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c96900435f
Starting with commit 57e734423a
("vsprintf: refactor %pK code out of
pointer"), the behavior of the raw '%p' printk format specifier was
changed to print a 32-bit hash of the pointer value to avoid leaking
kernel pointers into dmesg. For most situations that's good.
This is /undesirable/ behavior when we're trying to debug XFS, however,
so define a PTR_FMT that prints the actual pointer when we're in debug
mode.
Note that %p for tracepoints still prints the raw pointer, so in the
long run we could consider rewriting some of these messages as
tracepoints.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
977 lines
25 KiB
C
977 lines
25 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* 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 License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would 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
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* GNU 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 License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_sb.h"
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#include "xfs_mount.h"
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#include "xfs_defer.h"
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#include "xfs_da_format.h"
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#include "xfs_da_btree.h"
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#include "xfs_inode.h"
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#include "xfs_trans.h"
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#include "xfs_inode_item.h"
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#include "xfs_error.h"
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#include "xfs_btree.h"
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#include "xfs_alloc_btree.h"
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#include "xfs_alloc.h"
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#include "xfs_rmap_btree.h"
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#include "xfs_ialloc.h"
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#include "xfs_fsops.h"
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#include "xfs_itable.h"
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#include "xfs_trans_space.h"
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#include "xfs_rtalloc.h"
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#include "xfs_trace.h"
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#include "xfs_log.h"
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#include "xfs_filestream.h"
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#include "xfs_rmap.h"
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#include "xfs_ag_resv.h"
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/*
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* File system operations
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*/
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static struct xfs_buf *
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xfs_growfs_get_hdr_buf(
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struct xfs_mount *mp,
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xfs_daddr_t blkno,
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size_t numblks,
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int flags,
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const struct xfs_buf_ops *ops)
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{
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struct xfs_buf *bp;
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bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, flags);
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if (!bp)
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return NULL;
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xfs_buf_zero(bp, 0, BBTOB(bp->b_length));
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bp->b_bn = blkno;
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bp->b_maps[0].bm_bn = blkno;
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bp->b_ops = ops;
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return bp;
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}
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static int
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xfs_growfs_data_private(
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xfs_mount_t *mp, /* mount point for filesystem */
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xfs_growfs_data_t *in) /* growfs data input struct */
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{
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xfs_agf_t *agf;
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struct xfs_agfl *agfl;
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xfs_agi_t *agi;
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xfs_agnumber_t agno;
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xfs_extlen_t agsize;
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xfs_extlen_t tmpsize;
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xfs_alloc_rec_t *arec;
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xfs_buf_t *bp;
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int bucket;
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int dpct;
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int error, saved_error = 0;
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xfs_agnumber_t nagcount;
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xfs_agnumber_t nagimax = 0;
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xfs_rfsblock_t nb, nb_mod;
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xfs_rfsblock_t new;
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xfs_rfsblock_t nfree;
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xfs_agnumber_t oagcount;
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int pct;
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xfs_trans_t *tp;
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nb = in->newblocks;
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pct = in->imaxpct;
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if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100)
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return -EINVAL;
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if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb)))
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return error;
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dpct = pct - mp->m_sb.sb_imax_pct;
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error = xfs_buf_read_uncached(mp->m_ddev_targp,
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XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1),
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XFS_FSS_TO_BB(mp, 1), 0, &bp, NULL);
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if (error)
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return error;
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xfs_buf_relse(bp);
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new = nb; /* use new as a temporary here */
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nb_mod = do_div(new, mp->m_sb.sb_agblocks);
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nagcount = new + (nb_mod != 0);
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if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) {
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nagcount--;
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nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks;
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if (nb < mp->m_sb.sb_dblocks)
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return -EINVAL;
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}
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new = nb - mp->m_sb.sb_dblocks;
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oagcount = mp->m_sb.sb_agcount;
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/* allocate the new per-ag structures */
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if (nagcount > oagcount) {
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error = xfs_initialize_perag(mp, nagcount, &nagimax);
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if (error)
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return error;
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}
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error = xfs_trans_alloc(mp, &M_RES(mp)->tr_growdata,
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XFS_GROWFS_SPACE_RES(mp), 0, XFS_TRANS_RESERVE, &tp);
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if (error)
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return error;
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/*
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* Write new AG headers to disk. Non-transactional, but written
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* synchronously so they are completed prior to the growfs transaction
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* being logged.
