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> * Copyright (c) 2012 by Delphix. All rights reserved.
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> #include <sys/efi_partition.h>
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> static uint64_t
> vdev_disk_get_space(vdev_t *vd, uint64_t capacity, uint_t blksz)
> {
> ASSERT(vd->vdev_wholedisk);
>
> vdev_disk_t *dvd = vd->vdev_tsd;
> dk_efi_t dk_ioc;
> efi_gpt_t *efi;
> uint64_t avail_space = 0;
> int efisize = EFI_LABEL_SIZE * 2;
>
> dk_ioc.dki_data = kmem_alloc(efisize, KM_SLEEP);
> dk_ioc.dki_lba = 1;
> dk_ioc.dki_length = efisize;
> dk_ioc.dki_data_64 = (uint64_t)(uintptr_t)dk_ioc.dki_data;
> efi = dk_ioc.dki_data;
>
> if (ldi_ioctl(dvd->vd_lh, DKIOCGETEFI, (intptr_t)&dk_ioc,
> FKIOCTL, kcred, NULL) == 0) {
> uint64_t efi_altern_lba = LE_64(efi->efi_gpt_AlternateLBA);
>
> zfs_dbgmsg("vdev %s, capacity %llu, altern lba %llu",
> vd->vdev_path, capacity, efi_altern_lba);
> if (capacity > efi_altern_lba)
> avail_space = (capacity - efi_altern_lba) * blksz;
> }
> kmem_free(dk_ioc.dki_data, efisize);
> return (avail_space);
> }
>
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< vdev_disk_open(vdev_t *vd, uint64_t *psize, uint64_t *ashift)
---
> vdev_disk_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize,
> uint64_t *ashift)
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< * If we own the whole disk, try to enable disk write caching.
< * We ignore errors because it's OK if we can't do it.
< */
< if (vd->vdev_wholedisk == 1) {
< int wce = 1;
< (void) ldi_ioctl(dvd->vd_lh, DKIOCSETWCE, (intptr_t)&wce,
< FKIOCTL, kcred, NULL);
< }
<
< /*
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> if (vd->vdev_wholedisk == 1) {
> uint64_t capacity = dkmext.dki_capacity - 1;
> uint64_t blksz = dkmext.dki_lbsize;
> int wce = 1;
>
> /*
> * If we own the whole disk, try to enable disk write caching.
> * We ignore errors because it's OK if we can't do it.
> */
> (void) ldi_ioctl(dvd->vd_lh, DKIOCSETWCE, (intptr_t)&wce,
> FKIOCTL, kcred, NULL);
>
> *max_psize = *psize + vdev_disk_get_space(vd, capacity, blksz);
> zfs_dbgmsg("capacity change: vdev %s, psize %llu, "
> "max_psize %llu", vd->vdev_path, *psize, *max_psize);
> } else {
> *max_psize = *psize;
> }
>