| Message ID | 20230606092806.1604491-12-chandan.babu@oracle.com (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
| Series | Metadump v2 | expand |
On Tue, Jun 06, 2023 at 02:57:54PM +0530, Chandan Babu R wrote: > This commit adds functionality to dump metadata from an XFS filesystem in > newly introduced v2 format. > > Signed-off-by: Chandan Babu R <chandan.babu@oracle.com> > --- > db/metadump.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++--- > 1 file changed, 71 insertions(+), 3 deletions(-) > > diff --git a/db/metadump.c b/db/metadump.c > index b74993c0..537c37f7 100644 > --- a/db/metadump.c > +++ b/db/metadump.c > @@ -3054,6 +3054,70 @@ static struct metadump_ops metadump1_ops = { > .release = release_metadump_v1, > }; > > +static int > +init_metadump_v2(void) > +{ > + struct xfs_metadump_header xmh = {0}; > + uint32_t compat_flags = 0; > + > + xmh.xmh_magic = cpu_to_be32(XFS_MD_MAGIC_V2); > + xmh.xmh_version = 2; Shouldn't this be cpu_to_be32 as well? --D > + > + if (metadump.obfuscate) > + compat_flags |= XFS_MD2_INCOMPAT_OBFUSCATED; > + if (!metadump.zero_stale_data) > + compat_flags |= XFS_MD2_INCOMPAT_FULLBLOCKS; > + if (metadump.dirty_log) > + compat_flags |= XFS_MD2_INCOMPAT_DIRTYLOG; > + > + xmh.xmh_compat_flags = cpu_to_be32(compat_flags); > + > + if (fwrite(&xmh, sizeof(xmh), 1, metadump.outf) != 1) { > + print_warning("error writing to target file"); > + return -1; > + } > + > + return 0; > +} > + > +static int > +write_metadump_v2( > + enum typnm type, > + char *data, > + xfs_daddr_t off, > + int len) > +{ > + struct xfs_meta_extent xme; > + uint64_t addr; > + > + addr = off; > + if (type == TYP_LOG && > + mp->m_logdev_targp->bt_bdev != mp->m_ddev_targp->bt_bdev) > + addr |= XME_ADDR_LOG_DEVICE; > + else > + addr |= XME_ADDR_DATA_DEVICE; > + > + xme.xme_addr = cpu_to_be64(addr); > + xme.xme_len = cpu_to_be32(len); > + > + if (fwrite(&xme, sizeof(xme), 1, metadump.outf) != 1) { > + print_warning("error writing to target file"); > + return -EIO; > + } > + > + if (fwrite(data, len << BBSHIFT, 1, metadump.outf) != 1) { > + print_warning("error writing to target file"); > + return -EIO; > + } > + > + return 0; > +} > + > +static struct metadump_ops metadump2_ops = { > + .init = init_metadump_v2, > + .write = write_metadump_v2, > +}; > + > static int > metadump_f( > int argc, > @@ -3190,7 +3254,10 @@ metadump_f( > } > } > > - metadump.mdops = &metadump1_ops; > + if (metadump.version == 1) > + metadump.mdops = &metadump1_ops; > + else > + metadump.mdops = &metadump2_ops; > > ret = metadump.mdops->init(); > if (ret) > @@ -3214,7 +3281,7 @@ metadump_f( > exitcode = !copy_log(); > > /* write the remaining index */ > - if (!exitcode) > + if (!exitcode && metadump.mdops->end_write) > exitcode = metadump.mdops->end_write() < 0; > > if (metadump.progress_since_warning) > @@ -3234,7 +3301,8 @@ metadump_f( > while (iocur_sp > start_iocur_sp) > pop_cur(); > > - metadump.mdops->release(); > + if (metadump.mdops->release) > + metadump.mdops->release(); > > out: > return 0; > -- > 2.39.1 >
On Wed, Jul 12, 2023 at 10:22:02 AM -0700, Darrick J. Wong wrote: > On Tue, Jun 06, 2023 at 02:57:54PM +0530, Chandan Babu R wrote: >> This commit adds functionality to dump metadata from an XFS filesystem in >> newly introduced v2 format. >> >> Signed-off-by: Chandan Babu R <chandan.babu@oracle.com> >> --- >> db/metadump.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++--- >> 1 file changed, 71 insertions(+), 3 deletions(-) >> >> diff --git a/db/metadump.c b/db/metadump.c >> index b74993c0..537c37f7 100644 >> --- a/db/metadump.c >> +++ b/db/metadump.c >> @@ -3054,6 +3054,70 @@ static struct metadump_ops metadump1_ops = { >> .release = release_metadump_v1, >> }; >> >> +static int >> +init_metadump_v2(void) >> +{ >> + struct xfs_metadump_header xmh = {0}; >> + uint32_t compat_flags = 0; >> + >> + xmh.xmh_magic = cpu_to_be32(XFS_MD_MAGIC_V2); >> + xmh.xmh_version = 2; > > Shouldn't this be cpu_to_be32 as well? > Yes, I will fix this before posting the next version of the patchset.