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*/
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nfree = 0;
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for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) {
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__be32 *agfl_bno;
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/*
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* AG freespace header block
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*/
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bp = xfs_growfs_get_hdr_buf(mp,
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XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
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XFS_FSS_TO_BB(mp, 1), 0,
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&xfs_agf_buf_ops);
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if (!bp) {
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error = -ENOMEM;
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goto error0;
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}
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agf = XFS_BUF_TO_AGF(bp);
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agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC);
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agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION);
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agf->agf_seqno = cpu_to_be32(agno);
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if (agno == nagcount - 1)
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agsize =
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nb -
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(agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks);
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else
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agsize = mp->m_sb.sb_agblocks;
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agf->agf_length = cpu_to_be32(agsize);
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agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp));
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agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp));
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agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1);
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agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1);
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if (xfs_sb_version_hasrmapbt(&mp->m_sb)) {
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agf->agf_roots[XFS_BTNUM_RMAPi] =
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cpu_to_be32(XFS_RMAP_BLOCK(mp));
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agf->agf_levels[XFS_BTNUM_RMAPi] = cpu_to_be32(1);
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agf->agf_rmap_blocks = cpu_to_be32(1);
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}
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agf->agf_flfirst = cpu_to_be32(1);
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agf->agf_fllast = 0;
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agf->agf_flcount = 0;
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tmpsize = agsize - mp->m_ag_prealloc_blocks;
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agf->agf_freeblks = cpu_to_be32(tmpsize);
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agf->agf_longest = cpu_to_be32(tmpsize);
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if (xfs_sb_version_hascrc(&mp->m_sb))
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uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid);
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if (xfs_sb_version_hasreflink(&mp->m_sb)) {
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agf->agf_refcount_root = cpu_to_be32(
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xfs_refc_block(mp));
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agf->agf_refcount_level = cpu_to_be32(1);
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agf->agf_refcount_blocks = cpu_to_be32(1);
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}
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error = xfs_bwrite(bp);
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xfs_buf_relse(bp);
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if (error)
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goto error0;
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/*
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* AG freelist header block
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*/
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bp = xfs_growfs_get_hdr_buf(mp,
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XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)),
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XFS_FSS_TO_BB(mp, 1), 0,
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&xfs_agfl_buf_ops);
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if (!bp) {
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error = -ENOMEM;
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goto error0;
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}
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agfl = XFS_BUF_TO_AGFL(bp);
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if (xfs_sb_version_hascrc(&mp->m_sb)) {
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agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC);
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agfl->agfl_seqno = cpu_to_be32(agno);
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uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_meta_uuid);
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}
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agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, bp);
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for (bucket = 0; bucket < XFS_AGFL_SIZE(mp); bucket++)
