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Flag Day for clients of x86 NFS servers

Date: Fri, 4 Nov 2005 12:21:00 -0800
From: Danek Duvall <danek dot duvall at sun dot com>
To: ON/Nevada Gatekeepers <gk at onnv dot eng dot sun dot com>
Subject: Flag Day for clients of x86 NFS servers

[ onnv-gate at onnv dot eng bcc'ed ]

For anyone who has not been seeing odd NFS problems since Monday, you may
ignore this message.

The putback for

    6337437 .zfs doesn't work over NFS

introduced a problem most commonly manifested by the inability to stat NFS
mountpoints that were held open across a server reboot switching from bits
without that bugfix to bits including that bugfix.  These stale mounts were
not cleared automatically, and may have to be cleared by forcing a remount
of the offending mountpoint.  In some cases, a client reboot may be
necessary.

Note that this only affects clients of x86 servers, not sparc.

The putback for

    6345690 nfsv4-test panics: assertion failed: ((((nfs_fh4_fmt_t *)(&cs->fh)->nfs_fh4_val)->fh4_flag) & (2))

in addition to fixing a panic, also returns to the state before 6337437,
and creates another flag-day of the same type.

The first fix came into the gate in time for bits dated 2005-11-01, and the
second fix is in bits dated 2005-11-04.

Apologies for the late notice.

Thanks,
Danek