{"id":43782,"date":"2026-08-02T08:00:43","date_gmt":"2026-08-02T05:00:43","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/?p=43782"},"modified":"2026-08-02T08:00:43","modified_gmt":"2026-08-02T05:00:43","slug":"ubuntu-18-04-uzerinde-mdadm-ile-raid-dizileri-olusturma","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/ubuntu-18-04-uzerinde-mdadm-ile-raid-dizileri-olusturma\/","title":{"rendered":"Ubuntu 18.04 \u00dczerinde mdadm ile RAID Dizileri Olu\u015fturma"},"content":{"rendered":"<h2>Ubuntu 18.04 \u00dczerinde mdadm ile RAID Dizileri Olu\u015fturma<\/h2>\n<p>Veri depolama, modern bilgi i\u015flem altyap\u0131lar\u0131n\u0131n temel ta\u015flar\u0131ndan biridir. Veri g\u00fcvenli\u011fi, eri\u015filebilirlik ve performans, herhangi bir sunucu veya i\u015f istasyonu i\u00e7in kritik \u00f6neme sahiptir. Bu ihtiya\u00e7lar\u0131 kar\u015f\u0131lamak amac\u0131yla geli\u015ftirilen teknolojilerden biri de RAID (Redundant Array of Independent Disks) dizileridir. RAID, birden fazla fiziksel diski tek bir mant\u0131ksal birim olarak birle\u015ftirerek veri yedeklili\u011fi, performans art\u0131\u015f\u0131 veya her ikisini birden sunar. Bu makalede, Ubuntu 18.04 i\u015fletim sistemi \u00fczerinde yaz\u0131l\u0131msal RAID dizileri olu\u015fturmak i\u00e7in kullan\u0131lan <code>mdadm<\/code> arac\u0131n\u0131 ayr\u0131nt\u0131l\u0131 bir \u015fekilde inceleyece\u011fiz.<\/p>\n<p>Yaz\u0131l\u0131msal RAID, i\u015fletim sistemi \u00e7ekirde\u011fi taraf\u0131ndan y\u00f6netilen ve standart CPU kaynaklar\u0131n\u0131 kullanan bir \u00e7\u00f6z\u00fcmd\u00fcr. Donan\u0131msal RAID kartlar\u0131na k\u0131yasla daha uygun maliyetli ve esnektir. Ubuntu 18.04, <code>mdadm<\/code> (Multiple Device Admin) arac\u0131 sayesinde yaz\u0131l\u0131msal RAID yap\u0131land\u0131rmas\u0131n\u0131 kolayca yapmam\u0131za olanak tan\u0131r. Bu sayede, sistem y\u00f6neticileri ve ileri d\u00fczey kullan\u0131c\u0131lar, disk ar\u0131zalar\u0131na kar\u015f\u0131 dayan\u0131kl\u0131 sistemler kurabilir veya depolama performans\u0131n\u0131 optimize edebilirler.<\/p>\n<h3>RAID Neden Kullan\u0131lmal\u0131?<\/h3>\n<p>RAID, \u00e7e\u015fitli avantajlar sunar:<\/p>\n<p>*   <strong>Veri Yedeklili\u011fi (Redundancy):<\/strong> Baz\u0131 RAID seviyeleri (RAID 1, 5, 6, 10 gibi), disk ar\u0131zas\u0131 durumunda veri kayb\u0131n\u0131 \u00f6nlemek i\u00e7in yedeklilik sa\u011flar. Bir disk ar\u0131zaland\u0131\u011f\u0131nda, sistem \u00e7al\u0131\u015fmaya devam eder ve veriler kurtar\u0131labilir.<br \/>\n*   <strong>Performans Art\u0131\u015f\u0131:<\/strong> RAID 0 gibi seviyeler, verileri birden fazla diske da\u011f\u0131tarak okuma\/yazma h\u0131zlar\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131rabilir. RAID 10 gibi hibrit seviyeler hem performans hem de yedeklilik sunar.<br \/>\n*   <strong>Daha B\u00fcy\u00fck Depolama Birimleri:<\/strong> Birden fazla k\u00fc\u00e7\u00fck diski birle\u015ftirerek, tek bir b\u00fcy\u00fck mant\u0131ksal depolama alan\u0131 olu\u015fturulabilir.<br \/>\n*   <strong>Veri B\u00fct\u00fcnl\u00fc\u011f\u00fc:<\/strong> Baz\u0131 RAID seviyeleri, disk hatalar\u0131n\u0131 tespit etme ve d\u00fczeltme yetene\u011fi sayesinde veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc korur.<\/p>\n<h3>\u00d6n Gereksinimler<\/h3>\n<p>RAID dizisi olu\u015fturmaya ba\u015flamadan \u00f6nce a\u015fa\u011f\u0131daki maddelerin kar\u015f\u0131land\u0131\u011f\u0131ndan emin olun:<\/p>\n<p>*   <strong>Ubuntu 18.04 \u0130\u015fletim Sistemi:<\/strong> Sunucu veya masa\u00fcst\u00fc s\u00fcr\u00fcm\u00fc fark etmeksizin, komut sat\u0131r\u0131 eri\u015fimi olan bir Ubuntu 18.04 kurulumu.