diff options
Diffstat (limited to 'disk-utils')
| -rw-r--r-- | disk-utils/sfdisk.8 | 5 | ||||
| -rw-r--r-- | disk-utils/sfdisk.c | 15 |
2 files changed, 17 insertions, 3 deletions
diff --git a/disk-utils/sfdisk.8 b/disk-utils/sfdisk.8 index adbd13890..fcde8726b 100644 --- a/disk-utils/sfdisk.8 +++ b/disk-utils/sfdisk.8 @@ -158,6 +158,11 @@ Do everything except writing to the device. .B \-\-no\-reread Do not check through the re-read-partition-table ioctl whether the device is in use. .TP +.B \-\-no\-tell\-kernel +Don't tell the kernel about partition changes. This option is recommended together +with \fB\-\-no\-reread\fR to modify a partition on used disk. The modified partition +should not be used (e.g. mounted). +.TP .BR \-O , " \-\-backup\-file " \fIpath Override the default backup file name. Note that the device name and offset are always appended to the file name. diff --git a/disk-utils/sfdisk.c b/disk-utils/sfdisk.c index a97c5854d..1f14f2c12 100644 --- a/disk-utils/sfdisk.c +++ b/disk-utils/sfdisk.c @@ -110,6 +110,7 @@ struct sfdisk { append : 1, /* don't create new PT, append partitions only */ json : 1, /* JSON dump */ movedata: 1, /* move data after resize */ + notell : 1, /* don't tell kernel aout new PT */ noact : 1; /* do not write to device */ }; @@ -535,11 +536,13 @@ static int write_changes(struct sfdisk *sf) rc = move_partition_data(sf, sf->partno, sf->orig_pa); if (!rc) { fdisk_info(sf->cxt, _("\nThe partition table has been altered.")); - fdisk_reread_partition_table(sf->cxt); + if (!sf->notell) + fdisk_reread_partition_table(sf->cxt); } } if (!rc) - rc = fdisk_deassign_device(sf->cxt, sf->noact); /* no-sync when no-act */ + rc = fdisk_deassign_device(sf->cxt, + sf->noact || sf->notell); /* no-sync */ return rc; } @@ -1824,6 +1827,7 @@ static void __attribute__ ((__noreturn__)) usage(FILE *out) fputs(_(" -N, --partno <num> specify partition number\n"), out); fputs(_(" -n, --no-act do everything except write to device\n"), out); fputs(_(" --no-reread do not check whether the device is in use\n"), out); + fputs(_(" --no-tell-kernel do not tell kernel about changes\n"), out); fputs(_(" -O, --backup-file <path> override default backup file name\n"), out); fputs(_(" -o, --output <list> output columns\n"), out); fputs(_(" -q, --quiet suppress extra info messages\n"), out); @@ -1871,7 +1875,8 @@ int main(int argc, char *argv[]) OPT_BYTES, OPT_COLOR, OPT_MOVEDATA, - OPT_DELETE + OPT_DELETE, + OPT_NOTELL }; static const struct option longopts[] = { @@ -1893,6 +1898,7 @@ int main(int argc, char *argv[]) { "list-types", no_argument, NULL, 'T' }, { "no-act", no_argument, NULL, 'n' }, { "no-reread", no_argument, NULL, OPT_NOREREAD }, + { "no-tell-kernel", no_argument, NULL, OPT_NOTELL }, { "move-data", optional_argument, NULL, OPT_MOVEDATA }, { "output", required_argument, NULL, 'o' }, { "partno", required_argument, NULL, 'N' }, @@ -2059,6 +2065,9 @@ int main(int argc, char *argv[]) case OPT_DELETE: sf->act = ACT_DELETE; break; + case OPT_NOTELL: + sf->notell = 1; + break; default: usage(stderr); } |