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Subject: [PATCH] libparted: mklabel to support EAV DASD
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From: Nageswara R Sastry <rnsastry@linux.vnet.ibm.com>
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Extended Address Volume (EAV) DASDs are ECKD DASDs with more than
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65520 cylinders. This patch adds support for mklabel to properly
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handle unformatted EAV DASDs.
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Signed-off-by: Nageswara R Sastry <rnsastry@linux.vnet.ibm.com>
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---
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include/parted/fdasd.h | 1
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libparted/labels/fdasd.c | 92 +++++++++++++++++++++++++++++++++++++++++++++-
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2 files changed, 90 insertions(+), 3 deletions(-)
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--- a/include/parted/fdasd.h
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+++ b/include/parted/fdasd.h
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@@ -288,7 +288,6 @@ void fdasd_get_geometry (const PedDevice
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void fdasd_check_api_version (fdasd_anchor_t *anc, int fd);
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int fdasd_check_volume (fdasd_anchor_t *anc, int fd);
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int fdasd_write_labels (fdasd_anchor_t *anc, int fd);
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-int fdasd_invalid_vtoc_pointer(fdasd_anchor_t *anc);
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void fdasd_recreate_vtoc(fdasd_anchor_t *anc);
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partition_info_t * fdasd_add_partition (fdasd_anchor_t *anc,
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unsigned int start, unsigned int stop);
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--- a/libparted/labels/fdasd.c
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+++ b/libparted/labels/fdasd.c
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@@ -581,6 +581,22 @@ fdasd_recreate_vtoc (fdasd_anchor_t *anc
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anc->vtoc_changed++;
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}
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+ /*
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+ * initialize the VOL1 volume label
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+ */
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+static void
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+fdasd_init_volume_label(fdasd_anchor_t *anc, int fd)
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+{
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+ volume_label_t *vlabel = anc->vlabel;
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+
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+ vtoc_volume_label_init(vlabel);
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+ vtoc_volume_label_set_key(vlabel, "VOL1");
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+ vtoc_volume_label_set_label(vlabel, "VOL1");
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+
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+ vtoc_set_cchhb(&vlabel->vtoc, VTOC_START_CC, VTOC_START_HH, 0x01);
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+}
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+
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+
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/*
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* sets some important partition data
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* (like used, start_trk, end_trk, len_trk)
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@@ -769,6 +785,52 @@ fdasd_process_valid_vtoc (fdasd_anchor_t
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fdasd_update_partition_info (anc);
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}
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+static void
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+fdasd_invalid_vtoc_pointer(fdasd_anchor_t *anc)
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+{
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+ PDEBUG
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+ anc->formatted_cylinders = anc->hw_cylinders;
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+ anc->fspace_trk = anc->formatted_cylinders * anc->geo.heads
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+ - FIRST_USABLE_TRK;
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+ vtoc_init_format4_label(anc->f4, USABLE_PARTITIONS,
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+ anc->geo.cylinders, anc->formatted_cylinders,
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+ anc->geo.heads, anc->geo.sectors,
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+ anc->blksize, anc->dev_type);
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+
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+ vtoc_init_format5_label(anc->f5);
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+ vtoc_init_format7_label(anc->f7);
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+
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+ vtoc_set_freespace(anc->f4, anc->f5, anc->f7, '+', anc->verbose,
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+ FIRST_USABLE_TRK,
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+ anc->formatted_cylinders * anc->geo.heads - 1,
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+ anc->formatted_cylinders, anc->geo.heads);
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+
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+ vtoc_set_cchhb(&anc->vlabel->vtoc, VTOC_START_CC, VTOC_START_HH, 0x01);
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+}
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+
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+/*
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+ * we have a invalid FMT4 DSCB and therefore we will re-create the VTOC
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+ */
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+static void
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+fdasd_process_invalid_vtoc(fdasd_anchor_t *anc)
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+{
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+ anc->formatted_cylinders = anc->hw_cylinders;
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+ anc->fspace_trk = anc->formatted_cylinders * anc->geo.heads
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+ - FIRST_USABLE_TRK;
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+ vtoc_init_format4_label(anc->f4, USABLE_PARTITIONS,
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+ anc->geo.cylinders, anc->formatted_cylinders,
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+ anc->geo.heads, anc->geo.sectors,
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+ anc->blksize, anc->dev_type);
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+
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+ vtoc_init_format5_label(anc->f5);
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+ vtoc_init_format7_label(anc->f7);
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+ vtoc_set_freespace(anc->f4, anc->f5, anc->f7, '+', anc->verbose,
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+ FIRST_USABLE_TRK,
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+ anc->formatted_cylinders * anc->geo.heads - 1,
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+ anc->formatted_cylinders, anc->geo.heads);
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+}
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+
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+
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static int
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fdasd_valid_vtoc_pointer(fdasd_anchor_t *anc, unsigned long b, int fd)
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{
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@@ -781,6 +843,8 @@ fdasd_valid_vtoc_pointer(fdasd_anchor_t
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if (anc->f4->DS4IDFMT == 0xf4) {
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fdasd_process_valid_vtoc (anc, b, fd);
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return 0;
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+ } else {
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+ fdasd_process_invalid_vtoc(anc);
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}
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if (strncmp(anc->vlabel->volkey, vtoc_ebcdic_enc("LNX1",str,4),4) == 0 ||
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strncmp(anc->vlabel->volkey, vtoc_ebcdic_enc("CMS1",str,4),4) == 0)
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@@ -817,13 +881,37 @@ fdasd_check_volume (fdasd_anchor_t *anc,
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else
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return 0;
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} else {
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- return 1;
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+ fdasd_invalid_vtoc_pointer(anc);
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}
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} else if (strncmp (v->volkey, vtoc_ebcdic_enc ("LNX1", str, 4), 4) == 0 ||
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strncmp (v->volkey, vtoc_ebcdic_enc ("CMS1", str, 4), 4) == 0) {
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return 0;
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+ } else if (anc->FBA_layout == 1) {
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+ /* Some times LDL formatted disks does not
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+ contain any volume label */
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+ return 1;
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+ } else {
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+ /* didn't find VOL1 volume label */
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+ anc->formatted_cylinders = anc->hw_cylinders;
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+ anc->fspace_trk = anc->formatted_cylinders * anc->geo.heads
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+ - FIRST_USABLE_TRK;
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+
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+ fdasd_init_volume_label(anc, fd);
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+
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+ vtoc_init_format4_label(anc->f4, USABLE_PARTITIONS,
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+ anc->geo.cylinders, anc->formatted_cylinders,
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+ anc->geo.heads, anc->geo.sectors,
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+ anc->blksize, anc->dev_type);
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+
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+ vtoc_init_format5_label(anc->f5);
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+ vtoc_init_format7_label(anc->f7);
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+
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+ vtoc_set_freespace(anc->f4, anc->f5, anc->f7, '+',
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+ anc->verbose, FIRST_USABLE_TRK,
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+ anc->formatted_cylinders * anc->geo.heads - 1,
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+ anc->formatted_cylinders, anc->geo.heads);
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+ return 0;
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}
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-
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return 1;
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}
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