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agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK);
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error = xfs_bwrite(bp);
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xfs_buf_relse(bp);
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if (error)
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goto error0;
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/*
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* AG inode header block
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*/
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bp = xfs_growfs_get_hdr_buf(mp,
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XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)),
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XFS_FSS_TO_BB(mp, 1), 0,
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&xfs_agi_buf_ops);
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if (!bp) {
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error = -ENOMEM;
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goto error0;
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}
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agi = XFS_BUF_TO_AGI(bp);
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agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC);
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agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION);
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agi->agi_seqno = cpu_to_be32(agno);
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agi->agi_length = cpu_to_be32(agsize);
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agi->agi_count = 0;
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agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp));
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agi->agi_level = cpu_to_be32(1);
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agi->agi_freecount = 0;
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agi->agi_newino = cpu_to_be32(NULLAGINO);
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agi->agi_dirino = cpu_to_be32(NULLAGINO);
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if (xfs_sb_version_hascrc(&mp->m_sb))
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uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid);
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if (xfs_sb_version_hasfinobt(&mp->m_sb)) {
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agi->agi_free_root = cpu_to_be32(XFS_FIBT_BLOCK(mp));
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agi->agi_free_level = cpu_to_be32(1);
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}
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for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++)
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agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO);
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error = xfs_bwrite(bp);
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xfs_buf_relse(bp);
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if (error)
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goto error0;
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/*
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* BNO btree root block
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*/
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bp = xfs_growfs_get_hdr_buf(mp,
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XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)),
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BTOBB(mp->m_sb.sb_blocksize), 0,
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&xfs_allocbt_buf_ops);
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if (!bp) {
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error = -ENOMEM;
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goto error0;
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}
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xfs_btree_init_block(mp, bp, XFS_BTNUM_BNO, 0, 1, agno, 0);
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arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1);
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arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks);
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arec->ar_blockcount = cpu_to_be32(
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agsize - be32_to_cpu(arec->ar_startblock));
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error = xfs_bwrite(bp);
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xfs_buf_relse(bp);
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if (error)
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goto error0;
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/*
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* CNT btree root block
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*/
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bp = xfs_growfs_get_hdr_buf(mp,
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XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)),
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BTOBB(mp->m_sb.sb_blocksize), 0,
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&xfs_allocbt_buf_ops);
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if (!bp) {
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error = -ENOMEM;
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goto error0;
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}
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xfs_btree_init_block(mp, bp, XFS_BTNUM_CNT, 0, 1, agno, 0);
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arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1);
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arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks);
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arec->ar_blockcount = cpu_to_be32(
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agsize - be32_to_cpu(arec->ar_startblock));
