Hi, just to warm up some older discussions; might your setup be using files opened with O_DIRECT? This allows the modification of buffers in-flight (read: changes while they are being sent to the peer) and is commonly used by some applications to bypass Linux' caching mechanisms.
If you are uncertain, tell us some details about the setup/application stack. Regards, // Veit -------- Ursprüngliche Nachricht -------- Von: Athanasios Pantinakis <athanasios.pantina...@mavenir.com> Gesendet: 11. Dezember 2018 16:19:17 MEZ An: G C <gcst...@gmail.com> CC: "drbd-user@lists.linbit.com" <drbd-user@lists.linbit.com> Betreff: Re: [DRBD-user] [E] Re: Out of sync blocks in DRBD 8.4.6 This definitely works, but then again few days later more OOS blocks are coming up when verify runs. From: G C <gcst...@gmail.com> Sent: Tuesday, December 11, 2018 17:17 To: Athanasios Pantinakis <athanasios.pantina...@mavenir.com> Cc: drbd-user@lists.linbit.com Subject: [E] Re: [DRBD-user] Out of sync blocks in DRBD 8.4.6 Have you tried? drbdadm disconnect <resource> drbdadm connect <resource> On Tue, Dec 11, 2018 at 9:12 AM Athanasios Pantinakis <athanasios.pantina...@mavenir.com<mailto:athanasios.pantina...@mavenir.com>> wrote: 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, Thanos ________________________________ This e-mail message may contain confidential or proprietary information of Mavenir Systems, Inc. or its affiliates and is intended solely for the use of the intended recipient(s). If you are not the intended recipient of this message, you are hereby notified that any review, use or distribution of this information is absolutely prohibited and we request that you delete all copies in your control and contact us by e-mailing to secur...@mavenir.com<mailto:secur...@mavenir.com>. This message contains the views of its author and may not necessarily reflect the views of Mavenir Systems, Inc. or its affiliates, who employ systems to monitor email messages, but make no representation that such messages are authorized, secure, uncompromised, or free from computer viruses, malware, or other defects. Thank You _______________________________________________ drbd-user mailing list drbd-user@lists.linbit.com<mailto:drbd-user@lists.linbit.com> http://lists.linbit.com/mailman/listinfo/drbd-user ________________________________ This e-mail message may contain confidential or proprietary information of Mavenir Systems, Inc. or its affiliates and is intended solely for the use of the intended recipient(s). If you are not the intended recipient of this message, you are hereby notified that any review, use or distribution of this information is absolutely prohibited and we request that you delete all copies in your control and contact us by e-mailing to secur...@mavenir.com. This message contains the views of its author and may not necessarily reflect the views of Mavenir Systems, Inc. or its affiliates, who employ systems to monitor email messages, but make no representation that such messages are authorized, secure, uncompromised, or free from computer viruses, malware, or other defects. Thank You _______________________________________________ drbd-user mailing list drbd-user@lists.linbit.com http://lists.linbit.com/mailman/listinfo/drbd-user