<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;">Hello Everyone,</span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;"><br></span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;">I just noticed a flag on one of the DRBD resources, as shown below:</span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;"><br></span></div><blockquote style="margin:0 0 0 40px; border:none; padding:0px;"><div style="color: rgb(0, 0, 0); "><font face="Courier" style="font-size: 12px;">[ /]# cat /proc/drbd </font></div><div style="color: rgb(0, 0, 0); "><font face="Courier" style="font-size: 12px;">version: 8.3.13 (api:88/proto:86-96)</font></div><div style="color: rgb(0, 0, 0); "><font face="Courier" style="font-size: 12px;">GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 build by dag@Build64R6, 2012-05-07 11:52:13</font></div><div style="color: rgb(0, 0, 0); "><font face="Courier" style="font-size: 12px;"> 0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----</font></div><div style="color: rgb(0, 0, 0); "><font face="Courier" style="font-size: 12px;"> ns:2081916088 nr:520248 dw:2082436336 dr:1001913178 al:1585314 bm:132 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:0</font></div><div><font face="Courier" style="font-size: 12px;"> 1: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C <font color="#ff0000"><b>r---d-</b></font></font></div><div style="color: rgb(0, 0, 0); "><font face="Courier" style="font-size: 12px;"> ns:1035652 nr:0 dw:1035652 dr:7682 al:270 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:0</font></div></blockquote><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;"><br></span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;">The DRBD manual says about the "d" on the 5th flag:</span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;"><br></span></div><blockquote style="margin:0 0 0 40px; border:none; padding:0px;"><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;"><i>Locally blocked I/O. Normally. May be one of the following flags:</i></span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;"><i><br></i></span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;"><i> <b>d</b>: I/O blocked for a reason internal to DRBD, such as a transient disk state.</i></span></div></blockquote><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;"><br></span></div><div style="color: rgb(0, 0, 0); "><span style="font-size: 12px; "><font face="Calibri,sans-serif">I have checked the logs (</font><font face="Courier">/var/log/messages</font><font face="Calibri,sans-serif">), and there is nothing there from DRBD.</font></span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;"><br></span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;">There server is running on:</span></div><ul><li><span style="font-size: 12px;">CentOS 6.3</span></li><li><span style="font-size: 12px; font-family: Calibri, sans-serif; ">Kernel 2.6.32-220</span></li></ul><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;">Any suggestion on how to find out what is causing that flag to be up?</span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;"><br></span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;">Thanks,</span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;"><br></span></div><div style="font-family: Calibri, sans-serif; color: rgb(0, 0, 0); "><span style="font-size: 12px;">--Marcelo</span></div></div></body></html>