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authorgrog <grog@FreeBSD.org>1999-01-27 03:14:28 +0000
committergrog <grog@FreeBSD.org>1999-01-27 03:14:28 +0000
commit493df803ae17e9de75335328366e42dab3c20a3d (patch)
treee9251a6c7007bd432ff0d1c3714ac6a62c4dd041 /share/man/man4/vinum.4
parent64319ac5b9a438791cc7ae1ecbb36e33090e46fa (diff)
downloadFreeBSD-src-493df803ae17e9de75335328366e42dab3c20a3d.zip
FreeBSD-src-493df803ae17e9de75335328366e42dab3c20a3d.tar.gz
Get rid of tbl stuff, replace with .Bl
Take BUGS section from vinum.8
Diffstat (limited to 'share/man/man4/vinum.4')
-rw-r--r--share/man/man4/vinum.4348
1 files changed, 97 insertions, 251 deletions
diff --git a/share/man/man4/vinum.4 b/share/man/man4/vinum.4
index f155ee3..9c99068 100644
--- a/share/man/man4/vinum.4
+++ b/share/man/man4/vinum.4
@@ -556,276 +556,123 @@ uses this state to determine the handling of the object.
.Ss VOLUME STATES
Volumes may have the following states:
.sp
-.ne 1i
-.TB "Volume states"
-.TS H
-box,center,tab(#) ;
-lfCWp9 | lw65 .
-State#Meaning
-=
-volume_unallocated#T{
-present but unused. This will not normally be seen from a user perspective.
-T}
-volume_uninit#T{
-In the process of being created.
-T}
-volume_down#T{
-The volume is inaccessible.
-T}
-volume_up#T{
-The volume is up and functional, but not all plexes may be available.
-T}
-
-.TE
-.TS H
-box,center,tab(#) ;
-lfCWp9 | lw65 .
-State#Meaning
-=
-volume_unallocated#T{
-present but unused. This will not normally be seen from a user perspective.
-T}
-.if t .sp .4v
-.if n .sp 1
-volume_uninit#T{
-In the process of being created.
-T}
-.if t .sp .4v
-.if n .sp 1
-volume_down#T{
-The volume is inaccessible.
-T}
-.if t .sp .4v
-.if n .sp 1
-volume_up#T{
-The volume is up and functional, but not all plexes may be available.
-T}
-.if t .sp .4v
-.if n .sp 1
-.TE
-.sp 2v
+.Bl -hang -width 14n
+.It volume_down
+The volume is completely inaccessible.
+.It volume_up
+The volume is up and at least partially functional. Not all plexes may be
+available.
+.El
.Ss "PLEX STATES"
Plexes may have the following states:
.sp
.ne 1i
-.TB "Plex states"
-.TS H
-box,center,tab(#) ;
-lfCWp9 | lw65 .
-State#Meaning
-=
-plex_unallocated#T{
-An empty entry, not a plex at all.
-T}
-.if t .sp .4v
-.if n .sp 1
-plex_checkup#T{
-Temporary state: check subordinate subdisks to decide which state we can take.
-The options are plex_error (no subdisks), plex_corrupted (not all subdisks, and
-we were down), plex_degraded (not all subdisks, and we were up), plex_up (all
-subdisks)
-T}
-.if t .sp .4v
-.if n .sp 1
-plex_checkdown#T{
-Temporary state: check our previous state to decide whether we should go to down
-or error state.
-T}
-.if t .sp .4v
-.if n .sp 1
-plex_uninit#T{
-A plex entry which has not been created completely. Some fields may be empty.
-T}
-.if t .sp .4v
-.if n .sp 1
-plex_init#T{
-All fields are correct, and the disk has been
-updated, but there is no data on the disk.
-T}
-.if t .sp .4v
-.if n .sp 1
-plex_error#T{
+.Bl -hang -width 14n
+.It faulty
A plex which has gone completely down because of I/O errors.
-T}
-.if t .sp .4v
-.if n .sp 1
-plex_down#T{
-A plex which has been taken down by the
-administrator.
-T}
-.if t .sp .4v
-.if n .sp 1
-#T{
-The remaining states represent plexes which are
-at least partially up. Keep these separate so that
-they can be checked more easily.