<br \/>\n*   <strong>Birden Fazla Fiziksel Disk:<\/strong> RAID dizisi i\u00e7in en az iki, genellikle daha fazla, bo\u015f ve formatlanmam\u0131\u015f fiziksel diske ihtiyac\u0131n\u0131z olacakt\u0131r. Bu diskler <code>\/dev\/sdb<\/code>, <code>\/dev\/sdc<\/code>, <code>\/dev\/sdd<\/code> gibi isimlerle g\u00f6r\u00fcnebilir. Mevcut i\u015fletim sisteminizin kurulu oldu\u011fu diski kullanmamaya \u00f6zen g\u00f6sterin.<br \/>\n*   <strong>Root Ayr\u0131cal\u0131klar\u0131:<\/strong> T\u00fcm komutlar i\u00e7in <code>sudo<\/code> kullanma yetkisi.<br \/>\n*   <strong>Temel Linux Komut Bilgisi:<\/strong> Komut sat\u0131r\u0131nda gezinme ve temel disk y\u00f6netimi komutlar\u0131na a\u015final\u0131k.<\/p>\n<h3>mdadm Kurulumu<\/h3>\n<p><code>mdadm<\/code> arac\u0131, Ubuntu&#8217;da varsay\u0131lan olarak y\u00fckl\u00fc gelmeyebilir. Kurulum i\u00e7in a\u015fa\u011f\u0131daki ad\u0131mlar\u0131 izleyin:<\/p>\n<p>\u00d6ncelikle paket listesini g\u00fcncelleyin:<\/p>\n<p>sudo apt update<\/p>\n<p>Ard\u0131ndan <code>mdadm<\/code> paketini kurun:<\/p>\n<p>sudo apt install mdadm<\/p>\n<p>Kurulum s\u0131ras\u0131nda, sistem RAID dizilerini otomatik olarak monte edip etmeyece\u011finizi sorabilir. Genellikle varsay\u0131lan se\u00e7enekleri kabul etmek yeterlidir.<\/p>\n<h3>Kullan\u0131labilir Diskleri Tan\u0131mlama<\/h3>\n<p>RAID dizisine dahil edece\u011finiz diskleri do\u011fru bir \u015fekilde tan\u0131mlamak \u00e7ok \u00f6nemlidir. Yanl\u0131\u015f diski se\u00e7mek veri kayb\u0131na yol a\u00e7abilir. Sisteminizdeki diskleri listelemek i\u00e7in <code>lsblk<\/code> veya <code>fdisk -l<\/code> komutlar\u0131n\u0131 kullanabilirsiniz:<\/p>\n<p>lsblk<\/p>\n<p>Bu komut, ba\u011fl\u0131 t\u00fcm blok cihazlar\u0131 (diskler ve b\u00f6l\u00fcmler) hiyerar\u015fik bir yap\u0131da g\u00f6sterir. Boyutlar\u0131na ve mevcut b\u00f6l\u00fcmlerine bakarak bo\u015f diskleri tespit edebilirsiniz. \u00d6rne\u011fin, <code>\/dev\/sdb<\/code>, <code>\/dev\/sdc<\/code>, <code>\/dev\/sdd<\/code> gibi diskler genellikle yeni eklenen veya kullan\u0131lmayan disklerdir.<\/p>\n<p>fdisk -l<\/p>\n<p>Bu komut, sistemdeki t\u00fcm diskler hakk\u0131nda detayl\u0131 bilgi verir, b\u00f6l\u00fcm tablolar\u0131n\u0131 ve boyutlar\u0131n\u0131 g\u00f6sterir. \u00d6zellikle &#8220;Disk \/dev\/sdb: &#8230;&#8221; \u015feklinde ba\u015flayan ve \u00fczerinde herhangi bir b\u00f6l\u00fcm (<code>\/dev\/sdb1<\/code> gibi) olmayan diskleri aray\u0131n.<\/p>\n<p><strong>\u00d6nemli:<\/strong> \u0130\u015fletim sisteminizin kurulu oldu\u011fu diski (genellikle <code>\/dev\/sda<\/code>) veya \u00fczerinde \u00f6nemli veriler bulunan diskleri RAID dizisine eklemeyin. Bu makaledeki \u00f6rneklerde <code>\/dev\/sdb<\/code>, <code>\/dev\/sdc<\/code>, <code>\/dev\/sdd<\/code> ve <code>\/dev\/sde<\/code> disklerini kullanaca\u011f\u0131m\u0131z\u0131 varsayaca\u011f\u0131z.<\/p>\n<h3>Diskleri RAID \u0130\u00e7in Haz\u0131rlama<\/h3>\n<p>RAID dizisi olu\u015fturmadan \u00f6nce, her bir diski RAID i\u00e7in uygun bir b\u00f6l\u00fcmleme \u015femas\u0131yla haz\u0131rlaman\u0131z gerekir. Her diskte, RAID dizisine kat\u0131lacak tek bir b\u00f6l\u00fcm olu\u015fturmal\u0131 ve bu b\u00f6l\u00fcm\u00fcn tipini &#8220;Linux raid autodetect&#8221; olarak ayarlamal\u0131s\u0131n\u0131z. <code>fdisk<\/code> veya <code>gdisk<\/code> (GPT b\u00f6l\u00fcm tablolar\u0131 i\u00e7in) kullanabilirsiniz. Biz burada MBR b\u00f6l\u00fcm tablolar\u0131 i\u00e7in <code>fdisk<\/code> kullanaca\u011f\u0131z.