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nfree += be32_to_cpu(arec->ar_blockcount);
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error = xfs_bwrite(bp);
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xfs_buf_relse(bp);
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if (error)
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goto error0;
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/* RMAP btree root block */
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if (xfs_sb_version_hasrmapbt(&mp->m_sb)) {
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struct xfs_rmap_rec *rrec;
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struct xfs_btree_block *block;
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bp = xfs_growfs_get_hdr_buf(mp,
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XFS_AGB_TO_DADDR(mp, agno, XFS_RMAP_BLOCK(mp)),
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BTOBB(mp->m_sb.sb_blocksize), 0,
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&xfs_rmapbt_buf_ops);
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if (!bp) {
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error = -ENOMEM;
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goto error0;
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|
}
|
|
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xfs_btree_init_block(mp, bp, XFS_BTNUM_RMAP, 0, 0,
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agno, 0);
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block = XFS_BUF_TO_BLOCK(bp);
|
|
|
|
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/*
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* mark the AG header regions as static metadata The BNO
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* btree block is the first block after the headers, so
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* it's location defines the size of region the static
|
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* metadata consumes.
|
|
*
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* Note: unlike mkfs, we never have to account for log
|
|
* space when growing the data regions
|
|
*/
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rrec = XFS_RMAP_REC_ADDR(block, 1);
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rrec->rm_startblock = 0;
|
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rrec->rm_blockcount = cpu_to_be32(XFS_BNO_BLOCK(mp));
|
|
rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_FS);
|
|
rrec->rm_offset = 0;
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be16_add_cpu(&block->bb_numrecs, 1);
|
|
|
|
/* account freespace btree root blocks */
|
|
rrec = XFS_RMAP_REC_ADDR(block, 2);
|
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rrec->rm_startblock = cpu_to_be32(XFS_BNO_BLOCK(mp));
|
|
rrec->rm_blockcount = cpu_to_be32(2);
|
|
rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG);
|
|
rrec->rm_offset = 0;
|
|
be16_add_cpu(&block->bb_numrecs, 1);
|
|
|
|
/* account inode btree root blocks */
|
|
rrec = XFS_RMAP_REC_ADDR(block, 3);
|
|
rrec->rm_startblock = cpu_to_be32(XFS_IBT_BLOCK(mp));
|
|
rrec->rm_blockcount = cpu_to_be32(XFS_RMAP_BLOCK(mp) -
|
|
XFS_IBT_BLOCK(mp));
|
|
rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_INOBT);
|
|
rrec->rm_offset = 0;
|
|
be16_add_cpu(&block->bb_numrecs, 1);
|
|
|
|
/* account for rmap btree root */
|
|
rrec = XFS_RMAP_REC_ADDR(block, 4);
|
|
rrec->rm_startblock = cpu_to_be32(XFS_RMAP_BLOCK(mp));
|
|
rrec->rm_blockcount = cpu_to_be32(1);
|
|
rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG);
|
|
rrec->rm_offset = 0;
|
|
be16_add_cpu(&block->bb_numrecs, 1);
|
|
|
|
/* account for refc btree root */
|
|
if (xfs_sb_version_hasreflink(&mp->m_sb)) {
|
|
rrec = XFS_RMAP_REC_ADDR(block, 5);
|
|
rrec->rm_startblock = cpu_to_be32(
|
|
xfs_refc_block(mp));
|
|
rrec->rm_blockcount = cpu_to_be32(1);
|
|
rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_REFC);
|
|
rrec->rm_offset = 0;
|
|
be16_add_cpu(&block->bb_numrecs, 1);
|
|
}
|
|
|
|
error = xfs_bwrite(bp);
|
|
xfs_buf_relse(bp);
|
|
if (error)
|
|
goto error0;
|
|
}
|
|
|
|
/*
|
|
* INO btree root block
|
|
*/
|
|
bp = xfs_growfs_get_hdr_buf(mp,
|
|
XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)),
|
|
BTOBB(mp->m_sb.sb_blocksize), 0,
|
|
&xfs_inobt_buf_ops);
|
|
if (!bp) {
|
|
error = -ENOMEM;
|
|
goto error0;
|
|
}
|
|
|
|
xfs_btree_init_block(mp, bp, XFS_BTNUM_INO , 0, 0, agno, 0);
|
|
|
|
error = xfs_bwrite(bp);
|
|
xfs_buf_relse(bp);
|
|
if (error)
|
|
goto error0;
|
|
|
|
/*
|
|
* FINO btree root block
|
|
*/
|
|
if (xfs_sb_version_hasfinobt(&mp->m_sb)) {
|
|
bp = xfs_growfs_get_hdr_buf(mp,
|
|
XFS_AGB_TO_DADDR(mp, agno, XFS_FIBT_BLOCK(mp)),
|
|
BTOBB(mp->m_sb.sb_blocksize), 0,
|
|
&xfs_inobt_buf_ops);
|
|
if (!bp) {
|
|
error = -ENOMEM;
|
|
goto error0;
|
|
}
|
|
|
|
xfs_btree_init_block(mp, bp, XFS_BTNUM_FINO,
|
|
0, 0, agno, 0);
|
|
|
|
error = xfs_bwrite(bp);
|
|
xfs_buf_relse(bp);
|
|
if (error)
|
|
goto error0;
|
|
}
|
|
|
|
/*
|
|
* refcount btree root block
|
|
*/
|
|
if (xfs_sb_version_hasreflink(&mp->m_sb)) {
|
|
bp = xfs_growfs_get_hdr_buf(mp,
|
|
XFS_AGB_TO_DADDR(mp, agno, xfs_refc_block(mp)),
|
|
BTOBB(mp->m_sb.sb_blocksize), 0,
|
|
&xfs_refcountbt_buf_ops);
|
|
if (!bp) {
|
|
error = -ENOMEM;
|
|
goto error0;
|
|
}
|
|
|
|
xfs_btree_init_block(mp, bp, XFS_BTNUM_REFC,
|
|
0, 0, agno, 0);
|
|
|
|
error = xfs_bwrite(bp);
|
|
xfs_buf_relse(bp);
|
|
if (error)
|
|
goto error0;
|
|
}
|
|
}
|
|
xfs_trans_agblocks_delta(tp, nfree);
|
|
/*
|
|
* There are new blocks in the old last a.g.
|
|
*/
|
|
if (new) {
|
|
struct xfs_owner_info oinfo;
|
|
|
|
/*
|
|
* Change the agi length.
|
|
*/
|
|
error = xfs_ialloc_read_agi(mp, tp, agno, &bp);
|
|
if (error) {
|
|
goto error0;
|
|
}
|
|
ASSERT(bp);
|
|
agi = XFS_BUF_TO_AGI(bp);
|
|
be32_add_cpu(&agi->agi_length, new);
|
|
ASSERT(nagcount == oagcount ||
|
|
be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks);
|
|
xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH);
|
|
/*
|
|
* Change agf length.
