[DRBD-user] Out of sync blocks in DRBD 8.4.6

Athanasios Pantinakis athanasios.pantinakis at mavenir.com
Mon Dec 10 17:32:14 CET 2018

Dear DRBD community,

I was wondering if anyone has faced significant amount of out of sync blocks in DRBD 8.4.6 and how did they resolve such issues. I have tried to disabled LVM cache but situation remains the same. Would adding LVM filter make any difference?

    ns:1394142416 nr:413724 dw:1363095788 dr:284583597 al:688 bm:0 lo:4 pe:163 ua:0 ap:163 ep:1 wo:d oos:44
    ns:416532 nr:1371198592 dw:1371616044 dr:251713761 al:62 bm:0 lo:66 pe:0 ua:65 ap:0 ep:1 wo:d oos:280

    ns:0 nr:1394140816 dw:1394140804 dr:251698144 al:0 bm:0 lo:3 pe:0 ua:4 ap:0 ep:1 wo:d oos:44
    ns:1370787580 nr:415668 dw:1339742876 dr:286452449 al:680 bm:0 lo:0 pe:256 ua:0 ap:256 ep:1 wo:d oos:280

    12960    0 lrwxrwxrwx   1 root     root           11 Nov 27 12:24 /dev/drbd/by-res/r2 -> ../../drbd2
   12949    0 lrwxrwxrwx   1 root     root           11 Nov 27 10:46 /dev/drbd/by-res/r1 -> ../../drbd1

Thank you,

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