Date: Thu, 30 Apr 2015 11:08:42 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 199804] ZFS: i/o error - all block copies unavailable Message-ID: <bug-199804-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199804 Bug ID: 199804 Summary: ZFS: i/o error - all block copies unavailable Product: Base System Version: 10.1-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: tsoome@me.com Created attachment 156141 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=156141&action=edit zfsimpl.c diff for HOLE issue. the freebsd bootloader zfs code does not check properly for holes (BP_IS_HOLE()) while traversing dnodes, and is calling zio_read() on hole, and as hole does not have data, DVA pointers are 0, and result is error: ZFS: i/o error - all block copies unavailable. the problem is in sys/boot/zfs/zfsimpl.c dnode_get() function; bp should be checked for hole, if it is hole, its zero block and no physical read can be done as there are no physical blocks - instead the zero filled block should be constructed and returned for caller. attached diff as possible fix for this issue. -- You are receiving this mail because: You are the assignee for the bug.
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