<\/p>\n<p>A\u015fa\u011f\u0131daki ad\u0131mlar\u0131 her bir disk i\u00e7in tekrarlay\u0131n (\u00f6rne\u011fin <code>\/dev\/sdb<\/code>, <code>\/dev\/sdc<\/code>, <code>\/dev\/sdd<\/code>):<\/p>\n<p>sudo fdisk \/dev\/sdb<\/p>\n<p><code>fdisk<\/code> komutuna girdikten sonra a\u015fa\u011f\u0131daki ad\u0131mlar\u0131 izleyin:<br \/>\n*   <code>n<\/code> tu\u015funa basarak yeni bir b\u00f6l\u00fcm olu\u015fturun.<br \/>\n*   <code>p<\/code> tu\u015funa basarak birincil (primary) b\u00f6l\u00fcm se\u00e7in.<br \/>\n*   <code>1<\/code> tu\u015funa basarak b\u00f6l\u00fcm numaras\u0131n\u0131 1 olarak ayarlay\u0131n.<br \/>\n*   \u0130lk sekt\u00f6r ve son sekt\u00f6r i\u00e7in varsay\u0131lan de\u011ferleri (<code>Enter<\/code> tu\u015funa basarak) kabul edin. Bu, diskin tamam\u0131n\u0131 kaplayan tek bir b\u00f6l\u00fcm olu\u015fturacakt\u0131r.<br \/>\n*   <code>t<\/code> tu\u015funa basarak b\u00f6l\u00fcm tipini de\u011fi\u015ftirin.<br \/>\n*   <code>L<\/code> tu\u015funa basarak mevcut b\u00f6l\u00fcm tiplerinin listesini g\u00f6rebilirsiniz. <code>fd<\/code> kodu &#8220;Linux raid autodetect&#8221; i\u00e7indir. <code>fd<\/code> yaz\u0131p <code>Enter<\/code> tu\u015funa bas\u0131n.<br \/>\n*   <code>p<\/code> tu\u015funa basarak b\u00f6l\u00fcm tablosunu kontrol edin. Yeni olu\u015fturdu\u011funuz b\u00f6l\u00fcm\u00fcn tipinin <code>Linux raid autodetect<\/code> (kimlik <code>fd<\/code>) oldu\u011fundan emin olun.<br \/>\n*   <code>w<\/code> tu\u015funa basarak de\u011fi\u015fiklikleri kaydedin ve <code>fdisk<\/code>&#8216;ten \u00e7\u0131k\u0131n.<\/p>\n<p>Bu ad\u0131mlar\u0131 RAID dizisine dahil etmek istedi\u011finiz t\u00fcm diskler i\u00e7in tekrarlay\u0131n (\u00f6rn. <code>\/dev\/sdb<\/code>, <code>\/dev\/sdc<\/code>, <code>\/dev\/sdd<\/code>). Her disk i\u00e7in <code>\/dev\/sdb1<\/code>, <code>\/dev\/sdc1<\/code>, <code>\/dev\/sdd1<\/code> gibi b\u00f6l\u00fcmler olu\u015fturmu\u015f olacaks\u0131n\u0131z.<\/p>\n<p>De\u011fi\u015fikliklerin sistem taraf\u0131ndan tan\u0131nd\u0131\u011f\u0131ndan emin olmak i\u00e7in <code>partprobe<\/code> komutunu \u00e7al\u0131\u015ft\u0131rabilirsiniz:<\/p>\n<p>sudo partprobe<\/p>\n<h3>RAID Dizisi Olu\u015fturma<\/h3>\n<p>Diskleri haz\u0131rlad\u0131ktan sonra, <code>mdadm --create<\/code> komutunu kullanarak RAID dizisini olu\u015fturabilirsiniz. RAID seviyesi se\u00e7imi, performans ve yedeklilik gereksinimlerinize ba\u011fl\u0131d\u0131r.<\/p>\n<h4>RAID Seviyeleri ve mdadm Komutlar\u0131<\/h4>\n<p>\u0130\u015fte yayg\u0131n RAID seviyeleri ve <code>mdadm<\/code> ile nas\u0131l olu\u015fturulacaklar\u0131:<\/p>\n<p><strong>1. RAID 0 (Striping &#8211; \u015eeritlenme)<\/strong><br \/>\n*   <strong>A\u00e7\u0131klama:<\/strong> Verileri birden fazla diske bloklar halinde da\u011f\u0131t\u0131r. Okuma\/yazma performans\u0131 artar ancak yedeklilik sa\u011flamaz. Bir disk ar\u0131zalan\u0131rsa t\u00fcm veriler kaybolur.<br \/>\n*   <strong>Minimum Disk Say\u0131s\u0131:<\/strong> 2<br \/>\n*   <strong>Kullan\u0131labilir Alan:<\/strong> T\u00fcm disklerin toplam alan\u0131.<br \/>\n*   <strong>\u00d6rnek Komut (2 disk ile):<\/strong><\/p>\n<p>    sudo mdadm &#8211;create \/dev\/md0 &#8211;level=0 &#8211;raid-devices=2 \/dev\/sdb1 \/dev\/sdc1<\/p>\n<p><strong>2. RAID 1 (Mirroring &#8211; Aynalama)<\/strong><br \/>\n*   <strong>A\u00e7\u0131klama:<\/strong> Verileri e\u015f zamanl\u0131 olarak iki veya daha fazla diske yazar. M\u00fckemmel yedeklilik sa\u011flar; bir disk ar\u0131zalan\u0131rsa di\u011fer diskler veriyi bar\u0131nd\u0131r\u0131r. Performans art\u0131\u015f\u0131 genellikle okuma h\u0131zlar\u0131nda g\u00f6r\u00fcl\u00fcr.