7d0fb9148a
OCFS2 is often used in high-availaibility systems. However, ocfs2 converts the filesystem to read-only at the drop of the hat. This may not be necessary, since turning the filesystem read-only would affect other running processes as well, decreasing availability. This attempt is to add errors=continue, which would return the EIO to the calling process and terminate furhter processing so that the filesystem is not corrupted further. However, the filesystem is not converted to read-only. As a future plan, I intend to create a small utility or extend fsck.ocfs2 to fix small errors such as in the inode. The input to the utility such as the inode can come from the kernel logs so we don't have to schedule a downtime for fixing small-enough errors. The patch changes the ocfs2_error to return an error. The error returned depends on the mount option set. If none is set, the default is to turn the filesystem read-only. Perhaps errors=continue is not the best option name. Historically it is used for making an attempt to progress in the current process itself. Should we call it errors=eio? or errors=killproc? Suggestions/Comments welcome. Sources are available at: https://github.com/goldwynr/linux/tree/error-cont Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com> Signed-off-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* super.h
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*
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* Function prototypes
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*
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* Copyright (C) 2002, 2004 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef OCFS2_SUPER_H
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#define OCFS2_SUPER_H
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extern struct workqueue_struct *ocfs2_wq;
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int ocfs2_publish_get_mount_state(struct ocfs2_super *osb,
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int node_num);
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__printf(3, 4)
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int __ocfs2_error(struct super_block *sb, const char *function,
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const char *fmt, ...);
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#define ocfs2_error(sb, fmt, args...) __ocfs2_error(sb, __PRETTY_FUNCTION__, fmt, ##args)
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__printf(3, 4)
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void __ocfs2_abort(struct super_block *sb, const char *function,
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const char *fmt, ...);
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#define ocfs2_abort(sb, fmt, args...) __ocfs2_abort(sb, __PRETTY_FUNCTION__, fmt, ##args)
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/*
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* Void signal blockers, because in-kernel sigprocmask() only fails
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* when SIG_* is wrong.
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*/
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void ocfs2_block_signals(sigset_t *oldset);
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void ocfs2_unblock_signals(sigset_t *oldset);
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#endif /* OCFS2_SUPER_H */
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