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Hello, we've encountered this problem mainly on Android device. The kernel sends a fake signal and the baking storage(flash) is not so fast. I've noticed a typo in my patch for the macro DO_PWRITE in mdb_env_init_meta. The test should be done for EINTR, not EINVAL. Do you want me to resend the patch?
Thanks, Dmytro
On Fri, Apr 17, 2015 at 7:34 PM, Howard Chu hyc@symas.com wrote:
milinevskyy@gmail.com wrote:
Full_Name: Dmytro Milinevskyy Version: OS: Linux URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (92.132.131.166)
On linux systems it's common to have system calls interrupted and restarted. LMDB should retry pwrites to avoid "false" failures.
In practice, writes to a file are "fast" and will always write at least one byte. But we've patched this as suggested, thanks.
-- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/
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<div dir=3D"ltr"><div><div><div>Hello,<br>we've encountered this proble= m mainly on Android device. The kernel sends a fake signal and the baking s= torage(flash) is not so fast.<br>I've noticed a typo in my patch for th= e macro DO_PWRITE in mdb_env_init_meta. The test should be done for EINTR, = not EINVAL.<br></div>Do you want me to resend the patch?<br><br></div>Thank= s,<br></div>Dmytro<br></div><div class=3D"gmail_extra"><br><div class=3D"gm= ail_quote">On Fri, Apr 17, 2015 at 7:34 PM, Howard Chu <span dir=3D"ltr">&l= t;<a href=3D"mailto:hyc@symas.com" target=3D"_blank">hyc@symas.com</a>><= /span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8= ex;border-left:1px #ccc solid;padding-left:1ex"><a href=3D"mailto:milinevsk= yy@gmail.com" target=3D"_blank">milinevskyy@gmail.com</a> wrote:<br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"> Full_Name: Dmytro Milinevskyy<br> Version:<br> OS: Linux<br> URL: <a href=3D"ftp://ftp.openldap.org/incoming/" target=3D"_blank">ftp://f= tp.openldap.org/incoming/</a><br> Submission from: (NULL) (92.132.131.166)<br> <br> <br> On linux systems it's common to have system calls interrupted and resta= rted.<br> LMDB should retry pwrites to avoid "false" failures.<br> </blockquote> <br> In practice, writes to a file are "fast" and will always write at= least one byte. But we've patched this as suggested, thanks.<span clas= s=3D"HOEnZb"><font color=3D"#888888"><br> <br> -- <br> =C2=A0 -- Howard Chu<br> =C2=A0 CTO, Symas Corp.=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"= http://www.symas.com" target=3D"_blank">http://www.symas.com</a><br> =C2=A0 Director, Highland Sun=C2=A0 =C2=A0 =C2=A0<a href=3D"http://highland= sun.com/hyc/" target=3D"_blank">http://highlandsun.com/hyc/</a><br> =C2=A0 Chief Architect, OpenLDAP=C2=A0 <a href=3D"http://www.openldap.org/p= roject/" target=3D"_blank">http://www.openldap.org/project/</a><br> </font></span></blockquote></div><br></div>
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