<br \/>\n*   <strong>Minimum Disk Say\u0131s\u0131:<\/strong> 2<br \/>\n*   <strong>Kullan\u0131labilir Alan:<\/strong> En k\u00fc\u00e7\u00fck diskin boyutu (genellikle disklerden birinin boyutu).<br \/>\n*   <strong>\u00d6rnek Komut (2 disk ile):<\/strong><\/p>\n<p>    sudo mdadm &#8211;create \/dev\/md0 &#8211;level=1 &#8211;raid-devices=2 \/dev\/sdb1 \/dev\/sdc1<\/p>\n<p>    <em>Not:<\/em> E\u011fer bir disk hen\u00fcz ba\u011fl\u0131 de\u011filse veya bir disk ar\u0131zal\u0131ym\u0131\u015f gibi ba\u015flatmak isterseniz <code>missing<\/code> anahtar kelimesini kullanabilirsiniz:<br \/>\n    <code>sudo mdadm --create \/dev\/md0 --level=1 --raid-devices=2 \/dev\/sdb1 missing<\/code><\/p>\n<p><strong>3. RAID 5 (Striping with Parity &#8211; Pariteli \u015eeritlenme)<\/strong><br \/>\n*   <strong>A\u00e7\u0131klama:<\/strong> Verileri ve e\u015flik (parity) bilgilerini t\u00fcm disklere da\u011f\u0131t\u0131r. Bir disk ar\u0131zas\u0131na dayanabilir. Performans ve yedeklilik aras\u0131nda iyi bir denge sunar. E\u015flik bilgileri, ar\u0131zal\u0131 bir diskin verilerini yeniden olu\u015fturmak i\u00e7in kullan\u0131l\u0131r.<br \/>\n*   <strong>Minimum Disk Say\u0131s\u0131:<\/strong> 3<br \/>\n<em>   <strong>Kullan\u0131labilir Alan:<\/strong> (N-1) <\/em> En k\u00fc\u00e7\u00fck diskin boyutu (N = toplam disk say\u0131s\u0131).<br \/>\n*   <strong>\u00d6rnek Komut (3 disk ile):<\/strong><\/p>\n<p>    sudo mdadm &#8211;create \/dev\/md0 &#8211;level=5 &#8211;raid-devices=3 \/dev\/sdb1 \/dev\/sdc1 \/dev\/sdd1<\/p>\n<p><strong>4. RAID 6 (Striping with Double Parity &#8211; \u00c7ift Pariteli \u015eeritlenme)<\/strong><br \/>\n*   <strong>A\u00e7\u0131klama:<\/strong> RAID 5&#8217;e benzer ancak iki diskin ayn\u0131 anda ar\u0131zalanmas\u0131na dayanabilir. Daha y\u00fcksek veri g\u00fcvenli\u011fi sunar ancak RAID 5&#8217;e g\u00f6re daha fazla disk alan\u0131 e\u015flik i\u00e7in ayr\u0131l\u0131r ve yazma performans\u0131 biraz daha d\u00fc\u015f\u00fckt\u00fcr.<br \/>\n*   <strong>Minimum Disk Say\u0131s\u0131:<\/strong> 4<br \/>\n<em>   <strong>Kullan\u0131labilir Alan:<\/strong> (N-2) <\/em> En k\u00fc\u00e7\u00fck diskin boyutu.<br \/>\n*   <strong>\u00d6rnek Komut (4 disk ile):<\/strong><\/p>\n<p>    sudo mdadm &#8211;create \/dev\/md0 &#8211;level=6 &#8211;raid-devices=4 \/dev\/sdb1 \/dev\/sdc1 \/dev\/sdc1 \/dev\/sdd1 \/dev\/sde1<\/p>\n<p><strong>5. RAID 10 (Nested RAID 1+0 &#8211; \u0130\u00e7 \u0130\u00e7e RAID)<\/strong><br \/>\n*   <strong>A\u00e7\u0131klama:<\/strong> RAID 1 (aynalama) ve RAID 0 (\u015feritlenme) kombinasyonudur. Veriler \u00f6nce aynalan\u0131r, ard\u0131ndan aynalanm\u0131\u015f \u00e7iftler \u015feritlenir. Hem y\u00fcksek performans hem de m\u00fckemmel yedeklilik sa\u011flar. \u0130ki adede kadar disk ar\u0131zas\u0131na dayanabilir (ancak ayn\u0131 aynalama \u00e7iftinden olmamalar\u0131 gerekir).<br \/>\n*   <strong>Minimum Disk Say\u0131s\u0131:<\/strong> 4 (\u00e7ift say\u0131da olmal\u0131d\u0131r)<br \/>\n*   <strong>Kullan\u0131labilir Alan:<\/strong> Toplam disk alan\u0131n\u0131n yar\u0131s\u0131.