|
|
*/
|
|
error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp);
|
|
if (error) {
|
|
goto error0;
|
|
}
|
|
ASSERT(bp);
|
|
agf = XFS_BUF_TO_AGF(bp);
|
|
be32_add_cpu(&agf->agf_length, new);
|
|
ASSERT(be32_to_cpu(agf->agf_length) ==
|
|
be32_to_cpu(agi->agi_length));
|
|
|
|
xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH);
|
|
|
|
/*
|
|
* Free the new space.
|
|
*
|
|
* XFS_RMAP_OWN_NULL is used here to tell the rmap btree that
|
|
* this doesn't actually exist in the rmap btree.
|
|
*/
|
|
xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_NULL);
|
|
error = xfs_rmap_free(tp, bp, agno,
|
|
be32_to_cpu(agf->agf_length) - new,
|
|
new, &oinfo);
|
|
if (error)
|
|
goto error0;
|
|
error = xfs_free_extent(tp,
|
|
XFS_AGB_TO_FSB(mp, agno,
|
|
be32_to_cpu(agf->agf_length) - new),
|
|
new, &oinfo, XFS_AG_RESV_NONE);
|
|
if (error)
|
|
goto error0;
|
|
}
|
|
|
|
/*
|
|
* Update changed superblock fields transactionally. These are not
|
|
* seen by the rest of the world until the transaction commit applies
|
|
* them atomically to the superblock.
|
|
*/
|
|
if (nagcount > oagcount)
|
|
xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount);
|
|
if (nb > mp->m_sb.sb_dblocks)
|
|
xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS,
|
|
nb - mp->m_sb.sb_dblocks);
|
|
if (nfree)
|
|
xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree);
|
|
if (dpct)
|
|
xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct);
|
|
xfs_trans_set_sync(tp);
|
|
error = xfs_trans_commit(tp);
|
|
if (error)
|
|
return error;
|
|
|
|
/* New allocation groups fully initialized, so update mount struct */
|
|
if (nagimax)
|
|
mp->m_maxagi = nagimax;
|
|
if (mp->m_sb.sb_imax_pct) {
|
|
uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct;
|
|
do_div(icount, 100);
|
|
mp->m_maxicount = icount << mp->m_sb.sb_inopblog;
|
|
} else
|
|
mp->m_maxicount = 0;
|
|
xfs_set_low_space_thresholds(mp);
|
|
mp->m_alloc_set_aside = xfs_alloc_set_aside(mp);
|
|
|
|
/*
|
|
* If we expanded the last AG, free the per-AG reservation
|
|
* so we can reinitialize it with the new size.
|
|
*/
|
|
if (new) {
|
|
struct xfs_perag *pag;
|
|
|
|
pag = xfs_perag_get(mp, agno);
|
|
error = xfs_ag_resv_free(pag);
|
|
xfs_perag_put(pag);
|
|
if (error)
|
|
goto out;
|
|
}
|
|
|
|
/* Reserve AG metadata blocks. */
|
|
error = xfs_fs_reserve_ag_blocks(mp);
|
|
if (error && error != -ENOSPC)
|
|
goto out;
|
|
|
|
/* update secondary superblocks. */
|
|
for (agno = 1; agno < nagcount; agno++) {
|
|
error = 0;
|
|
/*
|
|
* new secondary superblocks need to be zeroed, not read from
|
|
* disk as the contents of the new area we are growing into is
|
|
* completely unknown.
|
|
*/
|
|
if (agno < oagcount) {
|
|
error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
|
|
XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
|
|
XFS_FSS_TO_BB(mp, 1), 0, &bp,
|
|
&xfs_sb_buf_ops);
|
|
} else {
|
|
bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp,
|
|
XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
|
|
XFS_FSS_TO_BB(mp, 1), 0);
|
|
if (bp) {
|
|
bp->b_ops = &xfs_sb_buf_ops;
|
|
xfs_buf_zero(bp, 0, BBTOB(bp->b_length));
|
|
} else
|
|
error = -ENOMEM;
|
|
}
|
|
|
|
/*
|
|
* If we get an error reading or writing alternate superblocks,
|
|
* continue. xfs_repair chooses the "best" superblock based
|
|
* on most matches; if we break early, we'll leave more
|
|
* superblocks un-updated than updated, and xfs_repair may
|
|
* pick them over the properly-updated primary.
