<html><head><meta http-equiv="content-type" content="text/html; charset=GB2312"><style>body { line-height: 1.5; }p { margin-top: 0px; margin-bottom: 0px; }body { font-size: 10.5pt; font-family: 微软雅黑; color: rgb(0, 0, 0); line-height: 1.5; }body { font-size: 10.5pt; font-family: 微软雅黑; color: rgb(0, 0, 0); line-height: 1.5; }</style></head><body> <div><span></span></div><div><span><div style="MARGIN: 10px; FONT-FAMILY: verdana; FONT-SIZE: 10pt"><div style="font-family: 微软雅黑;">hi:</div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0);"> I have some problems about multipath for EMC CX700,the EMC checker indicated "</span><span style="background-color: rgba(0, 0, 0, 0); font-size: 10pt; line-height: 1.5;">SG_INFO_OK_MASK</span><span style="background-color: rgba(0, 0, 0, 0); font-size: 10pt; line-height: 1.5;">".but there is no kernel info indicated that the status, driver status or host status was failed.And next checker will up the path immediately.So i think there should be a "retry" checker to insure the path is really down.</span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0); font-size: 10pt; line-height: 1.5;"><br></span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0); font-size: 10pt; line-height: 1.5;"><br></span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0); font-size: 10pt; line-height: 1.5;">The message:</span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0);">Mar 16 19:38:23 node7 sshd[19867]: Accepted password for root from 10.165.14.194 port 59421 ssh2 <br>Mar 16 19:46:14 node7 : error initializing: No module named up2date_client.up2dateAuth <br>Mar 16 19:46:57 node7 multipathd: sdb: emc_clariion_checker: query command indicates error <br>Mar 16 19:46:57 node7 multipathd: checker failed path 8:16 in map mpath4 <br>Mar 16 19:46:57 node7 kernel: [11120.924573] qla2xxx 0000:82:00.0: scsi(4:0:0): Abort command issued -- 1 4a1 2002. <br>Mar 16 19:46:57 node7 kernel: [11120.925307] device-mapper: multipath: Failing path 8:16. <br>Mar 16 19:46:57 node7 multipathd: mpath4: remaining active paths: 1 <br>Mar 16 19:46:57 node7 multipathd: mpath4: switch to path group #2 <br>Mar 16 19:47:02 node7 multipathd: sdb: emc_clariion_checker: Path healthy <br>Mar 16 19:47:02 node7 multipathd: 8:16: reinstated <br>Mar 16 19:47:02 node7 multipathd: mpath4: remaining active paths: 2 <br>Mar 16 19:47:02 node7 multipathd: mpath4: switch to path group #1</span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0);"><br></span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0);">The diff:</span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0);">--- libcheckers/emc_clariion.c.old 2015-04-13 09:31:04.000000000 +0800 <br>+++ libcheckers/emc_clariion.c 2015-04-13 09:34:47.000000000 +0800 <br>@@ -40,6 +40,8 @@ <br> <br> int emc_clariion(struct checker * c) <br> { <br>+ int retrytimes = 3; <br>+ <br> unsigned char sense_buffer[256] = { 0, }; <br> unsigned char sb[128] = { 0, }; <br> unsigned char inqCmdBlk[INQUIRY_CMDLEN] = {INQUIRY_CMD, 1, 0xC0, 0, <br>@@ -59,12 +61,18 @@ <br> io_hdr.sbp = sb; <br> io_hdr.timeout = DEF_TIMEOUT; <br> io_hdr.pack_id = 0; <br>+ <br>+retry: <br> if (ioctl(c->fd, SG_IO, &io_hdr) < 0) { <br> MSG(c, "emc_clariion_checker: sending query command failed"); <br> return PATH_DOWN; <br> } <br> if (io_hdr.info & SG_INFO_OK_MASK) { <br> MSG(c, "emc_clariion_checker: query command indicates error"); <br>+ if(retrytimes){</span></div><div style="font-family: 微软雅黑;">+ retrytimes--; <span style="background-color: rgba(0, 0, 0, 0);"><br>+ goto retry; <br>+ } <br> return PATH_DOWN; <br> } <br> if (/* Verify the code page - right page & revision */</span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0);"><br></span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0);"><br></span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0);"><br></span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0);"><br></span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0);"><br></span></div><div style="font-family: 微软雅黑;"><span style="background-color: rgba(0, 0, 0, 0);">I don`t think my modification is good enough,so i hope you can give me some useful ideas to make it better.</span></div><div><div style="position: static !important;"><div style="position: static !important;"><div style="position: static !important;"><div style="position: static !important;"><p class="MsoNormal" style="margin-top: 0px; margin-bottom: 0px;"><br></p></div></div></div></div></div></div></span></div> </body></html>