<br \/>\n*   <strong>\u00d6rnek Komut (4 disk ile):<\/strong><\/p>\n<p>    sudo mdadm &#8211;create \/dev\/md0 &#8211;level=10 &#8211;raid-devices=4 \/dev\/sdb1 \/dev\/sdc1 \/dev\/sdd1 \/dev\/sde1<\/p>\n<p>    <code>--layout=near<\/code> veya <code>--layout=far<\/code> gibi parametrelerle RAID 10&#8217;un veri yerle\u015fimini de belirtebilirsiniz. Varsay\u0131lan genellikle <code>near<\/code>&#8216;d\u0131r.<\/p>\n<p><strong>RAID Dizisi Olu\u015fturma S\u00fcrecini \u0130zleme:<\/strong><\/p>\n<p>Bir RAID dizisi olu\u015fturuldu\u011funda, \u00f6zellikle RAID 1, 5, 6 veya 10 gibi yedekli dizilerde, diskler aras\u0131nda veri senkronizasyonu (rebuild) i\u015flemi ba\u015flar. Bu i\u015flem, disk boyutuna ve sistem y\u00fck\u00fcne ba\u011fl\u0131 olarak zaman alabilir. Durumu a\u015fa\u011f\u0131daki komutla izleyebilirsiniz:<\/p>\n<p>cat \/proc\/mdstat<\/p>\n<p>Bu komut, <code>\/dev\/md0<\/code> gibi RAID dizinizin ad\u0131n\u0131, durumunu (<code>[UU]<\/code>, <code>[U_]<\/code>, <code>[_U]<\/code> gibi), ilerlemesini ve tahmini tamamlanma s\u00fcresini g\u00f6sterecektir. <code>[UU]<\/code> veya <code>[UUUU]<\/code> gibi ifadeler, t\u00fcm disklerin aktif ve sa\u011fl\u0131kl\u0131 oldu\u011funu g\u00f6sterir.<\/p>\n<h3>RAID Dizilerini Y\u00f6netme ve \u0130zleme<\/h3>\n<p>RAID dizisi olu\u015fturulduktan sonra, durumunu kontrol etmek ve y\u00f6netmek i\u00e7in \u00e7e\u015fitli <code>mdadm<\/code> komutlar\u0131 kullanabilirsiniz.<\/p>\n<p>*   <strong>RAID Dizisinin Detayl\u0131 Bilgilerini G\u00f6r\u00fcnt\u00fcleme:<\/strong><\/p>\n<p>    sudo mdadm &#8211;detail \/dev\/md0<\/p>\n<p>    Bu komut, dizinin durumunu (aktif, bozulmu\u015f, yeniden olu\u015fturuluyor), \u00fcye diskleri, olay say\u0131s\u0131n\u0131 ve di\u011fer \u00f6nemli bilgileri g\u00f6sterir.<\/p>\n<p>*   <strong>Tek Bir Bile\u015fen Diskin Bilgilerini \u0130nceleme:<\/strong><\/p>\n<p>    sudo mdadm &#8211;examine \/dev\/sdb1<\/p>\n<p>    Bu komut, belirli bir disk b\u00f6l\u00fcm\u00fcn\u00fcn <code>mdadm<\/code> s\u00fcper blo\u011funu inceler ve o b\u00f6l\u00fcm\u00fcn hangi RAID dizisine ait oldu\u011funu g\u00f6sterir.<\/p>\n<p>*   <strong>RAID Dizisini Durdurma:<\/strong><br \/>\n    Bir RAID dizisini ay\u0131rmak veya bak\u0131m yapmak i\u00e7in durdurman\u0131z gerekebilir. Dizinin ba\u011fl\u0131 olmad\u0131\u011f\u0131ndan emin olun (bkz. Dosya Sistemi Olu\u015fturma ve Ba\u011flama).<\/p>\n<p>    sudo mdadm &#8211;stop \/dev\/md0<\/p>\n<p>*   <strong>RAID Dizisini Birle\u015ftirme (Assemble):<\/strong><br \/>\n    Sistem yeniden ba\u015flat\u0131ld\u0131\u011f\u0131nda veya bir dizi durdurulduktan sonra, <code>mdadm<\/code> genellikle diziyi otomatik olarak birle\u015ftirir. Ancak manuel olarak birle\u015ftirmeniz gerekirse:<\/p>\n<p>    sudo mdadm &#8211;assemble \/dev\/md0 \/dev\/sdb1 \/dev\/sdc1<\/p>\n<p>    Veya otomatik olarak alg\u0131lanan bile\u015fenlerle:<\/p>\n<p>    sudo mdadm &#8211;assemble &#8211;scan<\/p>\n<h3>RAID Dizisi \u00dczerinde Dosya Sistemi Olu\u015fturma<\/h3>\n<p>RAID dizisi olu\u015fturulduktan sonra, t\u0131pk\u0131 fiziksel bir disk gibi \u00fczerine bir dosya sistemi olu\u015fturman\u0131z gerekir. En yayg\u0131n kullan\u0131lan dosya sistemlerinden biri <code>ext4<\/code>&#8216;t\u00fcr.<\/p>\n<p>sudo mkfs.ext4 \/dev\/md0<\/p>\n<p>Di\u011fer dosya sistemlerini de kullanabilirsiniz, \u00f6rne\u011fin <code>XFS<\/code> (<code>sudo mkfs.xfs \/dev\/md0<\/code>) veya <code>Btrfs<\/code> (<code>sudo mkfs.btrfs \/dev\/md0<\/code>). Se\u00e7iminiz performans, \u00f6zellik ve kullan\u0131m senaryonuza ba\u011fl\u0131d\u0131r.