-T}
-.if t .sp .4v
-.if n .sp 1
-plex_corrupted#T{
+.It down
+A plex which has been taken down by the administrator.
+.It initializing
+A plex which is being initialized.
+.sp
+The remaining states represent plexes which are at least partially up.
+.It corrupt
A plex entry which is at least partially up. Not all subdisks are available,
and an inconsistency has occurred. If no other plex is uncorrupted, the volume
is no longer consistent.
-T}
-.if t .sp .4v
-.if n .sp 1
-plex_degraded#T{
-A plex entry which is at least partially up. Not all subdisks are available,
-but so far no inconsistency has occurred (this will change with the first write
-to the address space occupied by a defective subdisk). This state includes the
-condition where a subdisk is being copied.
-T}
-.if t .sp .4v
-.if n .sp 1
-plex_flaky#T{
+.It degraded
+A RAID-5 plex entry which is accessible, but one subdisk is down, requiring
+recovery for many I/O requests.
+.It flaky
A plex which is really up, but which has a reborn subdisk which we don't
-completely trust, and which we don't want to read if we can avoid it
-T}
-.if t .sp .4v
-.if n .sp 1
-plex_up#T{
-A plex entry which is completely up. All subdisks
-are up.
-T}
-.if t .sp .4v
-.if n .sp 1
-.TE
+completely trust, and which we don't want to read if we can avoid it.
+.It up
+A plex entry which is completely up. All subdisks are up.
+.El
.sp 2v
.Ss "SUBDISK STATES"
Subdisks can have the following states:
.sp
.ne 1i
-.TB "Subdisk states"
-.TS H
-box,center,tab(#) ;
-lfCWp9 | lw65 .
-State#Meaning
-=
-sd_unallocated#T{
-An empty entry, not a subdisk at all.
-T}
-.if t .sp .4v
-.if n .sp 1
-sd_uninit#T{
-A subdisk entry which has not been created
-completely. Some fields may be empty.
-T}
-.if t .sp .4v
-.if n .sp 1
-sd_init#T{
-A subdisk entry which has been created completely.
-All fields are correct, but the disk hasn't
-been updated.
-T}
-.if t .sp .4v
-.if n .sp 1
-sd_empty#T{
-A subdisk entry which has been created completely.
-All fields are correct, and the disk has been
-updated, but there is no data on the disk.
-T}
-.if t .sp .4v
-.if n .sp 1
-sd_obsolete#T{
-A subdisk entry which has been created completely.
-All fields are correct, the disk has been updated,
-and the data was valid, but since then the drive
-has gone down, and as a result updates have been
-missed.
-T}
-.if t .sp .4v
-.if n .sp 1
-sd_stale#T{
-A subdisk entry which has been created completely.
-All fields are correct, the disk has been updated,
-and the data was valid, but since then the drive
-has gone down, updates have been lost, and then
-the drive came up again.
-T}
-.if t .sp .4v
-.if n .sp 1
-#T{
-The following states represent valid, inaccessible data
-T}
-.if t .sp .4v
-.if n .sp 1
-sd_crashed#T{
-A subdisk entry which has been created completely.
-All fields are correct, the disk has been updated,
-and the data was valid, but since then the drive
-has gone down. No attempt has been made to write
-to the subdisk since the crash.
-T}
-.if t .sp .4v
-.if n .sp 1
-sd_down#T{
-A subdisk entry which was up, which contained
-valid data, and which was taken down by the
-administrator. The data is valid.
-T}
-.if t .sp .4v
-.if n .sp 1
-sd_reborn#T{
-A subdisk entry which has been created completely.
-All fields are correct, the disk has been updated,
-and the data was valid, but since then the drive
-has gone down and up again. No updates were lost,
-but it is possible that the subdisk has been
-damaged. We won't read from this subdisk if we
-have a choice.
-T}
-.if t .sp .4v
-.if n .sp 1
-sd_up#T{
-A subdisk entry which has been created completely.
-All fields are correct, the disk has been updated,
-and the data is valid.
-T}
-.if t .sp .4v
-.if n .sp 1
-.TE
+.Bl -hang -width 14n
+.It empty
+A subdisk entry which has been created completely. All fields are correct, and
+the disk has been updated, but there is no data on the disk.
