Re: lug-bg: RAID Array

[vgetov@email.domain.hidden (Velin Getov)]

Marian Popov wrote:

<em class="quotelev1">> Zdraveite !
<em class="quotelev1">>  
<em class="quotelev1">> Imam edin problem, koito ne moga da resha sam.
<em class="quotelev1">> Stava vapros za RAID masiv na dynna platka GA-8PE800 Ultra.
<em class="quotelev1">>  
<em class="quotelev1">> Znachi probvah da instaliram Debian 30.r1 Woody kato predvaritelno
<em class="quotelev1">> sym napravil masiva kato mirror ot 2 diska (ednakvi).
<em class="quotelev1">> Problema e che linux-a izobshto ne namira diskovete ili masiva.
<em class="quotelev1">>  
<em class="quotelev1">> Sled tova si pomislih che shte e dobre pyrvo da instaliram linux-a
<em class="quotelev1">> na obiknovennia IDE kontroler kato mu dobavia modulite za RAID
<em class="quotelev1">> s komantata modconf. Sled kato napravih vsichko, slojih dvata diska
<em class="quotelev1">> na raid kontrolera i napravih mirror ot edinia na drugia.
<em class="quotelev1">>  
<em class="quotelev1">> Sled tova razreshih ot BIOS-a da boot-va ot RAID.
<em class="quotelev1">> Niama problem lilo-to si bootva no problema idva kogato triabva da se
<em class="quotelev1">> mount-ne roof fs-a.
<em class="quotelev1">> Znaete kakvo stava. Kernel panic unable to mount root fs.
<em class="quotelev1">>  
<em class="quotelev1">> Za syjalenie ne vijdam nikyde da mi otkriva raid masiva sledovatelno
<em class="quotelev1">> ne moga da razbera kato kakvo ustroistvo shte mi se iavi.
<em class="quotelev1">> Dali kato /dev/sda ili neshto syvsem razlichno.
<em class="quotelev1">>  
<em class="quotelev1">> Mislia si da kompiliram kernel s poddryjka na RAID a ne da zarejdam
<em class="quotelev1">> kato moduli i ako stane nomera pone shte razbera kato kakvi u-va
<em class="quotelev1">> shte mi se iaviava masiva.
<em class="quotelev1">>  
<em class="quotelev1">> Ne sym siguren dali obache tova e plavilnia nachin.
<em class="quotelev1">>  
<em class="quotelev1">> Molia niakoi ako ima ideia ili e pravil veche neshto takova da go obsydim.
<em class="quotelev1">>  
<em class="quotelev1">> Blagodarai predvaritelno.
<em class="quotelev1">>  
<em class="quotelev1">> --
<em class="quotelev1">> Marian Popov
<em class="quotelev1">> mano_at_pazardjik.com.NOSPAM <mailto:mano_at_pazardjik.com.NOSPAM>
<em class="quotelev1">> System & Network Administrator
<em class="quotelev1">> --
        Çäðàâåé.

Íàñêîðî è àç èìàõ ñåðèçíî çàíèìàíèå â òàçè îáëàñò (RAID-1), êàêòî ñ 
Debian òàêà è ñ RedHat. Âñè÷êî ðàáîòè áåç íèêàêâè ïðîáëåìè âå÷å îêîëî 
ñåäìèöà.

Ìíîãî å âàæíî äà îïðåäåëèø êàêúâ ÷èï ïîëçâà òâîåòî äúíî çà RAID 
êîíòðîëåð. Â êåðíåëà ïîääðúæêàòà çàñåãà å ñàìî çà Promise (ïîíå â 
2.4.20). Äðóãèòå ÷èïîâå íå ñå ïîääúðæàò ñ RAID1, à ñàìî ñ RAID-0 (ïîíå 
òàêîâà íåùî ïðî÷åòîõ íÿêúäå ïî ôîðóìèòå). Ïðîâåðè ñè äúíîòî è àêî å íåùî 
äðóãî òðÿáâà äà ñè òúðñèø äðóãî ðåøåíèå íà ïðîáëåìà: àç èçïîëçâàõ Multi 
Device Driver "md", ðàáîòè ñè ÷óäåñíî, ìàêàð è ñ 5-6% ïî-áàâåí òðàíñôåð 
îò õàðä äèñêà.

Àêî ÷èïà òè å íà Promise Technology, êîíôèãóðèðàø òåçè íåùà:

ATA/IDE/MFM/RLL support  --->
   IDE, ATA and ATAPI Block devices --->
   <*> Support for IDE Raid controllers (EXPERIMENTAL) 

    <*> Support Promise software RAID Fasttrak(tm)) (EXPERIMENTAL)

Êàêòî çàáåëÿçâàø òîâà ñè å software RAID, íî å ðåàëèçèðàí ñ îòäåëåí äðàéâåð.

Êîìïèëèðàø òèÿ íåùà ñòàòè÷íî â êåðíåëà, çà äà ìîæå äà sè ðàçïîçíàå 
êîíòðîëåðà ïðåäè äà ìîíòèðà root-à. Ñëåä òîâà â fstab ñëàãàø íåùî îò ñîðòà:

/dev/ataraid/d0p1     /      reiserfs      defaults      0      0

êàòî íà /dev/ataraid/d0p1 ïðåäñòàâëÿâà /dev/hde1 i /dev/hdg1 îáà÷å â 
RAID-1 ðåæèì (àêî ïðåäïîëîæèì ÷å äèñêîæåòå ñà òè íà 3-òîòî è 4-òîòî IDE 
íà äúíîòî).

Çà software RAID:
http://unthought.net/Software-RAID.HOWTO/Software-RAID.HOWTO.html

Àêî èìàø íóæäà îò ïîâå÷å èíôî, ïèøè.


-- 
Velin Getov
JDC, Telecomputer BG
-- 
Java Development Center, IIS Ltd.
G.M. Dimitrov blvd. bl.60 apt.79
Sofia, BG-1172
email:  vGetov_at_iis.bg
phone:  +359(0)2-962-5581
fax:    +359(0)2-720-531
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