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cwfs: add rtmp flag for check command to remove temporary files after recover

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This commit is contained in:
cinap_lenrek 2013-07-18 15:04:37 +02:00
parent 8ef9f7bbee
commit 24e8c78cb2
2 changed files with 34 additions and 5 deletions
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11
sys/man/8/fs
View file

@ -277,6 +277,17 @@ Running
.B "check free"
afterward will construct a new free list that contains no
blocks outside the new, smaller file system.
.TP
.B rtmp
Removes temporary files after a recovery from worm.
After a cache ream and recover, temporary files and directories
refer to invalid data blocks producing checktag errors
on access. To get rid of these errors, the
.I rtmp
flag can be used with the
.I check
command which will truncate temporary directories
and remove temporary files.
.PP
.I Clean
prints the block numbers in

28
sys/src/cmd/cwfs/chk.c
View file

@ -81,11 +81,12 @@ enum
Cpfile = (1<<2), /* print files */
Cpdir = (1<<3), /* print directories */
Cfree = (1<<4), /* rebuild free list */
// Csetqid = (1<<5), /* resequence qids */
Csetqid = (1<<5), /* resequence qids */
Cream = (1<<6), /* clear all bad tags */
Cbad = (1<<7), /* clear all bad blocks */
Ctouch = (1<<8), /* touch old dir and indir */
Ctrim = (1<<9), /* trim fsize back to fit when checking free list */
Ctrim = (1<<9), /* trim fsize back to fit when checking free list */
Crtmp = (1<<10), /* clear temporary files (after recover) */
};
static struct {
@ -102,6 +103,7 @@ static struct {
"bad", Cbad,
"touch", Ctouch,
"trim", Ctrim,
"rtmp", Crtmp,
0,
};
@ -351,15 +353,16 @@ indirck(Extdentry *ed, Off a, int tag)
if (p1 = xtag(a, tag, ed->qpath)) {
for(i=0; i<INDPERBUF; i++) {
a = blkck(&((Off *)p1->iobuf)[i], &p1->flags);
if (a)
if (a) {
/*
* check each block named in this
* indirect(^n) block (a).
*/
if (tag == Tind1)
dmod += dirck(ed, a);
dmod += dirck(ed, a);
else
dmod += indirck(ed, a, tag-1);
}
}
putbuf(p1);
}
@ -434,6 +437,21 @@ fsck(Dentry *d)
if(edent.qpath > maxq)
maxq = edent.qpath;
/* clear temporary files (after recover) */
if((d->mode & DTMP) && (flags & Crtmp)){
for(i=0; i<NDBLOCK; i++)
d->dblock[i] = 0;
for(i=0; i<NIBLOCK; i++)
d->iblocks[i] = 0;
d->size = 0;
/* if not directory, delete file */
if((d->mode & DDIR) == 0)
memset(d, 0, sizeof(Dentry));
return 1;
}
/* check direct blocks (the common case) */
dmod = 0;
{
@ -656,7 +674,7 @@ modd(Off a, int s, Dentry *d1)
Iobuf *p;
Dentry *d;
if(!(flags & Cbad))
if(!(flags & (Cbad|Crtmp)))
return;
p = getbuf(dev, a, Brd);
d = getdir(p, s);