Hammer ghost slave PFS
Hi, I have a ~1TB hammer filesystem with two slave PFSs on it that seems to be using more space than I can account for. I was looking into it when I noticed this in hammer info PFS ID ModeSnaps Mounted on 0 MASTER 3 /data 1 SLAVE 3 not mounted 2 SLAVE 3 not mounted 4 SLAVE 3 not mounted Three slave PFSs listed - but there are only two (unless I'm going crazy). How can I find out which ones are the two I know about and how can I get rid of the extra one ? Would I be best to simply rebuild the filesystem and start again ? This filesystem started life as a version 1 and has been upgraded to version 4 over time so it's seen quite a few versions of DFly since it was first built. -- Steve O'Hara-Smith | Directable Mirror Arrays C:WIN | A better way to focus the sun The computer obeys and wins.|licences available see You lose and Bill collects. |http://www.sohara.org/
Re: Hammer ghost slave PFS
Hi Steve, What is it listed in /pfs dir? Cheers, Antonio Huete 2010/4/11 Steve O'Hara-Smith st...@sohara.org: Hi, I have a ~1TB hammer filesystem with two slave PFSs on it that seems to be using more space than I can account for. I was looking into it when I noticed this in hammer info PFS ID Mode Snaps Mounted on 0 MASTER 3 /data 1 SLAVE 3 not mounted 2 SLAVE 3 not mounted 4 SLAVE 3 not mounted Three slave PFSs listed - but there are only two (unless I'm going crazy). How can I find out which ones are the two I know about and how can I get rid of the extra one ? Would I be best to simply rebuild the filesystem and start again ? This filesystem started life as a version 1 and has been upgraded to version 4 over time so it's seen quite a few versions of DFly since it was first built. -- Steve O'Hara-Smith | Directable Mirror Arrays C:WIN | A better way to focus the sun The computer obeys and wins. | licences available see You lose and Bill collects. | http://www.sohara.org/
Re: Hammer ghost slave PFS
Hi Antonio, There is no /pfs dir - the two slaves were created by hammer mirror-copy and live in fs/backup/ which looks like this: ls -l /data/backup/ total 0 lrwxr-xr-x 1 root wheel 10 Dec 12 06:45 df1.marelmo.com-home - @@0x000878898420:2 lrwxr-xr-x 1 root wheel 10 Feb 4 13:12 steve.marelmo.com-home - @@0x00010af0e2e0:4 On Sun, 11 Apr 2010 10:40:12 +0200 Antonio Huete Jimenez ahuete.de...@gmail.com wrote: Hi Steve, What is it listed in /pfs dir? Cheers, Antonio Huete 2010/4/11 Steve O'Hara-Smith st...@sohara.org: Hi, I have a ~1TB hammer filesystem with two slave PFSs on it that seems to be using more space than I can account for. I was looking into it when I noticed this in hammer info PFS ID Mode Snaps Mounted on 0 MASTER 3 /data 1 SLAVE 3 not mounted 2 SLAVE 3 not mounted 4 SLAVE 3 not mounted Three slave PFSs listed - but there are only two (unless I'm going crazy). How can I find out which ones are the two I know about and how can I get rid of the extra one ? Would I be best to simply rebuild the filesystem and start again ? This filesystem started life as a version 1 and has been upgraded to version 4 over time so it's seen quite a few versions of DFly since it was first built. -- Steve O'Hara-Smith | Directable Mirror Arrays C:WIN | A better way to focus the sun The computer obeys and wins. | licences available see You lose and Bill collects. | http://www.sohara.org/ -- Steve O'Hara-Smith | Directable Mirror Arrays C:WIN | A better way to focus the sun The computer obeys and wins.|licences available see You lose and Bill collects. |http://www.sohara.org/
Re: Hammer ghost slave PFS
Steve,
Can you please try this patch?
