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VSAN-Troubleshooting-Reference-Manual

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Diagnostics and <strong>Troubleshooting</strong> <strong>Reference</strong> <strong>Manual</strong> – Virtual SAN<br />

capacity is available, including any newly inserted disks claimed by Virtual<br />

SAN.<br />

If the VM Storage Policy has NumberOfFailuresToTolerate=0, the VMDK will<br />

be inaccessible if one of the VMDK components (think one component of a<br />

stripe or a full mirror) exists on the pulled disk. To restore the VMDK, the<br />

same disk has to be placed back in the ESXi host. There is no option to<br />

recover the VMDK.<br />

Expected behaviors – UI view and log entries:<br />

Removal of a disk will result in the following messages similar to the following<br />

appearing in the vmkernel.log:<br />

2014-09-30T09:44:55.312Z cpu20:32849)WARNING: ScsiPath: 7028: Path lost for adapter<br />

vmhba0 target 1 channel 0 pun 0 2014-09-30T09:44:55.312Z cpu22:33441)WARNING:<br />

LSOMCommon: IORETRY_NotifyAPD:1647: Got APD event 1 on 0x410c0285ca90<br />

2014-09-30T09:44:55.312Z cpu20:32849)WARNING: ScsiDevice: 8820: PDL set on <strong>VSAN</strong> device<br />

path "vmhba0:C0:T1:L0" [...]<br />

2014-09-30T09:44:59.317Z cpu22:33506)WARNING: LSOM: LSOMEventNotify:4581: <strong>VSAN</strong> device<br />

527cfbf5-ae7a-33f6-78bc-beed2f1730dd has gone offline.<br />

It will also result in the following messages appearing in the vobd.log:<br />

2014-09-30T09:44:59.317Z: [VsanCorrelator] 59865017530us: [vob.vsan.pdl.offline] <strong>VSAN</strong><br />

device 527cfbf5-ae7a-33f6-78bc-beed2f1730dd has gone offline.<br />

2014-09-30T09:44:59.317Z: [VsanCorrelator] 59867627549us:<br />

[esx.problem.vob.vsan.pdl.offline] <strong>VSAN</strong> device 527cfbf5-ae7a-33f6-78bc-beed2f1730dd has<br />

gone offline.<br />

Removal of a disk will trigger an event in the vSphere Web Client, under ESX host -><br />

Monitor -> Events. You will find a "<strong>VSAN</strong> device XYZ has gone offline" similar to<br />

what was observed in vobd.log:<br />

V M W A R E S T O R A G E B U D O C U M E N T A T I O N / 63

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