Re: tunefs -p doesn't work for read-write mounts
On Fri, Mar 03, 2000 at 11:23:33AM +0200, Sheldon Hearn wrote: Shouldn't I be able to show the current tuneables for a given filesystem? # tunefs -p /usr tunefs: cannot work on read-write mounted file system Tunefs seems to have had trouble with being given filesystem names for a bit. Giving the device name works in 3.4, but not in 4.0. David. 4.0-CURRENT: 10:04:gonzo 3# df /usr Filesystem 1024-blocks UsedAvail Capacity Mounted on /dev/ad1s1f 858367 783550 614899%/usr 10:04:gonzo 4# tunefs -p /usr tunefs: cannot work on read-write mounted file system 10:04:gonzo 5# tunefs -p /dev/ad1s1f tunefs: cannot open /dev/ad1s1f: Device busy 10:04:gonzo 6# tunefs -p /dev/rad1s1f tunefs: cannot open /dev/rad1s1f: Device busy 3.4-STABLE: 10:05:walton 1# df /usr Filesystem 1024-blocks UsedAvail Capacity Mounted on /dev/da0s1f 762223 6732362801096%/usr 10:05:walton 2# tunefs -p /usr tunefs: cannot work on read-write mounted file system 10:05:walton 3# tunefs -p /dev/rda0s1f tunefs: soft updates: (-n)disabled tunefs: maximum contiguous block count: (-a) 15 tunefs: rotational delay between contiguous blocks: (-d) 0 ms tunefs: maximum blocks per file in a cylinder group: (-e) 2048 tunefs: minimum percentage of free space: (-m) 8% tunefs: optimization preference: (-o) time To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: tunefs -p doesn't work for read-write mounts
I just send-pr'ed a patch for this: misc/17143 David Malone wrote: On Fri, Mar 03, 2000 at 11:23:33AM +0200, Sheldon Hearn wrote: Shouldn't I be able to show the current tuneables for a given filesystem? # tunefs -p /usr tunefs: cannot work on read-write mounted file system Tunefs seems to have had trouble with being given filesystem names for a bit. Giving the device name works in 3.4, but not in 4.0. David. 4.0-CURRENT: 10:04:gonzo 3# df /usr Filesystem 1024-blocks UsedAvail Capacity Mounted on /dev/ad1s1f 858367 783550 614899%/usr 10:04:gonzo 4# tunefs -p /usr tunefs: cannot work on read-write mounted file system 10:04:gonzo 5# tunefs -p /dev/ad1s1f tunefs: cannot open /dev/ad1s1f: Device busy 10:04:gonzo 6# tunefs -p /dev/rad1s1f tunefs: cannot open /dev/rad1s1f: Device busy 3.4-STABLE: 10:05:walton 1# df /usr Filesystem 1024-blocks UsedAvail Capacity Mounted on /dev/da0s1f 762223 6732362801096%/usr 10:05:walton 2# tunefs -p /usr tunefs: cannot work on read-write mounted file system 10:05:walton 3# tunefs -p /dev/rda0s1f tunefs: soft updates: (-n)disabled tunefs: maximum contiguous block count: (-a) 15 tunefs: rotational delay between contiguous blocks: (-d) 0 ms tunefs: maximum blocks per file in a cylinder group: (-e) 2048 tunefs: minimum percentage of free space: (-m) 8% tunefs: optimization preference: (-o) time To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: tunefs -p doesn't work for read-write mounts
Sheldon Hearn wrote: Hi folks, Shouldn't I be able to show the current tuneables for a given filesystem? # tunefs -p /usr tunefs: cannot work on read-write mounted file system This is on a recent CURRENT. AFAIK, you always need to do this with unmounted file systems. Unless of course this was fixed in current? To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: tunefs -p doesn't work for read-write mounts
At 03:14 AM 3/3/00 -0800, Devin Butterfield wrote: Sheldon Hearn wrote: Hi folks, Shouldn't I be able to show the current tuneables for a given filesystem? # tunefs -p /usr tunefs: cannot work on read-write mounted file system This is on a recent CURRENT. AFAIK, you always need to do this with unmounted file systems. Unless of course this was fixed in current? Why so to only view the values? Jeff Mountin - [EMAIL PROTECTED] Systems/Network Administrator FreeBSD - the power to serve To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: tunefs -p doesn't work for read-write mounts
Hi folks,
Shouldn't I be able to show the current tuneables for a given filesystem?
# tunefs -p /usr
tunefs: cannot work on read-write mounted file system
This is on a recent CURRENT.
Ciao,
Sheldon.
You were supposed to use a raw device for a mounted fs, but that no longer
works after the elimination of block device. I have a quick fix for this
problem: open the device read-only to read the superblock and later re-open
it read-write before writing back.
-lq
Index: tunefs.c
===
RCS file: /home/ncvs/src/sbin/tunefs/tunefs.c,v
retrieving revision 1.11
diff -u -r1.11 tunefs.c
--- tunefs.c2000/01/30 05:24:55 1.11
+++ tunefs.c2000/03/03 16:04:04
@@ -75,9 +75,10 @@
int fi;
long dev_bsize = 1;
-void bwrite(daddr_t, char *, int);
-int bread(daddr_t, char *, int);
-void getsb(struct fs *, char *);
+void bwrite __P((daddr_t, char *, int));
+int bread __P((daddr_t, char *, int));
+void getsb __P((struct fs *, char *));
+void putsb __P((struct fs *, char *, int));
void usage __P((void));
void printfs __P((void));
@@ -103,9 +104,6 @@
if (fs) {
if (statfs(special, stfs) == 0
strcmp(special, stfs.f_mntonname) == 0) {
- if ((stfs.f_flags MNT_RDONLY) == 0) {
- errx(1, "cannot work on read-write mounted file
system");
- }
active = 1;
}
special = fs-fs_spec;
@@ -251,12 +249,7 @@
}
if (argc != 1)
usage();
- bwrite((daddr_t)SBOFF / dev_bsize, (char *)sblock, SBSIZE);
- if (Aflag)
- for (i = 0; i sblock.fs_ncg; i++)
- bwrite(fsbtodb(sblock, cgsblock(sblock, i)),
- (char *)sblock, SBSIZE);
- close(fi);
+ putsb(sblock, special, Aflag);
if (active) {
bzero(args, sizeof(args));
if (mount("ufs", fs-fs_file,
@@ -283,7 +276,7 @@
char *file;
{
- fi = open(file, 2);
+ fi = open(file, 0);
if (fi 0)
err(3, "cannot open %s", file);
if (bread((daddr_t)SBOFF, (char *)fs, SBSIZE))
@@ -291,6 +284,30 @@
if (fs-fs_magic != FS_MAGIC)
err(5, "%s: bad magic number", file);
dev_bsize = fs-fs_fsize / fsbtodb(fs, 1);
+}
+
+void
+putsb(fs, file, all)
+ register struct fs *fs;
+ char *file;
+ int all;
+{
+ int i;
+
+ /*
+* Re-open the device read-write. Use the read-only file
+* descriptor as an interlock to prevent the device from
+* being mounted while we are switching mode.
+*/
+ i = fi; fi = open(file, 2); close(i);
+ if (fi 0)
+ err(3, "cannot open %s", file);
+ bwrite((daddr_t)SBOFF / dev_bsize, (char *)fs, SBSIZE);
+ if (all)
+ for (i = 0; i fs-fs_ncg; i++)
+ bwrite(fsbtodb(fs, cgsblock(fs, i)),
+ (char *)fs, SBSIZE);
+ close(fi);
}
void
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