diff --git a/db/metadump.c b/db/metadump.c index b74993c0..537c37f7 100644 --- a/db/metadump.c +++ b/db/metadump.c @@ -3054,6 +3054,70 @@ static struct metadump_ops metadump1_ops = { .release = release_metadump_v1, }; +static int +init_metadump_v2(void) +{ + struct xfs_metadump_header xmh = {0}; + uint32_t compat_flags = 0; + + xmh.xmh_magic = cpu_to_be32(XFS_MD_MAGIC_V2); + xmh.xmh_version = 2; + + if (metadump.obfuscate) + compat_flags |= XFS_MD2_INCOMPAT_OBFUSCATED; + if (!metadump.zero_stale_data) + compat_flags |= XFS_MD2_INCOMPAT_FULLBLOCKS; + if (metadump.dirty_log) + compat_flags |= XFS_MD2_INCOMPAT_DIRTYLOG; + + xmh.xmh_compat_flags = cpu_to_be32(compat_flags); + + if (fwrite(&xmh, sizeof(xmh), 1, metadump.outf) != 1) { + print_warning("error writing to target file"); + return -1; + } + + return 0; +} + +static int +write_metadump_v2( + enum typnm type, + char *data, + xfs_daddr_t off, + int len) +{ + struct xfs_meta_extent xme; + uint64_t addr; + + addr = off; + if (type == TYP_LOG && + mp->m_logdev_targp->bt_bdev != mp->m_ddev_targp->bt_bdev) + addr |= XME_ADDR_LOG_DEVICE; + else + addr |= XME_ADDR_DATA_DEVICE; + + xme.xme_addr = cpu_to_be64(addr); + xme.xme_len = cpu_to_be32(len); + + if (fwrite(&xme, sizeof(xme), 1, metadump.outf) != 1) { + print_warning("error writing to target file"); + return -EIO; + } + + if (fwrite(data, len << BBSHIFT, 1, metadump.outf) != 1) { + print_warning("error writing to target file"); + return -EIO; + } + + return 0; +} + +static struct metadump_ops metadump2_ops = { + .init = init_metadump_v2, + .write = write_metadump_v2, +}; + static int metadump_f( int argc, @@ -3190,7 +3254,10 @@ metadump_f( } } - metadump.mdops = &metadump1_ops; + if (metadump.version == 1) + metadump.mdops = &metadump1_ops; + else + metadump.mdops = &metadump2_ops; ret = metadump.mdops->init(); if (ret) @@ -3214,7 +3281,7 @@ metadump_f( exitcode = !copy_log(); /* write the remaining index */ - if (!exitcode) + if (!exitcode && metadump.mdops->end_write) exitcode = metadump.mdops->end_write() < 0; if (metadump.progress_since_warning) @@ -3234,7 +3301,8 @@ metadump_f( while (iocur_sp > start_iocur_sp) pop_cur(); - metadump.mdops->release(); + if (metadump.mdops->release) + metadump.mdops->release(); out: return 0;
This commit adds functionality to dump metadata from an XFS filesystem in newly introduced v2 format. Signed-off-by: Chandan Babu R <chandan.babu@oracle.com> --- db/metadump.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 71 insertions(+), 3 deletions(-)