|
|
*/
|
|
if (error) {
|
|
xfs_warn(mp,
|
|
"error %d reading secondary superblock for ag %d",
|
|
error, agno);
|
|
saved_error = error;
|
|
continue;
|
|
}
|
|
xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb);
|
|
|
|
error = xfs_bwrite(bp);
|
|
xfs_buf_relse(bp);
|
|
if (error) {
|
|
xfs_warn(mp,
|
|
"write error %d updating secondary superblock for ag %d",
|
|
error, agno);
|
|
saved_error = error;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
out:
|
|
return saved_error ? saved_error : error;
|
|
|
|
error0:
|
|
xfs_trans_cancel(tp);
|
|
return error;
|
|
}
|
|
|
|
static int
|
|
xfs_growfs_log_private(
|
|
xfs_mount_t *mp, /* mount point for filesystem */
|
|
xfs_growfs_log_t *in) /* growfs log input struct */
|
|
{
|
|
xfs_extlen_t nb;
|
|
|
|
nb = in->newblocks;
|
|
if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES))
|
|
return -EINVAL;
|
|
if (nb == mp->m_sb.sb_logblocks &&
|
|
in->isint == (mp->m_sb.sb_logstart != 0))
|
|
return -EINVAL;
|
|
/*
|
|
* Moving the log is hard, need new interfaces to sync
|
|
* the log first, hold off all activity while moving it.
|
|
* Can have shorter or longer log in the same space,
|
|
* or transform internal to external log or vice versa.
|
|
*/
|
|
return -ENOSYS;
|
|
}
|
|
|
|
/*
|
|
* protected versions of growfs function acquire and release locks on the mount
|
|
* point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG,
|
|
* XFS_IOC_FSGROWFSRT
|
|
*/
|
|
|
|
|
|
int
|
|
xfs_growfs_data(
|
|
xfs_mount_t *mp,
|
|
xfs_growfs_data_t *in)
|
|
{
|
|
int error;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
if (!mutex_trylock(&mp->m_growlock))
|
|
return -EWOULDBLOCK;
|
|
error = xfs_growfs_data_private(mp, in);
|
|
/*
|
|
* Increment the generation unconditionally, the error could be from
|
|
* updating the secondary superblocks, in which case the new size
|
|
* is live already.
|
|
*/
|
|
mp->m_generation++;
|
|
mutex_unlock(&mp->m_growlock);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
xfs_growfs_log(
|
|
xfs_mount_t *mp,
|
|
xfs_growfs_log_t *in)
|
|
{
|
|
int error;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
if (!mutex_trylock(&mp->m_growlock))
|
|
return -EWOULDBLOCK;
|
|
error = xfs_growfs_log_private(mp, in);
|
|
mutex_unlock(&mp->m_growlock);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* exported through ioctl XFS_IOC_FSCOUNTS
|
|
*/
|
|
|
|
int
|
|
xfs_fs_counts(
|
|
xfs_mount_t *mp,
|
|
xfs_fsop_counts_t *cnt)
|
|
{
|
|
cnt->allocino = percpu_counter_read_positive(&mp->m_icount);
|
|
cnt->freeino = percpu_counter_read_positive(&mp->m_ifree);
|
|
cnt->freedata = percpu_counter_read_positive(&mp->m_fdblocks) -
|
|
mp->m_alloc_set_aside;
|
|
|
|
spin_lock(&mp->m_sb_lock);
|
|
cnt->freertx = mp->m_sb.sb_frextents;
|
|
spin_unlock(&mp->m_sb_lock);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS
|
|
*
|
|
* xfs_reserve_blocks is called to set m_resblks
|
|
* in the in-core mount table. The number of unused reserved blocks
|
|
* is kept in m_resblks_avail.
|
|
*
|
|
* Reserve the requested number of blocks if available. Otherwise return
|
|
* as many as possible to satisfy the request. The actual number
|
|
* reserved are returned in outval
|
|
*
|
|
* A null inval pointer indicates that only the current reserved blocks
|
|
* available should be returned no settings are changed.
