6b6e2954dd
Allow users to specify multiple dump configurations in a prioritized list. This enables fallback to secondary device(s) if primary dump fails. E.g., one might configure a preference for netdump, but fallback to disk dump as a second choice if netdump is unavailable. This change does not list-ify netdump configuration, which is tracked separately from ordinary disk dumps internally; only one netdump configuration can be made at a time, for now. It also does not implement IPv6 netdump. savecore(8) is already capable of scanning and iterating multiple devices from /etc/fstab or passed on the command line. This change doesn't update the rc or loader variables 'dumpdev' in any way; it can still be set to configure a single dump device, and rc.d/savecore still uses it as a single device. Only dumpon(8) is updated to be able to configure the more complicated configurations for now. As part of revving the ABI, unify netdump and disk dump configuration ioctl / structure, and leave room for ipv6 netdump as a future possibility. Backwards-compatibility ioctls are added to smooth ABI transition, especially for developers who may not keep kernel and userspace perfectly synced. Reviewed by: markj, scottl (earlier version) Relnotes: maybe Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D19996 |
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| .. | ||
| bde | ||
| cache | ||
| concat | ||
| eli | ||
| gate | ||
| journal | ||
| label | ||
| linux_lvm | ||
| mirror | ||
| mountver | ||
| multipath | ||
| nop | ||
| part | ||
| raid | ||
| raid3 | ||
| sched | ||
| shsec | ||
| stripe | ||
| uzip | ||
| vinum | ||
| virstor | ||
| zero | ||
| geom_bsd_enc.c | ||
| geom_bsd.c | ||
| geom_ccd.c | ||
| geom_ctl.c | ||
| geom_ctl.h | ||
| geom_dev.c | ||
| geom_disk.c | ||
| geom_disk.h | ||
| geom_dump.c | ||
| geom_event.c | ||
| geom_flashmap.c | ||
| geom_flashmap.h | ||
| geom_fox.c | ||
| geom_int.h | ||
| geom_io.c | ||
| geom_kern.c | ||
| geom_map.c | ||
| geom_mbr_enc.c | ||
| geom_mbr.c | ||
| geom_redboot.c | ||
| geom_slice.c | ||
| geom_slice.h | ||
| geom_subr.c | ||
| geom_sunlabel_enc.c | ||
| geom_sunlabel.c | ||
| geom_vfs.c | ||
| geom_vfs.h | ||
| geom_vol_ffs.c | ||
| geom.h | ||
| notes | ||