diff --git a/sbin/hammer/cmd_info.c b/sbin/hammer/cmd_info.c
index 946d3c8..12e5246 100644
--- a/sbin/hammer/cmd_info.c
+++ b/sbin/hammer/cmd_info.c
@@ -160,7 +160,7 @@ show_info(char *path)
/* Pseudo-filesystem information */
fprintf(stdout, PFS information\n);
- fprintf(stdout, \tPFS ID ModeSnaps Mounted on\n);
+ fprintf(stdout, \tPFS ID ModeSnaps End TID
Mounted on\n);
while(pfs_id HAMMER_MAX_PFS) {
bzero(pfs, sizeof(pfs));
@@ -181,12 +181,15 @@ show_info(char *path)
sc = count_snapshots(fd, info.version, pfs_od.snapshots,
mountedon);
- fprintf(stdout, \t%6d %-6s %6d ,
- pfs_id, (ismaster ? MASTER : SLAVE), sc);
+ fprintf(stdout, \t%6d %-6s %6d 0x%016jx ,
+ pfs_id, (ismaster ? MASTER : SLAVE), sc,
+ pfs.ondisk-sync_end_tid);
+
if (mountedon)
fprintf(stdout, %s, mountedon);
else
fprintf(stdout, not mounted);
+
fprintf(stdout, \n);
}
pfs_id++;
--
This will show the End TID of all PFSs, including your slaves:
9 SLAVE 50 0x00010a543830 not mounted
10 SLAVE 50 0x0001 not mounted
So you could see the status of the PFS slave 9 with this:
# hammer pfs-status /@@0x00010a543830:9
/@@0x00010a543830:9 PFS #9 {
sync-beg-tid=0x0001
sync-end-tid=0x00010a543830
shared-uuid=9970d0f9-0f10-11df-acc1-9bd6198bd0ab
unique-uuid=91d11477-1009-11df-80a0-9bd6198bd0ab
slave
label=
prune-min=00:00:00
operating as a SLAVE
snapshots directory defaults to /var/hammer/pfs
}
If you want to wipe it out, just do this:
# ln -s @@0x00010a543830:9 /todestroy
# hammer pfs-destroy /todestroy
Probably there are better ways, but well, I hope this may help you :-)
Cheers,
Antonio Huete
2010/4/11 Steve O'Hara-Smith st...@sohara.org:
Hi Antonio,
There is no /pfs dir - the two slaves were created by hammer
mirror-copy and live in fs/backup/ which looks like this:
ls -l /data/backup/
total 0
lrwxr-xr-x 1 root wheel 10 Dec 12 06:45 df1.marelmo.com-home -
@@0x000878898420:2
lrwxr-xr-x 1 root wheel 10 Feb 4 13:12
steve.marelmo.com-home - @@0x00010af0e2e0:4
On Sun, 11 Apr 2010 10:40:12 +0200
Antonio Huete Jimenez ahuete.de...@gmail.com wrote:
Hi Steve,
What is it listed in /pfs dir?
Cheers,
Antonio Huete
2010/4/11 Steve O'Hara-Smith st...@sohara.org:
Hi,
I have a ~1TB hammer filesystem with two slave PFSs on it that
seems to be using more space than I can account for. I was looking into
it when I noticed this in hammer info
PFS ID Mode Snaps Mounted on
0 MASTER 3 /data
1 SLAVE 3 not mounted
2 SLAVE 3 not mounted
4 SLAVE 3 not mounted
Three slave PFSs listed - but there are only two (unless I'm
going crazy). How can I find out which ones are the two I know about
and how can I get rid of the extra one ?
Would I be best to simply rebuild the filesystem and start
again ? This filesystem started life as a version 1 and has been
upgraded to version 4 over time so it's seen quite a few versions of
DFly since it was first built.
--
Steve O'Hara-Smith | Directable Mirror Arrays
C:WIN | A better way to focus the
sun The computer obeys and wins. | licences available
see You lose and Bill collects. |
http://www.sohara.org/
--
Steve O'Hara-Smith | Directable Mirror Arrays
C:WIN | A better way to focus the sun
The computer obeys and wins. | licences available see
You lose and Bill collects. | http://www.sohara.org/
Re: Hammer ghost slave PFS
In fact you could access any of your slave PFSs with TID -1:
# hammer pfs-status @@-1:00011
@@0x:00011 PFS #11 {
sync-beg-tid=0x0001
sync-end-tid=0x000127fbb1c0
shared-uuid=9970d0f9-0f10-11df-acc1-9bd6198bd0ab
unique-uuid=67b036ac-455a-11df-8910-73e089715096
slave
label=
prune-min=00:00:00
operating as a SLAVE
snapshots directory defaults to /var/hammer/pfs
}
So you wouldn't need the patch.
