Once upon a time, Chris Adams <cmadams@xxxxxxxxxx> said:
> Does anyone know how to mount an LVM snapshot of a volume with an ext3
> fs? All I get is:
For anyone else trying this, it works fine with the following kernel
patch. The supporting code is all there, it just wasn't being called.
************************************************************************
diff -urN linux-2.4.20-dist/drivers/md/lvm.c linux-2.4.20/drivers/md/lvm.c
--- linux-2.4.20-dist/drivers/md/lvm.c 2003-06-19 09:42:05.000000000 -0500
+++ linux-2.4.20/drivers/md/lvm.c 2003-06-19 09:43:18.000000000 -0500
@@ -229,9 +229,6 @@
#define DEVICE_OFF(device)
#define LOCAL_END_REQUEST
-/* lvm_do_lv_create calls fsync_dev_lockfs()/unlockfs() */
-/* #define LVM_VFS_ENHANCEMENT */
-
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
@@ -2390,12 +2387,8 @@
if (lv_ptr->lv_access & LV_SNAPSHOT) {
lv_t *org = lv_ptr->lv_snapshot_org, *last;
- /* sync the original logical volume */
- fsync_dev(org->lv_dev);
-#ifdef LVM_VFS_ENHANCEMENT
/* VFS function call to sync and lock the filesystem */
fsync_dev_lockfs(org->lv_dev);
-#endif
down_write(&org->lv_lock);
org->lv_access |= LV_SNAPSHOT_ORG;
@@ -2420,11 +2413,9 @@
else
set_device_ro(lv_ptr->lv_dev, 1);
-#ifdef LVM_VFS_ENHANCEMENT
/* VFS function call to unlock the filesystem */
if (lv_ptr->lv_access & LV_SNAPSHOT)
unlockfs(lv_ptr->lv_snapshot_org->lv_dev);
-#endif
lvm_gendisk.part[MINOR(lv_ptr->lv_dev)].de =
lvm_fs_create_lv(vg_ptr, lv_ptr);
************************************************************************
--
Chris Adams <cmadams@xxxxxxxxxx>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.