<\/p>\n<h3>RAID Dizisini Ba\u011flama (Mount Etme)<\/h3>\n<p>Dosya sistemi olu\u015fturulduktan sonra, RAID dizisini sisteminizde kullan\u0131labilir hale getirmek i\u00e7in bir ba\u011flama noktas\u0131na (mount point) ba\u011flaman\u0131z gerekir.<\/p>\n<p><strong>Ge\u00e7ici Ba\u011flama:<\/strong><\/p>\n<p>\u00d6ncelikle bir ba\u011flama noktas\u0131 dizini olu\u015fturun:<\/p>\n<p>sudo mkdir \/mnt\/raid0<\/p>\n<p>Ard\u0131ndan RAID dizisini ba\u011flay\u0131n:<\/p>\n<p>sudo mount \/dev\/md0 \/mnt\/raid0<\/p>\n<p>Art\u0131k <code>\/mnt\/raid0<\/code> dizini alt\u0131nda RAID dizinize eri\u015febilirsiniz.<\/p>\n<p><strong>Kal\u0131c\u0131 Ba\u011flama (Sistem Yeniden Ba\u015flat\u0131ld\u0131ktan Sonra):<\/strong><\/p>\n<p>Sistem yeniden ba\u015flat\u0131ld\u0131\u011f\u0131nda RAID dizisinin otomatik olarak ba\u011flanmas\u0131n\u0131 sa\u011flamak i\u00e7in <code>\/etc\/fstab<\/code> dosyas\u0131n\u0131 d\u00fczenlemeniz gerekir.<\/p>\n<p>1.  <strong>RAID Dizisinin UUID&#8217;sini al\u0131n:<\/strong><br \/>\n    Bu, diziyi benzersiz bir \u015fekilde tan\u0131mlar ve disk yolu de\u011fi\u015fse bile do\u011fru bir \u015fekilde ba\u011flanmas\u0131n\u0131 sa\u011flar.<\/p>\n<p>    sudo blkid \/dev\/md0<\/p>\n<p>    \u00c7\u0131kt\u0131dan <code>UUID=\"xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx\"<\/code> k\u0131sm\u0131n\u0131 kopyalay\u0131n.<\/p>\n<p>2.  <strong><code>\/etc\/fstab<\/code> dosyas\u0131n\u0131 d\u00fczenleyin:<\/strong><\/p>\n<p>    sudo nano \/etc\/fstab<\/p>\n<p>    Dosyan\u0131n sonuna a\u015fa\u011f\u0131daki sat\u0131r\u0131 ekleyin (kendi UUID&#8217;nizi ve ba\u011flama noktan\u0131z\u0131 kullanarak):<\/p>\n<p>    UUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx \/mnt\/raid0 ext4 defaults 0 0<\/p>\n<p>    *   <code>UUID=...<\/code>: RAID dizinizin UUID&#8217;si.<br \/>\n    *   <code>\/mnt\/raid0<\/code>: RAID dizisinin ba\u011flanaca\u011f\u0131 dizin.<br \/>\n    *   <code>ext4<\/code>: Kullan\u0131lan dosya sistemi.<br \/>\n    *   <code>defaults<\/code>: Ba\u011flama se\u00e7enekleri (okuma\/yazma, senkronizasyon vb.).<br \/>\n    *   <code>0 0<\/code>: <code>dump<\/code> ve <code>fsck<\/code> se\u00e7enekleri. Genellikle varsay\u0131lan de\u011ferlerdir.<\/p>\n<p>    De\u011fi\u015fiklikleri kaydedin ve d\u00fczenleyiciden \u00e7\u0131k\u0131n (Nano i\u00e7in <code>Ctrl+O<\/code>, <code>Enter<\/code>, <code>Ctrl+X<\/code>).<\/p>\n<p>3.  <strong>Yeni fstab girdilerini test edin:<\/strong><\/p>\n<p>    sudo mount -a<\/p>\n<p>    Bu komut, <code>\/etc\/fstab<\/code> dosyas\u0131ndaki t\u00fcm girdileri yeniden ba\u011flamaya \u00e7al\u0131\u015f\u0131r. Herhangi bir hata mesaj\u0131 almazsan\u0131z, ayarlar\u0131n\u0131z do\u011frudur.<\/p>\n<h3>mdadm Yap\u0131land\u0131rmas\u0131n\u0131 Kaydetme<\/h3>\n<p>Sisteminizin yeniden ba\u015flat\u0131ld\u0131\u011f\u0131nda RAID dizilerini otomatik olarak tan\u0131mas\u0131 ve birle\u015ftirmesi i\u00e7in <code>mdadm<\/code> yap\u0131land\u0131rmas\u0131n\u0131 kaydetmeniz \u00f6nemlidir. Bu, <code>mdadm.conf<\/code> dosyas\u0131na yaz\u0131l\u0131r ve <code>initramfs<\/code> (ba\u015flang\u0131\u00e7ta y\u00fcklenen mini Linux sistemi) i\u00e7ine dahil edilir.<\/p>\n<p>1.  <strong>Mevcut RAID dizilerinin yap\u0131land\u0131rmas\u0131n\u0131 mdadm.conf dosyas\u0131na yaz\u0131n:<\/strong><\/p>\n<p>    sudo mdadm &#8211;detail &#8211;scan &#8211;verbose >> \/etc\/mdadm\/mdadm.conf<\/p>\n<p>    Bu komut, mevcut t\u00fcm aktif RAID dizilerinin detaylar\u0131n\u0131 tarar ve bunlar\u0131 <code>\/etc\/mdadm\/mdadm.conf<\/code> dosyas\u0131na ekler.