| Message ID | d63c4427d1dc9db3c18a07cb9098459de242fbd3.1698712764.git.anand.jain@oracle.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | btrfs/219 cloned-device mount capability update | expand |
On Thu, Nov 02, 2023 at 07:28:18PM +0800, Anand Jain wrote: > Currently _fs_sysfs_dname gets fsid from the findmnt command however > this command provides the metadata_uuid if the device is mounted with > temp-fsid. So instead, use btrfs filesystem show command to know the fsid. > > Signed-off-by: Anand Jain <anand.jain@oracle.com> > Reviewed-by: Filipe Manana <fdmanana@suse.com> > --- > v3: add local variable fsid > > common/rc | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/common/rc b/common/rc > index 259a1ffb09b9..7f14c19ca89e 100644 > --- a/common/rc > +++ b/common/rc > @@ -4721,6 +4721,7 @@ _require_statx() > _fs_sysfs_dname() > { > local dev=$1 > + local fsid > > if [ ! -b "$dev" ]; then > _fail "Usage: _fs_sysfs_dname <mounted_device>" > @@ -4728,7 +4729,9 @@ _fs_sysfs_dname() > > case "$FSTYP" in > btrfs) > - findmnt -n -o UUID ${dev} ;; > + fsid=$($BTRFS_UTIL_PROG filesystem show ${dev} | grep uuid: | \ > + $AWK_PROG '{print $NF}') This could be also added as a subcommand to 'inspect-internal', ie. from a file to it's filesystem uuid, then it should be easy to get any other id if needed through the sysfs directory.
On 11/3/23 04:00, David Sterba wrote: > On Thu, Nov 02, 2023 at 07:28:18PM +0800, Anand Jain wrote: >> Currently _fs_sysfs_dname gets fsid from the findmnt command however >> this command provides the metadata_uuid if the device is mounted with >> temp-fsid. So instead, use btrfs filesystem show command to know the fsid. >> >> Signed-off-by: Anand Jain <anand.jain@oracle.com> >> Reviewed-by: Filipe Manana <fdmanana@suse.com> >> --- >> v3: add local variable fsid >> >> common/rc | 5 ++++- >> 1 file changed, 4 insertions(+), 1 deletion(-) >> >> diff --git a/common/rc b/common/rc >> index 259a1ffb09b9..7f14c19ca89e 100644 >> --- a/common/rc >> +++ b/common/rc >> @@ -4721,6 +4721,7 @@ _require_statx() >> _fs_sysfs_dname() >> { >> local dev=$1 >> + local fsid >> >> if [ ! -b "$dev" ]; then >> _fail "Usage: _fs_sysfs_dname <mounted_device>" >> @@ -4728,7 +4729,9 @@ _fs_sysfs_dname() >> >> case "$FSTYP" in >> btrfs) >> - findmnt -n -o UUID ${dev} ;; >> + fsid=$($BTRFS_UTIL_PROG filesystem show ${dev} | grep uuid: | \ >> + $AWK_PROG '{print $NF}') > > This could be also added as a subcommand to 'inspect-internal', ie. from > a file to it's filesystem uuid, then it should be easy to get any other > id if needed through the sysfs directory. Thanks for the feedback. I'll create a separate patch for the 'get_btrfs_fsid' helper, making it possible to merge this series with RB. Thanks Anand
diff --git a/common/rc b/common/rc index 259a1ffb09b9..7f14c19ca89e 100644 --- a/common/rc +++ b/common/rc @@ -4721,6 +4721,7 @@ _require_statx() _fs_sysfs_dname() { local dev=$1 + local fsid if [ ! -b "$dev" ]; then _fail "Usage: _fs_sysfs_dname <mounted_device>" @@ -4728,7 +4729,9 @@ _fs_sysfs_dname() case "$FSTYP" in btrfs) - findmnt -n -o UUID ${dev} ;; + fsid=$($BTRFS_UTIL_PROG filesystem show ${dev} | grep uuid: | \ + $AWK_PROG '{print $NF}') + echo $fsid ;; *) _short_dev $dev ;; esac