<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>So what do you get if you run:</div><div><br></div><div><!--?xml version="1.0" encoding="UTF-8" standalone="no"?-->
<span style="font-family: Calibri, sans-serif; font-size: 20px; ">mmfsadm test readdescraw </span>/dev/mapper/dh1_vd05_005</div><div><br></div><div>?</div><div><br></div><div><br></div><div><br></div><div><br><div apple-content-edited="true">
Vic Cornell<br><a href="mailto:viccornell@gmail.com">viccornell@gmail.com</a><br><br>
</div>
<br><div><div>On 13 Feb 2013, at 16:29, Chad Kerner <<a href="mailto:ckerner@ncsa.uiuc.edu">ckerner@ncsa.uiuc.edu</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">I have a file system, and it appears that someone dd'd over the first part of one of the NSD's with zero's. I see the device in multipath. I can fdisk and dd the device out.<br><br>Executing od shows it is zero's.<br>(! 21)-> od /dev/mapper/dh1_vd05_005 | head -n 5<br>0000000 000000 000000 000000 000000 000000 000000 000000 000000<br>*<br>0040000 120070 156006 120070 156006 120070 156006 120070 156006<br><br>Dumping the header of one of the other disks shows read data for the other NSD's in that file system.<br><br>(! 25)-> mmlsnsd -m | grep dh1_vd05_005 <br> Disk name NSD volume ID Device Node name Remarks<br>---------------------------------------------------------------------------------------<br> dh1_vd05_005 8D8EEA98506C69CE - myhost (not found) server node<br><br>(! 27)-> mmnsddiscover -d dh1_vd05_005<br>mmnsddiscover: Attempting to rediscover the disks. This may take a while ...<br>myhost: Rediscovery failed for dh1_vd05_005.<br>mmnsddiscover: Finished.<br><br><br>Wed Feb 13 09:14:03.694 2013: Command: mount desarchive<br>Wed Feb 13 09:14:07.101 2013: Disk failure. Volume desarchive. rc = 19. Physical volume dh1_vd05_005.<br>Wed Feb 13 09:14:07.102 2013: File System desarchive unmounted by the system with return code 5 reason code 0<br>Wed Feb 13 09:14:07.103 2013: Input/output error<br>Wed Feb 13 09:14:07.102 2013: Failed to open desarchive.<br>Wed Feb 13 09:14:07.103 2013: Input/output error<br>Wed Feb 13 09:14:07.102 2013: Command: err 666: mount desarchive<br>Wed Feb 13 09:14:07.104 2013: Input/output error<br>Wed Feb 13 09:14:07 CST 2013: mmcommon preunmount invoked. File system: desarchive Reason: SGPanic<br><br>Is there any way to repair the header on the NSD?<br><br>Thanks for any ideas!<br>Chad<br><br><br>_______________________________________________<br>gpfsug-discuss mailing list<br><a href="mailto:gpfsug-discuss@gpfsug.org">gpfsug-discuss@gpfsug.org</a><br>http://gpfsug.org/mailman/listinfo/gpfsug-discuss<br></blockquote></div><br></div></body></html>