<\/p>\n<p>2.  <strong>initramfs&#8217;yi g\u00fcncelleyin:<\/strong><br \/>\n    <code>initramfs<\/code>, sistem \u00f6ny\u00fcklemesi s\u0131ras\u0131nda \u00e7ekirdek taraf\u0131ndan kullan\u0131lan bir ba\u015flang\u0131\u00e7 ortam\u0131d\u0131r. <code>mdadm.conf<\/code> dosyas\u0131ndaki de\u011fi\u015fikliklerin burada da ge\u00e7erli olmas\u0131 i\u00e7in <code>initramfs<\/code>&#8216;yi g\u00fcncellemeniz gerekir.<\/p>\n<p>    sudo update-initramfs -u<\/p>\n<p>    Bu ad\u0131m, sistemin bir sonraki \u00f6ny\u00fcklemesinde RAID dizilerini do\u011fru bir \u015fekilde tan\u0131mas\u0131n\u0131 ve monte etmesini sa\u011flar.<\/p>\n<h3>RAID Yedeklili\u011fini Test Etme (RAID 1, 5, 6, 10 \u0130\u00e7in)<\/h3>\n<p>Yedekli bir RAID dizisi kurduysan\u0131z, bir disk ar\u0131zas\u0131 durumunda sistemin nas\u0131l tepki verdi\u011fini test etmek \u00f6nemlidir. Bu, gelecekteki olas\u0131 sorunlara kar\u015f\u0131 haz\u0131rl\u0131kl\u0131 olman\u0131z\u0131 sa\u011flar.<\/p>\n<p><strong>1. Disk Ar\u0131zas\u0131n\u0131 Sim\u00fcle Etme:<\/strong><\/p>\n<p>Bir diski ar\u0131zal\u0131 olarak i\u015faretleyebilir ve diziden \u00e7\u0131karabilirsiniz. \u00d6rne\u011fin, <code>\/dev\/sdc1<\/code> diskini ar\u0131zal\u0131 olarak i\u015faretleyelim:<\/p>\n<p>sudo mdadm \/dev\/md0 &#8211;fail \/dev\/sdc1<\/p>\n<p>\u015eimdi dizinin durumunu kontrol edin:<\/p>\n<p>cat \/proc\/mdstat<\/p>\n<p><code>\/dev\/md0<\/code> dizisinin durumunun <code>[U_U]<\/code> (RAID 1 i\u00e7in) veya <code>[UU_U]<\/code> (RAID 5 i\u00e7in) gibi ar\u0131zal\u0131 bir bile\u015feni g\u00f6sterece\u011fini ve <code>[F]<\/code> (failed) olarak i\u015faretlendi\u011fini g\u00f6receksiniz.<\/p>\n<p>Ar\u0131zal\u0131 diski diziden \u00e7\u0131kar\u0131n:<\/p>\n<p>sudo mdadm \/dev\/md0 &#8211;remove \/dev\/sdc1<\/p>\n<p><strong>2. Yeni Bir Yedek Disk Ekleme (Hot-Spare veya De\u011fi\u015ftirme):<\/strong><\/p>\n<p>Bir disk ar\u0131zaland\u0131\u011f\u0131nda, yeni bir disk ekleyerek diziyi yeniden olu\u015fturabilirsiniz. Yeni diski de RAID i\u00e7in haz\u0131rlaman\u0131z (b\u00f6l\u00fcmleme ve tip <code>fd<\/code>) gerekir. Diyelim ki yeni diskimiz <code>\/dev\/sde<\/code> ve \u00fczerinde <code>\/dev\/sde1<\/code> b\u00f6l\u00fcm\u00fcn\u00fc olu\u015fturduk.<\/p>\n<p>sudo mdadm \/dev\/md0 &#8211;add \/dev\/sde1<\/p>\n<p>Yeni disk eklendikten sonra, RAID dizisi otomatik olarak yeniden olu\u015fturma (rebuild) i\u015flemine ba\u015flayacakt\u0131r. Bu i\u015flem, ar\u0131zal\u0131 diskin verilerini yeni diske kopyalayarak diziyi tekrar sa\u011fl\u0131kl\u0131 duruma getirir.<\/p>\n<p>Durumu izlemek i\u00e7in:<\/p>\n<p>cat \/proc\/mdstat<\/p>\n<p><code>[UUUU]<\/code> veya <code>[UU]<\/code> gibi tam sa\u011fl\u0131kl\u0131 duruma geldi\u011fini ve <code>rebuild<\/code> i\u015fleminin tamamland\u0131\u011f\u0131n\u0131 g\u00f6rene kadar bekleyin.<\/p>\n<h3>RAID Dizisini Kald\u0131rma<\/h3>\n<p>Bir RAID dizisini art\u0131k kullanmak istemiyorsan\u0131z veya yeniden yap\u0131land\u0131rmak istiyorsan\u0131z, a\u015fa\u011f\u0131daki ad\u0131mlar\u0131 izleyerek kald\u0131rabilirsiniz:<\/p>\n<p>1.  <strong>RAID Dizisini Ay\u0131r\u0131n:<\/strong><br \/>\n    Dizinin ba\u011fl\u0131 oldu\u011fundan emin olun ve ba\u011flama noktas\u0131ndan ay\u0131r\u0131n:<\/p>\n<p>    sudo umount \/mnt\/raid0<\/p>\n<p>2.  <strong>RAID Dizisini Durdurun:<\/strong><\/p>\n<p>    sudo mdadm &#8211;stop \/dev\/md0<\/p>\n<p>3.  <strong>Her Bir Diskin S\u00fcper Blo\u011funu Temizleyin:<\/strong><br \/>\n    Bu ad\u0131m, disklerin \u00fczerinde bulunan <code>mdadm<\/code> metadata bilgilerini siler. Bu sayede diskler tekrar bo\u015f diskler gibi kullan\u0131labilir.<\/p>\n<p>    sudo mdadm &#8211;zero-superblock \/dev\/sdb1<br \/>\n    sudo mdadm &#8211;zero-superblock \/dev\/sdc1<br \/>\n    sudo mdadm &#8211;zero-superblock \/dev\/sdd1<br \/>\n    # Dizideki t\u00fcm diskler i\u00e7in tekrarlay\u0131n<\/p>\n<p>4.  <strong><code>\/etc\/fstab<\/code> ve <code>\/etc\/mdadm\/mdadm.conf<\/code> Dosyalar\u0131n\u0131 Temizleyin:<\/strong><br \/>\n    RAID dizisiyle ilgili girdileri bu dosyalardan silin.<\/p>\n<p>    *   <code>\/etc\/fstab<\/code> dosyas\u0131ndan ilgili <code>UUID<\/code> sat\u0131r\u0131n\u0131 silin veya yorum sat\u0131r\u0131 yap\u0131n (<code>#<\/code> ile ba\u015flat\u0131n).<br \/>\n    *   <code>\/etc\/mdadm\/mdadm.conf<\/code> dosyas\u0131ndan ilgili <code>ARRAY<\/code> sat\u0131r\u0131n\u0131 silin.<\/p>\n<p>5.  <strong>initramfs&#8217;yi G\u00fcncelleyin:<\/strong><br \/>\n    De\u011fi\u015fikliklerin sistem taraf\u0131ndan tan\u0131nmas\u0131 i\u00e7in <code>initramfs<\/code>&#8216;yi tekrar g\u00fcncelleyin:<\/p>\n<p>    sudo update-initramfs -u<\/p>\n<p>Bu ad\u0131mlardan sonra, diskleriniz tekrar ba\u011f\u0131ms\u0131z ve temiz diskler olarak kullan\u0131labilir hale gelecektir.<\/p>\n<h3>Sonu\u00e7<\/h3>\n<p>Ubuntu 18.04 \u00fczerinde <code>mdadm<\/code> ile yaz\u0131l\u0131msal RAID dizileri olu\u015fturmak, sistem y\u00f6neticilerine ve kullan\u0131c\u0131lara veri g\u00fcvenli\u011fi, depolama performans\u0131 ve esneklik a\u00e7\u0131s\u0131ndan \u00f6nemli avantajlar sunar. Bu makalede ad\u0131m ad\u0131m g\u00f6sterilen s\u00fcre\u00e7ler sayesinde, farkl\u0131 RAID seviyelerini kullanarak ihtiya\u00e7lar\u0131n\u0131za uygun depolama \u00e7\u00f6z\u00fcmleri olu\u015fturabilirsiniz.<\/p>\n<p>RAID, veri kayb\u0131na kar\u015f\u0131 \u00f6nemli bir koruma sa\u011flasa da, eksiksiz bir yedekleme stratejisinin yerini tutmaz. \u00d6nemli verileriniz i\u00e7in d\u00fczenli olarak harici depolama birimlerine veya bulut tabanl\u0131 servislere yedekleme yapmaya devam etmeniz kritik \u00f6neme sahiptir. Ayr\u0131ca, RAID dizilerinizin durumunu d\u00fczenli olarak <code>cat \/proc\/mdstat<\/code> veya <code>sudo mdadm --detail \/dev\/md0<\/code> komutlar\u0131yla kontrol etmek, olas\u0131 disk ar\u0131zalar\u0131n\u0131 erken tespit etmenizi ve veri kayb\u0131n\u0131 \u00f6nlemenizi sa\u011flar.<\/p>\n<p><code>mdadm<\/code> arac\u0131, RAID dizilerini y\u00f6netmek i\u00e7in \u00e7ok say\u0131da ba\u015fka se\u00e7ene\u011fe ve geli\u015fmi\u015f \u00f6zelli\u011fe sahiptir (\u00f6rne\u011fin, hot-spare diskler, diziyi geni\u015fletme, migrasyon). Bu makale, temel RAID dizisi kurulumu ve y\u00f6netimi i\u00e7in kapsaml\u0131 bir rehber sunmaktad\u0131r. \u0130htiya\u00e7lar\u0131n\u0131za g\u00f6re daha fazla bilgi edinmek i\u00e7in <code>man mdadm<\/code> komutunu kullanarak <code>mdadm<\/code>&#8216;in detayl\u0131 k\u0131lavuzuna ba\u015fvurabilirsiniz.<\/p>\n","protected":false},"excerpt":{"rendered":"Ubuntu 18. 04 \u00dczerinde mdadm ile RAID Dizileri Olu\u015fturma Veri depolama, modern bilgi i\u015flem altyap\u0131lar\u0131n\u0131n temel ta\u015flar\u0131ndan biridir.","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1468],"tags":[],"class_list":{"0":"post-43782","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-ubuntu","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - 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