Hi everone, I managed to configure the multipathing devices with device-mapper-multipathing rdac (active-passive), however while system is booting I can see a lot of messages like:
Buffer I/O error on device sdaa, logical block 0 end_request: I/O error, dev sdab, sector 0 end_request: I/O error, dev sdac, sector 0 end_request: I/O error, dev sdad, sector 0 end_request: I/O error, dev sdaf, sector 0 end_request: I/O error, dev sdae, sector 524287992 end_request: I/O error, dev sdz, sector 524287936 end_request: I/O error, dev sdab, sector 0 printk: 6 messages suppressed. Buffer I/O error on device sdab, logical block 0 end_request: I/O error, dev sdac, sector 0 end_request: I/O error, dev sdad, sector 0 end_request: I/O error, dev sdaf, sector 0 end_request: I/O error, dev sdae, sector 524287992 end_request: I/O error, dev sdz, sector 524287984 end_request: I/O error, dev sdab, sector 0 […] Probably nash or something else during startup is checking all the devices (including the passive ones) that cause the very long system startup (we have like 26 FC devices). After startup device multipathig works fine, /dev/mapper is full of aliased devices, but still, from time to time, there are some error messages appering on the console. Like system was checking the passive nodes. Is there any way to prevent such behavior ? Restards, Krzysztof
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