|
|
*/
|
|
|
|
int
|
|
xfs_reserve_blocks(
|
|
xfs_mount_t *mp,
|
|
uint64_t *inval,
|
|
xfs_fsop_resblks_t *outval)
|
|
{
|
|
int64_t lcounter, delta;
|
|
int64_t fdblks_delta = 0;
|
|
uint64_t request;
|
|
int64_t free;
|
|
int error = 0;
|
|
|
|
/* If inval is null, report current values and return */
|
|
if (inval == (uint64_t *)NULL) {
|
|
if (!outval)
|
|
return -EINVAL;
|
|
outval->resblks = mp->m_resblks;
|
|
outval->resblks_avail = mp->m_resblks_avail;
|
|
return 0;
|
|
}
|
|
|
|
request = *inval;
|
|
|
|
/*
|
|
* With per-cpu counters, this becomes an interesting problem. we need
|
|
* to work out if we are freeing or allocation blocks first, then we can
|
|
* do the modification as necessary.
|
|
*
|
|
* We do this under the m_sb_lock so that if we are near ENOSPC, we will
|
|
* hold out any changes while we work out what to do. This means that
|
|
* the amount of free space can change while we do this, so we need to
|
|
* retry if we end up trying to reserve more space than is available.
|
|
*/
|
|
spin_lock(&mp->m_sb_lock);
|
|
|
|
/*
|
|
* If our previous reservation was larger than the current value,
|
|
* then move any unused blocks back to the free pool. Modify the resblks
|
|
* counters directly since we shouldn't have any problems unreserving
|
|
* space.
|
|
*/
|
|
if (mp->m_resblks > request) {
|
|
lcounter = mp->m_resblks_avail - request;
|
|
if (lcounter > 0) { /* release unused blocks */
|
|
fdblks_delta = lcounter;
|
|
mp->m_resblks_avail -= lcounter;
|
|
}
|
|
mp->m_resblks = request;
|
|
if (fdblks_delta) {
|
|
spin_unlock(&mp->m_sb_lock);
|
|
error = xfs_mod_fdblocks(mp, fdblks_delta, 0);
|
|
spin_lock(&mp->m_sb_lock);
|
|
}
|
|
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* If the request is larger than the current reservation, reserve the
|
|
* blocks before we update the reserve counters. Sample m_fdblocks and
|
|
* perform a partial reservation if the request exceeds free space.
|
|
*/
|
|
error = -ENOSPC;
|
|
do {
|
|
free = percpu_counter_sum(&mp->m_fdblocks) -
|
|
mp->m_alloc_set_aside;
|
|
if (!free)
|
|
break;
|
|
|
|
delta = request - mp->m_resblks;
|
|
lcounter = free - delta;
|
|
if (lcounter < 0)
|
|
/* We can't satisfy the request, just get what we can */
|
|
fdblks_delta = free;
|
|
else
|
|
fdblks_delta = delta;
|
|
|
|
/*
|
|
* We'll either succeed in getting space from the free block
|
|
* count or we'll get an ENOSPC. If we get a ENOSPC, it means
|
|
* things changed while we were calculating fdblks_delta and so
|
|
* we should try again to see if there is anything left to
|
|
* reserve.
|
|
*
|
|
* Don't set the reserved flag here - we don't want to reserve
|
|
* the extra reserve blocks from the reserve.....
|
|
*/
|
|
spin_unlock(&mp->m_sb_lock);
|
|
error = xfs_mod_fdblocks(mp, -fdblks_delta, 0);
|
|
spin_lock(&mp->m_sb_lock);
|
|
} while (error == -ENOSPC);
|
|
|
|
/*
|
|
* Update the reserve counters if blocks have been successfully
|
|
* allocated.
|
|
*/
|
|
if (!error && fdblks_delta) {
|
|
mp->m_resblks += fdblks_delta;
|
|
mp->m_resblks_avail += fdblks_delta;
|
|
}
|
|
|
|
out:
|
|
if (outval) {
|
|
outval->resblks = mp->m_resblks;
|
|
outval->resblks_avail = mp->m_resblks_avail;
|
|
}
|
|
|
|
spin_unlock(&mp->m_sb_lock);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
xfs_fs_goingdown(
|
|
xfs_mount_t *mp,
|
|
uint32_t inflags)
|
|
{
|
|
switch (inflags) {
|
|
case XFS_FSOP_GOING_FLAGS_DEFAULT: {
|
|
struct super_block *sb = freeze_bdev(mp->m_super->s_bdev);
|
|
|
|
if (sb && !IS_ERR(sb)) {
|
|
xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT);
|
|
thaw_bdev(sb->s_bdev, sb);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case XFS_FSOP_GOING_FLAGS_LOGFLUSH:
|
|
xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT);
|
|
break;
|
|
case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH:
|
|
xfs_force_shutdown(mp,
|
|
SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Force a shutdown of the filesystem instantly while keeping the filesystem
|
|
* consistent. We don't do an unmount here; just shutdown the shop, make sure
|
|
* that absolutely nothing persistent happens to this filesystem after this
|
|
* point.
