<div dir="ltr">It's safest to copy the data off and recreate the filesystem. The domain error in mirror-read reflects the CRC failure that checkmap found. The mirroring code is exiting on that error so you probably don't have a complete mirror copy. I would mount the filesystem and use cpdup to make the copy and see what errors (if any) cpdup reports.<br><br>-Matt<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Jan 31, 2015 at 3:57 AM, Vasily Postnicov <span dir="ltr"><<a href="mailto:shamaz.mazum@gmail.com" target="_blank">shamaz.mazum@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><div>Hello.<br><br></div>I have a possibly damaged HAMMER fs. Look at output of hammer checkmap command:<br><br>ressurected# hammer -f /dev/serno/5VPD5Y9X.s1:/dev/serno/6PT5CW16.s1:/dev/serno/WD-WMASY1750086.s1d checkmap<br>Volume header records=0 next_tid=0000000279fe6800<br> bufoffset=0000000044040000<br>Collecting allocation info from B-Tree: B NODE 80000005221c3000 cnt=32 p=c000000522191000 type=L depth=4 mirror 0000000278289c40 {<br>done<br><br></div>I think this was caused by damaged hardware (overheated CPU).<br><br></div>I do not see any lost/inconsistent data yet, only hammer mirror-read command fails with one of PFSes:<br><br>ressurected# hammer mirror-read /home/shared > /dev/zero<br>Prescan to break up bulk transfer<br>Mirror-read /home/shared failed: Numerical argument out of domain<br><br></div>Can I lose data if I continue to use this fs? May it be cured (e.g. by copying data from /home/shared to newly created PFS and then destroying the old one)?<br><br></div> With best regards, Vasily.<br></div>
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