+.It initializing
+A subdisk entry which has been created completely and which is currently being
+initialized.
+.sp
+The following states represent invalid data.
+.It obsolete
+A subdisk entry which has been created completely. All fields are correct, the
+config on disk has been updated, and the data was valid, but since then the
+drive has been taken down, and as a result updates have been missed.
+.It stale
+A subdisk entry which has been created completely. All fields are correct, the
+disk has been updated, and the data was valid, but since then the drive has been
+crashed and updates have been lost.
+.sp
+The following states represent valid, inaccessible data.
+.It crashed
+A subdisk entry which has been created completely. All fields are correct, the
+disk has been updated, and the data was valid, but since then the drive has gone
+down. No attempt has been made to write to the subdisk since the crash, so the
+data is valid.
+.It down
+A subdisk entry which was up, which contained valid data, and which was taken
+down by the administrator. The data is valid.
+.It reviving
+The subdisk is currently in the process of being revived. We can write but not
+read.
+.sp
+The following states represent accessible subdisks with valid data.
+.It reborn
+A subdisk entry which has been created completely. All fields are correct, the
+disk has been updated, and the data was valid, but since then the drive has gone
+down and up again. No updates were lost, but it is possible that the subdisk
+has been damaged. We won't read from this subdisk if we have a choice. If this
+is the only subdisk which covers this address space in the plex, we set its
+state to up under these circumstances, so this status implies that there is
+another subdisk to fulfil the request.
+.It up
+A subdisk entry which has been created completely. All fields are correct, the
+disk has been updated, and the data is valid.
+.El
.sp 2v
.Ss "DRIVE STATES"
Drives can have the following states:
.sp
.ne 1i
-.TB "Drive states"
-.TS H
-box,center,tab(#) ;
-lfCWp9 | lw65 .
-State#Meaning
-=
-drive_unallocated#T{
-Unused entry.
-T}
-.if t .sp .4v
-.if n .sp 1
-drive_uninit#T{
-just mentioned in some other config entry.
-T}
-.if t .sp .4v
-.if n .sp 1
-drive_down#T{
-not accessible
-T}
-.if t .sp .4v
-.if n .sp 1
-drive_coming_up#T{
-in the process of being brought up
-T}
-.if t .sp .4v
-.if n .sp 1
-drive_up#up and running
-.TE
+.Bl -hang -width 14n
+.It down
+The drive is not accessible.
+.It up
+The drive is up and running.
+.El
.sp 2v
.Sh BUGS AND OMISSIONS
-Many.
-.Nm vinum
-is currently in beta test. Please report any bugs not in the list below to
-.Ar <grog@lemis.com> .
-.sp
-The following functions are known to be deficient or not implemented:
-.Bl -bullet
+.Bl -enum
+.It
+.Nm
+is a new product. Many bugs can be expected. The configuration mechanism is
+not yet fully functional. If you have difficulties, please look at
+http://www.lemis.com/vinum_beta.html and
+http://www.lemis.com/vinum_debugging.html before reporting problems.
+.It
+It is possible to unload the
+.Nm
+module with the
+.Nm kldunload
+command. This is buggy, and the only reason it is present at all is to make it
+easier for people testing the system: the alternative is a reboot. It works
+about 80% of the time: expect about one panic every five unloads.
+.It
+It is possible to configure
+.Nm
+statically, but it has never been tested in this form. Don't even bother to
+report the problem if you have trouble with a static
+.Nm
+pseudo-device, unless you can also repeat it with the kld module.
.It
It is necessary to initialize RAID-5 plexes. Failure to do so will not impede
normal operation, but it will cause complete corruption if one of the disks
@@ -833,7 +680,7 @@ should fail. I don't know any good way to enforce this initialization (or the
even slower alternative of rebuilding the parity blocks). If anybody has a good
idea, I'd be grateful for input.
.It
-Det ection of differences between the version of the kernel and the kld is not
+Detection of differences between the version of the kernel and the kld is not
yet implemented.
.El
.Sh AUTHOR
@@ -846,4 +693,3 @@ first appeared in FreeBSD 3.0.
.Xr vinum 8 ,
.Xr disklabel 5 ,
.Xr disklabel 8 .
-
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