Cheers,
Antonio Huete
2010/4/11 Antonio Huete Jimenez ahuete.de...@gmail.com:
Steve,
Can you please try this patch?
diff --git a/sbin/hammer/cmd_info.c b/sbin/hammer/cmd_info.c
index 946d3c8..12e5246 100644
--- a/sbin/hammer/cmd_info.c
+++ b/sbin/hammer/cmd_info.c
@@ -160,7 +160,7 @@ show_info(char *path)
/* Pseudo-filesystem information */
fprintf(stdout, PFS information\n);
- fprintf(stdout, \tPFS ID Mode Snaps Mounted on\n);
+ fprintf(stdout, \tPFS ID Mode Snaps End TID
Mounted on\n);
while(pfs_id HAMMER_MAX_PFS) {
bzero(pfs, sizeof(pfs));
@@ -181,12 +181,15 @@ show_info(char *path)
sc = count_snapshots(fd, info.version,
pfs_od.snapshots,
mountedon);
- fprintf(stdout, \t%6d %-6s %6d ,
- pfs_id, (ismaster ? MASTER : SLAVE), sc);
+ fprintf(stdout, \t%6d %-6s %6d 0x%016jx ,
+ pfs_id, (ismaster ? MASTER : SLAVE), sc,
+ pfs.ondisk-sync_end_tid);
+
if (mountedon)
fprintf(stdout, %s, mountedon);
else
fprintf(stdout, not mounted);
+
fprintf(stdout, \n);
}
pfs_id++;
--
This will show the End TID of all PFSs, including your slaves:
9 SLAVE 50 0x00010a543830 not mounted
10 SLAVE 50 0x0001 not mounted
So you could see the status of the PFS slave 9 with this:
# hammer pfs-status /@@0x00010a543830:9
/@@0x00010a543830:9 PFS #9 {
sync-beg-tid=0x0001
sync-end-tid=0x00010a543830
shared-uuid=9970d0f9-0f10-11df-acc1-9bd6198bd0ab
unique-uuid=91d11477-1009-11df-80a0-9bd6198bd0ab
slave
label=
prune-min=00:00:00
operating as a SLAVE
snapshots directory defaults to /var/hammer/pfs
}
If you want to wipe it out, just do this:
# ln -s @@0x00010a543830:9 /todestroy
# hammer pfs-destroy /todestroy
Probably there are better ways, but well, I hope this may help you :-)
Cheers,
Antonio Huete
2010/4/11 Steve O'Hara-Smith st...@sohara.org:
Hi Antonio,
There is no /pfs dir - the two slaves were created by hammer
mirror-copy and live in fs/backup/ which looks like this:
ls -l /data/backup/
total 0
lrwxr-xr-x 1 root wheel 10 Dec 12 06:45 df1.marelmo.com-home -
@@0x000878898420:2
lrwxr-xr-x 1 root wheel 10 Feb 4 13:12
steve.marelmo.com-home - @@0x00010af0e2e0:4
On Sun, 11 Apr 2010 10:40:12 +0200
Antonio Huete Jimenez ahuete.de...@gmail.com wrote:
Hi Steve,
What is it listed in /pfs dir?
Cheers,
Antonio Huete
2010/4/11 Steve O'Hara-Smith st...@sohara.org:
Hi,
I have a ~1TB hammer filesystem with two slave PFSs on it that
seems to be using more space than I can account for. I was looking into
it when I noticed this in hammer info
PFS ID Mode Snaps Mounted on
0 MASTER 3 /data
1 SLAVE 3 not mounted
2 SLAVE 3 not mounted
4 SLAVE 3 not mounted
Three slave PFSs listed - but there are only two (unless I'm
going crazy). How can I find out which ones are the two I know about
and how can I get rid of the extra one ?
Would I be best to simply rebuild the filesystem and start
again ? This filesystem started life as a version 1 and has been
upgraded to version 4 over time so it's seen quite a few versions of
DFly since it was first built.
--
Steve O'Hara-Smith | Directable Mirror Arrays
C:WIN | A better way to focus the
sun The computer obeys and wins. | licences available
see You lose and Bill collects. |
http://www.sohara.org/
--
Steve O'Hara-Smith | Directable Mirror Arrays
C:WIN | A better way to focus the sun
The computer obeys and wins. | licences available see
You lose and Bill collects. | http://www.sohara.org/
Re: Hammer ghost slave PFS
On Sun, 11 Apr 2010 13:12:32 +0200 Antonio Huete Jimenez ahuete.de...@gmail.com wrote: In fact you could access any of your slave PFSs with TID -1: ... If you want to wipe it out, just do this: # ln -s @@0x00010a543830:9 /todestroy # hammer pfs-destroy /todestroy Probably there are better ways, but well, I hope this may help you :-) Wonderful that pinned it down and got rid of it. Thank you. -- Steve O'Hara-Smith | Directable Mirror Arrays C:WIN | A better way to focus the sun The computer obeys and wins.|licences available see You lose and Bill collects. |http://www.sohara.org/
