Date: Fri, 19 Feb 2016 20:58:21 -0500 (EST) From: Rick Macklem <rmacklem@uoguelph.ca> To: lev@FreeBSD.org Cc: freebsd-fs@freebsd.org Subject: Re: Panic in NFS client on CURRENT Message-ID: <571539848.4340752.1455933501390.JavaMail.zimbra@uoguelph.ca> In-Reply-To: <56C752CD.4090203@FreeBSD.org> References: <56C752CD.4090203@FreeBSD.org>
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Lev wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > > I've hit panic in NFSv4 client on fresh CURRENT, which looks like bug > 206634. > I took a look and this appears to have been introduced by r285632, which changed vfs_hash_get() to no longer VI_LOCK() the vnode. I'm not sure, but I think you can just delete/comment out the test for the VI_INTERLOCK and subsequent panic. (line#3371,3372 in sys/fs/nfsclient/nfs_clvnops.c in head). It should only happen when the server goes into state recovery mode after a server reboot or network partitioning from clients. (As I mentioned in PR#206634, these recoveries should be avoided whenever possible. If a scheduled restart of an NFSv4 server is done, all clients should be unmounted before the reboot, if at all practical.) However, I think the panic() is now just bogus and should be removed. rick > I have core saved and could provide additional information. > > - -- > // Lev Serebryakov > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2 > > iQJ8BAEBCgBmBQJWx1LNXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w > ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRGOTZEMUNBMEI1RjQzMThCNjc0QjMzMEFF > QUIwM0M1OEJGREM0NzhGAAoJEOqwPFi/3EeP5RQP+gIqYjxZKpUk+sxAoE1Tds1K > BOkBPeFPj38FuaWUFN3LmM2HH3DZpjjScHa3WUeNov7KNduBTnBB0QJbYUOmXThg > 9ggOExQR+Cjci1YmBBa/8m8Naeik0wza0XmdbUlzx/qMyfpEMPmITZqq9X+/dcbb > 7xxpwUTveR3mZc9z7yS6qFDN+oqUMILFF08jq3B+715My0f2urBSBNqP4CJ5lc/a > sTNo2jTZG9PWug7blVIX03cX/hwVz9Wa3io+p5XNF+8ZGq2b+86sSPYf/6FjPWh3 > g/pMfX+cVYiOVsyWewASnRKse4S2my5gZ4OTbtrnMjOhFPhDbacM65XBdKSBIQDK > IXEsod+YvyMB+cBjvReyErLV0KoYkY/u5TzfaVuSAvKZ+MwuFSo57m6u2XSG/Z5f > XBvcTElIvFf78ZAmqJ5heyJSgONUKEUDo17w74Um6l3d0gP2QZDVrx5QF6hLb7Tx > ssepvE9DIEOijImBkn78QbxRaJzqXLYckxp1LPM0XtspbjoZImfLrCm8jE3RQJFs > cIcNCE9iWR0DD1fgSl7C/eifljfkSxF8hKf601ZYtweXZ89OWCh/HP3O8TfS0Fj/ > 9vOHdtC/AtCMQVHU1kdRyvjRCrpjVQV5WweCf1q641DSXuHkSIhWz2rfueX4I187 > BUokRbH5pntYoubADtmN > =y6WT > -----END PGP SIGNATURE----- > _______________________________________________ > freebsd-fs@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >
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