http://bulutwiki.ulakbim.gov.tr/index.php?action=history&feed=atom&title=CEPH_SSD_Tamponlama_-_Cache_Tiering 2026-06-19T04:49:28Z Viki üzerindeki bu sayfanın değişiklik geçmişi. MediaWiki 1.30.0 http://bulutwiki.ulakbim.gov.tr/index.php?title=CEPH_SSD_Tamponlama_-_Cache_Tiering&diff=235&oldid=prev 2018-09-20T12:40:56Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr style="vertical-align: top;" lang="tr"> <td colspan="2" style="background-color: white; color:black; text-align: center;">← Önceki hâli</td> <td colspan="2" style="background-color: white; color:black; text-align: center;">12:40, 20 Eylül 2018 tarihindeki hâli</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >1. satır:</td> <td colspan="2" class="diff-lineno">1. satır:</td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">### </del>CEPH CACHE TIERING <del class="diffchange diffchange-inline">###</del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">=== </ins>CEPH CACHE TIERING <ins class="diffchange diffchange-inline">===</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>write-back mode icin anlatilmistir.</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>write-back mode icin anlatilmistir.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>nvme ssd disklerden olusturulan rbdssd pool'u cache olarak sata disk pooldan olusan rbdperftest poolu onune koymak icin Mimic versiyonunda yapilmasi gereken islemler</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>nvme ssd disklerden olusturulan rbdssd pool'u cache olarak sata disk pooldan olusan rbdperftest poolu onune koymak icin Mimic versiyonunda yapilmasi gereken islemler</div></td></tr> <tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l40" >40. satır:</td> <td colspan="2" class="diff-lineno">40. satır:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>&#160; ceph osd pool set OpenstackCachedRBD hit_set_type bloom</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>&#160; ceph osd pool set OpenstackCachedRBD hit_set_type bloom</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">### </del>KALDIRMAK icin <del class="diffchange diffchange-inline">###</del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">=== </ins>KALDIRMAK icin <ins class="diffchange diffchange-inline">===</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>uzerindeki verileri flush etmek icin;</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>uzerindeki verileri flush etmek icin;</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>&#160; ceph osd tier cache-mode rbdssd forward --yes-i-really-mean-it</div></td><td class='diff-marker'>&#160;</td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>&#160; ceph osd tier cache-mode rbdssd forward --yes-i-really-mean-it</div></td></tr> <!-- diff cache key pi_wiki:diff:version:1.11a:oldid:233:newid:235 --> </table>

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<p>&quot;### CEPH CACHE TIERING ### write-back mode icin anlatilmistir. nvme ssd disklerden olusturulan rbdssd pool&#039;u cache olarak sata disk pooldan olusan rbdperftest...&quot; içeriğiyle yeni sayfa oluşturdu</p> <p><b>Yeni sayfa</b></p><div>### CEPH CACHE TIERING ###<br /> write-back mode icin anlatilmistir.<br /> nvme ssd disklerden olusturulan rbdssd pool'u cache olarak sata disk pooldan olusan rbdperftest poolu onune koymak icin Mimic versiyonunda yapilmasi gereken islemler<br /> <br /> #cache tiering<br /> #cache pool: rbdssd<br /> #cool pool: rbdperftest<br /> <br /> * rbdperftest icerisinde kaln objeleri silmek icin:<br /> for i in `rados -p rbdperftest ls`; do rados -p rbdperftest rm $i; echo $i; done<br /> <br /> * tier yapida rbdssd'yi cache'lemek icin<br /> ceph osd tier add rbdperftest rbdssd<br /> <br /> * degisen dosyalar oldugundan modu write-back olarak ayarlandi.<br /> ceph osd tier cache-mode rbdssd writeback<br /> <br /> * tum veri trafiginin rbdssd cache uzerinden aktarilabilmesi icin yapildi. Dilernirse eger veri cache'te yok ise bu durumda dogrudan hdd uzerinden de okunabilir. (read-proxy mode)<br /> ceph osd tier set-overlay rbdperftest rbdssd<br /> <br /> * durum kontrol edilir.<br /> ceph osd pool ls detail<br /> <br /> * Cache'te yer alan degisen objeler pool kapasitesinin yuzde 40 oldugunda hdd'ye flush etmeye basla.<br /> ceph osd pool set rbdssd cache_target_dirty_ratio 0.4<br /> <br /> * Degisen objeler toplam kapasitenin yuzde 60'ina ulastiginda agresif bir flush'lamaya basla.<br /> ceph osd pool set rbdssd cache_target_dirty_high_ratio 0.6<br /> <br /> * Sabit kalan objeler kapasitenin yuzde sekseni oldugunda bu objeleri flush etmeye basla.<br /> ceph osd pool set rbdssd cache_target_full_ratio 0.8<br /> <br /> * Obje degistikten 10dk sonra flush et.<br /> ceph osd pool set rbdssd cache_min_flush_age 600<br /> <br /> * Cache'te yer alan ve 30 dk dir erisilmeyen objeleri cikar. (evict)<br /> ceph osd pool set rbdssd cache_min_evict_age 1800<br /> <br /> * 1 cache pools are missing hit_sets hatasini onlemek icin<br /> ceph osd pool set OpenstackCachedRBD hit_set_type bloom<br /> <br /> ### KALDIRMAK icin ###<br /> uzerindeki verileri flush etmek icin;<br /> ceph osd tier cache-mode rbdssd forward --yes-i-really-mean-it<br /> <br /> ne kadar obje olduguna bakilir,<br /> rados -p rbdssd ls<br /> <br /> hala cok sayida var ise elle flush edilir.<br /> rados -p rbdssd cache-flush-evict-all<br /> <br /> ceph df komutu ile o pool'da yer alan obje sayisina bakilir. Surekli azalmasi gereklidir.<br /> ceph osd tier remove-overlay rbdperftest<br /> ceph osd tier remove rbdperftest rbdssd</div>

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