:0:1:0) Synchronous at 40.0 Mbyte/sec, offset 8.
Vendor: IBM Model: DNES-318350W Rev: SA30
Type: Direct-Access ANSI SCSI revision: 03
Detected scsi disk sda at scsi0, channel 0, id 1, lun 0
(scsi0:0:2:0) Synchronous at 40.0 Mbyte/sec, offset 8.
Vendor: IBM Model: DNES-318350W Rev: SA30
Type: Direct-Access ANSI SCSI revision: 03
Detected scsi disk sdb at scsi0, channel 0, id 2, lun 0
scsi : detected 2 SCSI disks total.
SCSI device sda: hdwr sector= 512 bytes. Sectors= 35843670 [17501 MB]
[17.5 GB]
SCSI device sdb: hdwr sector= 512 bytes. Sectors= 35843670 [17501 MB]
[17.5 GB]
Oba SCSI disky maji typ fd na cele partition (prikaz fd /dev/sda resp.
/dev/sdb)
Soubor /etc/raidtab vypada nasledovne
[root na bubu .mc]# cat /etc/raidtab
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 4
persistent-superblock 1
device /dev/sda1
raid-disk 0
device /dev/sdb1
raid-disk 1
Pokud zadam mkraid /dev/md0
[root na bubhandling MD device /dev/md0
analyzing super-block
disk 0: /dev/sda1, 17920507kB, raid superblock at 17920384kB
disk 1: /dev/sdb1, 17920507kB, raid superblock at 17920384kB
mkraid: aborted, see the syslog and /proc/mdstat for potential clues.
V syslogu nic neni a v mdstat je nasledujici:
/proc]# cat mdstat
Personalities : [1 linear] [2 raid0] [3 raid1] [4 raid5]
read_ahead not set
md0 : inactive
md1 : inactive
md2 : inactive
md3 : inactive
Nevi nekdo z vas, co delam spatne? Diky
--
Vaclav Dusek e-mail: Vaclav.Dusek na upce.cz
Univerzita Pardubice tel: 040 / 603 65 00
Studentska 84 0602 / 35 26 86
532 10 Pardubice fax: 040 / 603 60 10
**
http://dusek.upce.cz/
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