|
|
*/
|
|
void
|
|
xfs_do_force_shutdown(
|
|
xfs_mount_t *mp,
|
|
int flags,
|
|
char *fname,
|
|
int lnnum)
|
|
{
|
|
int logerror;
|
|
|
|
logerror = flags & SHUTDOWN_LOG_IO_ERROR;
|
|
|
|
if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
|
|
xfs_notice(mp,
|
|
"%s(0x%x) called from line %d of file %s. Return address = "PTR_FMT,
|
|
__func__, flags, lnnum, fname, __return_address);
|
|
}
|
|
/*
|
|
* No need to duplicate efforts.
|
|
*/
|
|
if (XFS_FORCED_SHUTDOWN(mp) && !logerror)
|
|
return;
|
|
|
|
/*
|
|
* This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't
|
|
* queue up anybody new on the log reservations, and wakes up
|
|
* everybody who's sleeping on log reservations to tell them
|
|
* the bad news.
|
|
*/
|
|
if (xfs_log_force_umount(mp, logerror))
|
|
return;
|
|
|
|
if (flags & SHUTDOWN_CORRUPT_INCORE) {
|
|
xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT,
|
|
"Corruption of in-memory data detected. Shutting down filesystem");
|
|
if (XFS_ERRLEVEL_HIGH <= xfs_error_level)
|
|
xfs_stack_trace();
|
|
} else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
|
|
if (logerror) {
|
|
xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR,
|
|
"Log I/O Error Detected. Shutting down filesystem");
|
|
} else if (flags & SHUTDOWN_DEVICE_REQ) {
|
|
xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
|
|
"All device paths lost. Shutting down filesystem");
|
|
} else if (!(flags & SHUTDOWN_REMOTE_REQ)) {
|
|
xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR,
|
|
"I/O Error Detected. Shutting down filesystem");
|
|
}
|
|
}
|
|
if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
|
|
xfs_alert(mp,
|
|
"Please umount the filesystem and rectify the problem(s)");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Reserve free space for per-AG metadata.
|
|
*/
|
|
int
|
|
xfs_fs_reserve_ag_blocks(
|
|
struct xfs_mount *mp)
|
|
{
|
|
xfs_agnumber_t agno;
|
|
struct xfs_perag *pag;
|
|
int error = 0;
|
|
int err2;
|
|
|
|
for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) {
|
|
pag = xfs_perag_get(mp, agno);
|
|
err2 = xfs_ag_resv_init(pag);
|
|
xfs_perag_put(pag);
|
|
if (err2 && !error)
|
|
error = err2;
|
|
}
|
|
|
|
if (error && error != -ENOSPC) {
|
|
xfs_warn(mp,
|
|
"Error %d reserving per-AG metadata reserve pool.", error);
|
|
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Free space reserved for per-AG metadata.
|
|
*/
|
|
int
|
|
xfs_fs_unreserve_ag_blocks(
|
|
struct xfs_mount *mp)
|
|
{
|
|
xfs_agnumber_t agno;
|
|
struct xfs_perag *pag;
|
|
int error = 0;
|
|
int err2;
|
|
|
|
for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) {
|
|
pag = xfs_perag_get(mp, agno);
|
|
err2 = xfs_ag_resv_free(pag);
|
|
xfs_perag_put(pag);
|
|
if (err2 && !error)
|
|
error = err2;
|
|
}
|
|
|
|
if (error)
|
|
xfs_warn(mp,
|
|
"Error %d freeing per-AG metadata reserve pool.", error);
|
|
|
|
return error;
|
|
}
|